Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 12:15:58 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 08:15:58 2025 Received: from localhost ([127.0.0.1]:57413 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyV6T-0001vk-HF for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 08:15:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56730) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyV6R-0001gj-1i for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 08:15:56 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyV6J-0001qp-7A; Sat, 29 Mar 2025 08:15:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=xVbUbxcBQ54hrUUqq5sNwyJ07yGyCSDE+hHVWKHl1gg=; b=hFTTREnbPmZy N0WzsvnlJiupextQt+7zBH00DpuemYg86LqzfwMZZOok7jLAo+x+QMlnNYRyneF3CIrJzMfsSvaW8 GouR/MdVE7u/cGrRMCoaFgTVEpi5u1kZQ0YmYM4LgjZ5nJwhHnA9IRbOF4UaERGsglbH+dRoZa50Y eqfYtt7/0G7kAxEjYdM41WyTScoMADlpUtmqV2RVltw3OC0vRagmRY2vEMuy7GzmFriluz/Lm8KRn 8Gh7CHOfYUxgXwb7FKyjN2u6whRyZSisUoJ9anfiQHhyRlnEOklQETsdTlqsh01eWxLqvT4spatHI NyyuI+ViiWPTXIykcVOf9A==; Date: Sat, 29 Mar 2025 15:15:41 +0300 Message-Id: <86friw6niq.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87cye09ouq.fsf@HIDDEN> (message from Daniel Mendler on Sat, 29 Mar 2025 10:18:37 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> <87friwxoie.fsf@HIDDEN> <861pug9rol.fsf@HIDDEN> <87bjtkz186.fsf@HIDDEN> <86wmc88bl3.fsf@HIDDEN> <87cye09ouq.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Sat, 29 Mar 2025 10:18:37 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > >> From: Daniel Mendler <mail@HIDDEN> > >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > >> Date: Sat, 29 Mar 2025 09:32:09 +0100 > >> > >> Eli Zaretskii <eliz@HIDDEN> writes: > >> > >> >> From: Daniel Mendler <mail@HIDDEN> > >> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > >> >> Date: Sat, 29 Mar 2025 08:52:09 +0100 > >> >> > >> >> The `hl-line-highlight' moves the line highlight overlay, such that it > >> >> moves immediately with the cursor and does not lag behind. > >> > > >> > You may not be aware, but moving and changing overlays disables some > >> > redisplay optimizations, and in many cases can trigger an additional > >> > immediate redisplay cycle. So doing that after every command exits > >> > in practice means every redisplay cycle is adversely affected. > >> > >> I am aware. What do you suggest as an alternative? It would look odd if > >> the `hl-line-overlay' would not move directly with the cursor and would > >> lag behind. > > > > I could suggest one or two alternatives, but is it worth our time? is > > someone actually considering any such changes? > > Please do. I would like to understand your ideas. One idea is to use an idle timer. Another is to reimplement this in the display engine (which tracks the cursor position as part of its job). > > My point was and remains the same: adding more and more features to > > post-command-hook is something to be avoided. > > Your argument from above does not matter in the case of `cursor-type'. > Since most commands do not trigger a modification of the `cursor-type', > the only cost that gets added to the `post-command-hooks' is the > inexpensive check of a few variables or conditions, which will not > affect redisplay. > > I still do not understand why you are so strongly against a > `post-command-hook' in this case. I see that you are out of principle > against `post-command-hooks'. This makes sense given that these hooks > can be abused easily. > > However in certain scenarios, after careful consideration, they might be > acceptable. As Juri mentioned, a `post-command-hook' allows us to > reliably change the `cursor-type' based on arbitrary conditions. In > contrast, if we use multiple hooks, which are registered in multiple > different subsystems, it is easy to miss relevant state changes. I think I already said everything I could, and repetition will not help. So I will respectfully bow out of this discussion.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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([2401:4900:120e:c4da:d85a:dbff:fe3a:41b6]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af93b67e754sm2979708a12.6.2025.03.29.03.07.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 29 Mar 2025 03:07:22 -0700 (PDT) Date: Sat, 29 Mar 2025 15:37:13 +0530 From: Visuwesh <visuweshm@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' User-Agent: K-9 Mail for Android In-Reply-To: <8634ew9sgp.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87wmc8k0o6.fsf@HIDDEN> <8634ew9sgp.fsf@HIDDEN> Message-ID: <348B3268-0379-4265-BA5D-300A3E16010F@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On 29 March 2025 13:30:38 GMT+05:30, Eli Zaretskii <eliz@gnu=2Eorg> wrote: >> From: Visuwesh <visuweshm@gmail=2Ecom> >> Cc: Daniel Mendler <mail@daniel-mendler=2Ede>, 77224@debbugs=2Egnu=2Eo= rg, >> eg642616@gmail=2Ecom, juri@linkov=2Enet >> Date: Sat, 29 Mar 2025 08:23:13 +0530 >>=20 >> Global value: >>=20 >> (transient--post-command-hook repeat-post-hook) >>=20 >> I have no idea why transient--post-command-hook is in there=2E I don't >> use transient at all=2E > >Maybe you used some feature that loads transient, like emoji-insert? No, I never did=2E I essentially never use any transient based command si= nce it is far too complex for my simpleminded brain=2E
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 09:18:49 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 05:18:49 2025 Received: from localhost ([127.0.0.1]:56797 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tySL3-0004J2-3V for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 05:18:49 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:57149 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1tySKz-0004Ih-Oj for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 05:18:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Dm4OBKetEG1z6BF47WuEKpE8r/DQ8lDx1rYr7cXMf7M=; b=RD1wSA+CgwGHpxJv9yOcGxxgZN AWuAD0xReBq4d9tATEe1+0s6reD7Y7RZfv54/lznjLvrkADOMSORs/buMkqU0L27ZM1a6w5oG7tIB Y8mnv0Uua+1htNkVNejrOpwKuXoro7s7C+H0vDVony51cZzeeRygzk+T/jDJBLvlaQx4=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86wmc88bl3.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 29 Mar 2025 11:50:32 +0300") References: <87iknzxski.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> <87friwxoie.fsf@HIDDEN> <861pug9rol.fsf@HIDDEN> <87bjtkz186.fsf@HIDDEN> <86wmc88bl3.fsf@HIDDEN> Date: Sat, 29 Mar 2025 10:18:37 +0100 Message-ID: <87cye09ouq.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Sat, 29 Mar 2025 09:32:09 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> >> From: Daniel Mendler <mail@HIDDEN> >> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> >> Date: Sat, 29 Mar 2025 08:52:09 +0100 >> >> >> >> The `hl-line-highlight' moves the line highlight overlay, such that it >> >> moves immediately with the cursor and does not lag behind. >> > >> > You may not be aware, but moving and changing overlays disables some >> > redisplay optimizations, and in many cases can trigger an additional >> > immediate redisplay cycle. So doing that after every command exits >> > in practice means every redisplay cycle is adversely affected. >> >> I am aware. What do you suggest as an alternative? It would look odd if >> the `hl-line-overlay' would not move directly with the cursor and would >> lag behind. > > I could suggest one or two alternatives, but is it worth our time? is > someone actually considering any such changes? Please do. I would like to understand your ideas. > My point was and remains the same: adding more and more features to > post-command-hook is something to be avoided. Your argument from above does not matter in the case of `cursor-type'. Since most commands do not trigger a modification of the `cursor-type', the only cost that gets added to the `post-command-hooks' is the inexpensive check of a few variables or conditions, which will not affect redisplay. I still do not understand why you are so strongly against a `post-command-hook' in this case. I see that you are out of principle against `post-command-hooks'. This makes sense given that these hooks can be abused easily. However in certain scenarios, after careful consideration, they might be acceptable. As Juri mentioned, a `post-command-hook' allows us to reliably change the `cursor-type' based on arbitrary conditions. In contrast, if we use multiple hooks, which are registered in multiple different subsystems, it is easy to miss relevant state changes. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 08:51:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 04:51:26 2025 Received: from localhost ([127.0.0.1]:56752 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyRuX-0002Q1-NL for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:51:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44588) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyRuU-0002Oh-Bw for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:51:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyRuM-0002cr-1B; Sat, 29 Mar 2025 04:51:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=i3mkfwgPv3RB/5fVaqUZLKOIToltYjnF1DnZU6z1olk=; b=OpNbOa3h2vJk xsqv9FJlbU4UnYmHJPfbGumPiD4kPvfpF3/qyPMc7krAVo8mZ79AF3AkDep78pR2wKVz5NLuu0N/A XwFVHSRrBDGBXBPLkBneDMUzxB0QYZqb+ZGFvgso6JMsDbTDetuGLuq9ogXsboLsuUEoGMoIOHWoX /EB5kAvSsWtyyyBLc6AURxGwONolPolWuDjuNb4XtkvWKjVWgZRzpQFiY/dR3ELmyE2cCT8HJzKH3 VcTSiulGJ0weczloIplyYW7lGvRbqoc1XZL+Xe1IdmD6L8gbllGGTfUWbKDX0xcTYfc0zUiNG5/s4 m9rwoKhRq5euWT45iBrP9Q==; Date: Sat, 29 Mar 2025 11:50:32 +0300 Message-Id: <86wmc88bl3.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87bjtkz186.fsf@HIDDEN> (message from Daniel Mendler on Sat, 29 Mar 2025 09:32:09 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> <87friwxoie.fsf@HIDDEN> <861pug9rol.fsf@HIDDEN> <87bjtkz186.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Sat, 29 Mar 2025 09:32:09 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > >> From: Daniel Mendler <mail@HIDDEN> > >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > >> Date: Sat, 29 Mar 2025 08:52:09 +0100 > >> > >> The `hl-line-highlight' moves the line highlight overlay, such that it > >> moves immediately with the cursor and does not lag behind. > > > > You may not be aware, but moving and changing overlays disables some > > redisplay optimizations, and in many cases can trigger an additional > > immediate redisplay cycle. So doing that after every command exits > > in practice means every redisplay cycle is adversely affected. > > I am aware. What do you suggest as an alternative? It would look odd if > the `hl-line-overlay' would not move directly with the cursor and would > lag behind. I could suggest one or two alternatives, but is it worth our time? is someone actually considering any such changes? My point was and remains the same: adding more and more features to post-command-hook is something to be avoided.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 08:32:22 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 04:32:22 2025 Received: from localhost ([127.0.0.1]:56699 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyRc5-0001Kf-W9 for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:32:22 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:59979 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1tyRc2-0001KN-SJ for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:32:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=peqIGjzBAPFIEbTEdODnuE5BupgQz073mmrWKiXV61Q=; b=h5QtuwBsGkgIxUnoTWyBQ3c4RI 1aYC6ac5PTOsAYTJBeekMJ8YckF3xydG5GPIokGcbAfyjfT2tFMOXZy/lMtfRPkOPyb8/bvMnL72H ExtGwWLwTY4MJ/+1PmTAZXoZ8ZzdtrZLlUjpul6QhKfz+rGIR67ApXJjFN4Uq6qPIN1U=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <861pug9rol.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 29 Mar 2025 11:17:30 +0300") References: <87iknzxski.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> <87friwxoie.fsf@HIDDEN> <861pug9rol.fsf@HIDDEN> Date: Sat, 29 Mar 2025 09:32:09 +0100 Message-ID: <87bjtkz186.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Sat, 29 Mar 2025 08:52:09 +0100 >> >> The `hl-line-highlight' moves the line highlight overlay, such that it >> moves immediately with the cursor and does not lag behind. > > You may not be aware, but moving and changing overlays disables some > redisplay optimizations, and in many cases can trigger an additional > immediate redisplay cycle. So doing that after every command exits > in practice means every redisplay cycle is adversely affected. I am aware. What do you suggest as an alternative? It would look odd if the `hl-line-overlay' would not move directly with the cursor and would lag behind. Some specialized code could handle this overlay such that it is treated more efficiently together with the cursor itself. But in practice not much would be won given that the `hl-line-overlay' has never caused noticeable problems. Maybe it has for others and likely in files with very long lines? For files with long lines I still use `so-long-mode'. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 08:17:43 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 04:17:43 2025 Received: from localhost ([127.0.0.1]:56666 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyRNv-0000Zh-AD for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:17:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57956) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyRNs-0000ZP-22 for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:17:40 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyRNk-0007Fb-Ua; Sat, 29 Mar 2025 04:17:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=xilsB6UBOgw5uwMnmBAsldjeHXn/Radb1Vqvo3lZmB4=; b=r0Kx9kEeP8/g lrBY2CIk29MXJm6j21moAhzgIvVV9/A82D0yY/T2H5tU4AZmbYbWaj4I5AHlVp6IkewcTUt0UjDjr jQVPHo7Nbm9JEdepie2DmORbSkiEdQm0YF+5VTmLGIf0khH5feyIEqw5x7LNM1AFrLoEgZG/ZjBpI XPnn+GJouXQ1r++lTzaW7zwhwzM8cpRr6yHutWdWWztEgr1H1ERrGy9BwjVGdVYj9JdfPtucRS4/+ pQYYiAPqjKXTB++H6Stqo1kcvN/JBRP+vZbSBN5MHLB7W/F9o92syKc08oZ31GU6AxenewTL/dpTn pxnNTcZI7AZu/iS73YCw/Q==; Date: Sat, 29 Mar 2025 11:17:30 +0300 Message-Id: <861pug9rol.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87friwxoie.fsf@HIDDEN> (message from Daniel Mendler on Sat, 29 Mar 2025 08:52:09 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> <87friwxoie.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Sat, 29 Mar 2025 08:52:09 +0100 > > The `hl-line-highlight' moves the line highlight overlay, such that it > moves immediately with the cursor and does not lag behind. You may not be aware, but moving and changing overlays disables some redisplay optimizations, and in many cases can trigger an additional immediate redisplay cycle. So doing that after every command exits in practice means every redisplay cycle is adversely affected. > The only seemingly problematic hook is `whitespace-post-command'. I > haven't checked it in detail. It looks complex but it mostly seems to > modify some overlays and trigger fontification. Potentially some of the > work there could be deferred.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 08:00:55 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 04:00:55 2025 Received: from localhost ([127.0.0.1]:56629 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyR7e-0008DH-Os for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:00:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53456) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyR7c-0008D1-4p for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 04:00:53 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyR7T-0005G7-74; Sat, 29 Mar 2025 04:00:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=1y4cWuyV0JU6Q8QGNOKCgJtBeHjFJxnmLHMSaFASYlA=; b=Mn86QPCWh8qS xJ2blavh7z12+PSV8wkjJ1Jzw9E6LTi3wEWbzcxlBH/B2VVZ0YFFx7MQB8cCvmGdWu0y2HA71b4Hh oi+Fbx0IltPpiADzyCetnNLbUrNa5LknZRwKTaD8B5Qf8jBc2+6sAkG9dM0IJKnAG0I1l4g+kniTS rI/twDQwQ3ZyigIerHBem+4aB8PcOFwseC1EZkUrJhYN2a3ZClROvEz1VBRoBlyJKsk5+/9s6LbGM eQVsLcP0qTcnLuOP5xv9eBq83GCzSlh2KrsZ8ID/AFHoyFAsmIsxyonAdbLhIsPbfXTxsPWdWlmXP verzAO2BquPsB7h8D97Fkg==; Date: Sat, 29 Mar 2025 11:00:38 +0300 Message-Id: <8634ew9sgp.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Visuwesh <visuweshm@HIDDEN> In-Reply-To: <87wmc8k0o6.fsf@HIDDEN> (message from Visuwesh on Sat, 29 Mar 2025 08:23:13 +0530) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87wmc8k0o6.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Visuwesh <visuweshm@HIDDEN> > Cc: Daniel Mendler <mail@HIDDEN>, 77224 <at> debbugs.gnu.org, > eg642616@HIDDEN, juri@HIDDEN > Date: Sat, 29 Mar 2025 08:23:13 +0530 > > Global value: > > (transient--post-command-hook repeat-post-hook) > > I have no idea why transient--post-command-hook is in there. I don't > use transient at all. Maybe you used some feature that loads transient, like emoji-insert?
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 07:52:34 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 03:52:34 2025 Received: from localhost ([127.0.0.1]:56613 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyQza-0007li-4g for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:52:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35362) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyQzP-0007l7-K8 for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:52:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyQzI-0004P3-7V; Sat, 29 Mar 2025 03:52:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=XMOW9yHaApX3S5FlZ2lyXSj5UL/d+zRK8Ww8KVdQvZs=; b=e4XWu9dfhvHv iDypZz9HOIRt3p6xyRAXHrP/3AbGgI7yc9EGa3i+hrRxxdKkIZa7FpKChhL3d0kioCl3jeLDwWqEF 8H6AAYcyYtDP1NZCuA/YKOfHvKsjUHXxlzc/05/6fAp9wnFg4CRcxUfyotCJ7/4ojGfrII90peDir cl5a16LC/4H3TeFu+UYSsQCTf53kz0SJxXX0tpS45De6ncSjIMOSQIq9EPqfRZb4j1SIuaiUBBntJ JulHTM/V6NV8raTwDwYvDoIU1cD5r/p54ktNGBOnrcBqUQTxvQiIoug6QXvowlziJSY9X7K3bxiA7 614XVDDxRd8f4tuHIh2Jrw==; Date: Sat, 29 Mar 2025 10:52:12 +0300 Message-Id: <865xjs9sur.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Colascione <dancol@HIDDEN> In-Reply-To: <B9B7761F-BEB5-423E-A44E-D63E466924F9@HIDDEN> (message from Daniel Colascione on Fri, 28 Mar 2025 21:03:10 -0400) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> <868qopbp40.fsf@HIDDEN> <m1o6xlfcvu.fsf@HIDDEN> <877c48654r.fsf@HIDDEN> <B9B7761F-BEB5-423E-A44E-D63E466924F9@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Date: Fri, 28 Mar 2025 21:03:10 -0400 > From: Daniel Colascione <dancol@HIDDEN> > CC: Eli Zaretskii <eliz@HIDDEN>, mail@HIDDEN, juri@HIDDEN, > 77224 <at> debbugs.gnu.org > > >Can your proposal also handle whether user moves cursor? > > > >Another reason why post-command-hook is used is mostly for run code > >when user moves cursor position. > > I don't see why not? You could put (point) on your change list or something. I'm imagining that we just recognize forms in this list specially and add the appropriate low level hooks internally. > > >post-command-hook would run code even if user/cursor is idle and even > >for every /(unrelated)/ function in background, which can lead to high > >resource consumption. > > Yeah. Tragedy of the commons. Too many sheep grazing on the communal Emacs event loop. Yes, for this kind of feature to work in Emacs, there should be some mechanism that would scan all the important changes (whose name is a legion), and signal the relevant changes to potential clients. That sounds like one giant end probably quite expensive post-command-hook, doesn't it?
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 07:52:21 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 03:52:21 2025 Received: from localhost ([127.0.0.1]:56609 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyQzM-0007lA-HX for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:52:21 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:34567 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1tyQzI-0007kr-3p for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:52:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=eRsl79X+ot/gZ+E2idrTtwff1NsMi6Bi6TIzenV7W7A=; b=RdQTEWNCs7NSaRYb0PoNpfNKr1 cSTMfY4k8JJDRx+aTH9qLRMKHlprnzikgje3w9oOyp+urj4S2cOA2GqAdddeF9Lr6pKr1CxUSxd9R oOnBV3rdvYHaZpGivC8ZXnGklETf7vEGGFETIdLxLRjRlN0mi+Wc0nh3OC6HTka0hhks=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86ecyg9v51.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 29 Mar 2025 10:02:50 +0300") References: <87iknzxski.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> <86ecyg9v51.fsf@HIDDEN> Date: Sat, 29 Mar 2025 08:52:09 +0100 Message-ID: <87friwxoie.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Fri, 28 Mar 2025 17:49:44 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> >> From: Daniel Mendler <mail@HIDDEN> >> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> >> Date: Fri, 28 Mar 2025 16:40:29 +0100 >> >> >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> >> >> My `post-command-hook' list looks like this: >> >> >> >> Buffer-local: >> >> (jit-lock--antiblink-post-command eldoc-schedule-timer >> >> corfu--auto-post-command jinx--reschedule >> >> whitespace-post-command-hook hl-line-highlight t) >> > >> > And in Org buffers? >> >> The first list was from the *scratch* buffer. This one is from an Org >> buffer: >> >> (eldoc-schedule-timer corfu--auto-post-command jinx--reschedule >> whitespace-post-command-hook hl-line-highlight t) > > That's already problematic, IMO. And then some people might enable > flyspell-mode on top of all that. In my experience, there is no problem, neither in Org nor in Elisp buffers. I wrote in my other mail: >> I don't have any problems with these hooks, since they are either >> cheap or only schedule some timers for more expensive operations. At >> least I don't notice any sluggishness and the PCHs don't appear in >> profiles. Enabling Flyspell on top is not a realistic scenario since `jinx--reschedule' comes from the Jinx spell checker, which is an alternative to Flyspell. The spell checking takes place later when Emacs is idle. The functions `jinx--reschedule', `eldoc-schedule-timer' and `corfu--auto-post-command' only schedule timers. The `hl-line-highlight' moves the line highlight overlay, such that it moves immediately with the cursor and does not lag behind. This is a similar scenario to changing the `cursor-type', where the cursor type should immediately reflect the editing state. Yes, we will check the cursor conditions too often, and often unnecessarily, but this does not cause slowdown as long as the check is sufficiently fast in comparison to the executed command. The only seemingly problematic hook is `whitespace-post-command'. I haven't checked it in detail. It looks complex but it mostly seems to modify some overlays and trigger fontification. Potentially some of the work there could be deferred. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 07:03:05 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Mar 29 03:03:05 2025 Received: from localhost ([127.0.0.1]:56500 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyQDh-0005JK-02 for submit <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:03:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44064) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyQDd-0005Ih-AW for 77224 <at> debbugs.gnu.org; Sat, 29 Mar 2025 03:03:02 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyQDW-0006QX-4A; Sat, 29 Mar 2025 03:02:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=zr4yMEVjVV8O/KWGNbF26f55qPyoL9cS56PevA2+Ty4=; b=Dm6pqc7IWZwk JrbCAu37fll6SsrDwj0FLyEoXOUtASZ+H8u2I0pGOXZcBGOh19BNAjSR9l6ybzx6+PWGS5Go2tzqN 5bmJiXTSCu6ZlXD4Tyql6FS/tdlhrPDuqqedPDrXIDd7fjpOuS5VmdL/dgmvyJdxtdqw2u3C+lNfc cdquM8IX2Ys2nj9PUDFUSrSZKBLu+UlGqZ1iLGWLO+FGWd7Pwi7JXksSBcAU9SoLnboqMqdMJ2dG/ dxOS2JdG5gxFKR55uAOvpbyYgzhvK6ugMVaRkKQNBEVvIFtGr+FOJSvlSRSl6KM7L+vIuKeBl/43i 4/MMIICBM7JHWwoQDouljA==; Date: Sat, 29 Mar 2025 10:02:50 +0300 Message-Id: <86ecyg9v51.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87frixaymv.fsf@HIDDEN> (message from Daniel Mendler on Fri, 28 Mar 2025 17:49:44 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> <87frixaymv.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Fri, 28 Mar 2025 17:49:44 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > >> From: Daniel Mendler <mail@HIDDEN> > >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > >> Date: Fri, 28 Mar 2025 16:40:29 +0100 > >> > >> Eli Zaretskii <eliz@HIDDEN> writes: > >> > >> My `post-command-hook' list looks like this: > >> > >> Buffer-local: > >> (jit-lock--antiblink-post-command eldoc-schedule-timer > >> corfu--auto-post-command jinx--reschedule > >> whitespace-post-command-hook hl-line-highlight t) > > > > And in Org buffers? > > The first list was from the *scratch* buffer. This one is from an Org > buffer: > > (eldoc-schedule-timer corfu--auto-post-command jinx--reschedule > whitespace-post-command-hook hl-line-highlight t) That's already problematic, IMO. And then some people might enable flyspell-mode on top of all that.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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Fri, 28 Mar 2025 19:53:17 -0700 (PDT) From: Visuwesh <visuweshm@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86bjtlbqge.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> Date: Sat, 29 Mar 2025 08:23:13 +0530 Message-ID: <87wmc8k0o6.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: Daniel Mendler <mail@HIDDEN>, eg642616@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) [=E0=AE=B5=E0=AF=86=E0=AE=B3=E0=AF=8D=E0=AE=B3=E0=AE=BF =E0=AE=AE=E0=AE=BE= =E0=AE=B0=E0=AF=8D=E0=AE=9A=E0=AF=8D 28, 2025] Eli Zaretskii wrote: > How long is the post-command-hook list in your production sessions? > Should we poll users to give their data? Just yesterday someone > complained on Reddit that Emacs is too slow, and I have no doubt that > features that use post-command-hook are at least part of the reason if > not _the_ reason. CAVEAT: I am aware of the ill effects of having too many things in post-command-hook and generally avoid it unless strictly necessary. In the message-mode buffer I'm writing this from: (t flyspell-post-command-hook) In Org mode: (prettify-symbols--post-command-hook t) In f90-mode: (jit-lock--antiblink-post-command eldoc-schedule-timer t) In elisp-mode: (jit-lock--antiblink-post-command eldoc-schedule-timer reveal-post-command t) Global value: (transient--post-command-hook repeat-post-hook) I have no idea why transient--post-command-hook is in there. I don't use transient at all.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 29 Mar 2025 01:03:29 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 21:03:28 2025 Received: from localhost ([127.0.0.1]:56026 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyKbg-0005Kk-K8 for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 21:03:28 -0400 Received: from dancol.org ([2600:3c01:e000:3d8::1]:50492) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <dancol@HIDDEN>) id 1tyKbd-0005KZ-HL for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 21:03:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=dancol.org; s=x; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID: References:In-Reply-To:Subject:CC:To:From:Date:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; 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charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On March 28, 2025 8:40:36 PM EDT, "Elijah Gabe P=C3=A9rez" <eg642616@gmail= =2Ecom> wrote: >Daniel Colascione <dancol@dancol=2Eorg> writes: > >> The feature I'm proposing is higher-level than that=2E For example, fo= r >> my personal use, I have something that sits in pre-redisplay-function >> and scans all the windows for applying highlights based on current >> buffer and window selection=2E I should have written this thing using = the >> appropriate window configuration change hooks, but didn't, because I'm >> lazy and my approach is fast enough for me=2E > >> ;; Don't do this=2E > >> (defun window-highlight--pre-redisplay (_window) >> (window-highlight--rescan-windows)) > >> (add-function :after pre-redisplay-function >> #'window-highlight--pre-redisplay)) > >> What I'd have wanted instead is something like this: > >> (run-when-changed >> (list (selected-window) (selected-frame) (frame-focus-state)) >> #'window-highlight--rescan-windows) > >> Here, we'd run window-highlight--rescan-windows only when one of its >> dependent conditions (e=2Eg=2E selected frame) changed=2E After any nu= mber of >> window and frame changes, we'd run window-highlight--rescan-windows >> *once*, immediately before its effects would become user-visible >> (e=2Eg=2E just before redisplay, or after commands), and we wouldn't re= -run >> it until one of its preconditions changed=2E > >Can your proposal also handle whether user moves cursor? > >Another reason why post-command-hook is used is mostly for run code >when user moves cursor position=2E I don't see why not? You could put (point) on your change list or somethin= g=2E I'm imagining that we just recognize forms in this list specially and = add the appropriate low level hooks internally=2E >post-command-hook would run code even if user/cursor is idle and even >for every /(unrelated)/ function in background, which can lead to high >resource consumption=2E Yeah=2E Tragedy of the commons=2E Too many sheep grazing on the communal E= macs event loop=2E > >I think having alternatives like this for specific commands (or actions) >could help reduce the use of post-command-hook=2E >
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Daniel Colascione <dancol@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <m1o6xlfcvu.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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<868qopbp40.fsf@HIDDEN> <m1o6xlfcvu.fsf@HIDDEN>
Date: Fri, 28 Mar 2025 18:40:36 -0600
Message-ID: <877c48654r.fsf@HIDDEN>
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Daniel Colascione <dancol@HIDDEN> writes:
> The feature I'm proposing is higher-level than that. For example, for
> my personal use, I have something that sits in pre-redisplay-function
> and scans all the windows for applying highlights based on current
> buffer and window selection. I should have written this thing using the
> appropriate window configuration change hooks, but didn't, because I'm
> lazy and my approach is fast enough for me.
> ;; Don't do this.
> (defun window-highlight--pre-redisplay (_window)
> (window-highlight--rescan-windows))
> (add-function :after pre-redisplay-function
> #'window-highlight--pre-redisplay))
> What I'd have wanted instead is something like this:
> (run-when-changed
> (list (selected-window) (selected-frame) (frame-focus-state))
> #'window-highlight--rescan-windows)
> Here, we'd run window-highlight--rescan-windows only when one of its
> dependent conditions (e.g. selected frame) changed. After any number of
> window and frame changes, we'd run window-highlight--rescan-windows
> *once*, immediately before its effects would become user-visible
> (e.g. just before redisplay, or after commands), and we wouldn't re-run
> it until one of its preconditions changed.
Can your proposal also handle whether user moves cursor?
Another reason why post-command-hook is used is mostly for run code
when user moves cursor position.
post-command-hook would run code even if user/cursor is idle and even
for every /(unrelated)/ function in background, which can lead to high
resource consumption.
I think having alternatives like this for specific commands (or actions)
could help reduce the use of post-command-hook.
--==-=-=
Content-Type: text/html
<p>
Daniel Colascione <dancol@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>The feature I'm proposing is higher-level than that. For example, for<br />
my personal use, I have something that sits in pre-redisplay-function<br />
and scans all the windows for applying highlights based on current<br />
buffer and window selection. I should have written this thing using the<br />
appropriate window configuration change hooks, but didn't, because I'm<br />
lazy and my approach is fast enough for me.<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>;; Don't do this.<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>(defun window-highlight–pre-redisplay (<sub>window</sub>)<br />
(window-highlight–rescan-windows))<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>(add-function :after pre-redisplay-function<br />
#'window-highlight–pre-redisplay))<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>What I'd have wanted instead is something like this:<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>(run-when-changed<br />
(list (selected-window) (selected-frame) (frame-focus-state))<br />
#'window-highlight–rescan-windows)<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Here, we'd run window-highlight–rescan-windows only when one of its<br />
dependent conditions (e.g. selected frame) changed. After any number of<br />
window and frame changes, we'd run window-highlight–rescan-windows<br />
<b>once</b>, immediately before its effects would become user-visible<br />
(e.g. just before redisplay, or after commands), and we wouldn't re-run<br />
it until one of its preconditions changed.<br />
</div></blockquote>
</p>
<p>
Can your proposal also handle whether user moves cursor?<br />
</p>
<p>
Another reason why post-command-hook is used is mostly for run code<br />
when user moves cursor position.<br />
</p>
<p>
post-command-hook would run code even if user/cursor is idle and even<br />
for every <i>(unrelated)</i> function in background, which can lead to high<br />
resource consumption.<br />
</p>
<p>
I think having alternatives like this for specific commands (or actions)<br />
could help reduce the use of post-command-hook.<br />
</p>
--==-=-=--
--=-=-=
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[76.76.25.7]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7c5f7764e8dsm164701385a.88.2025.03.28.14.13.09 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 28 Mar 2025 14:13:10 -0700 (PDT) From: JD Smith <jdtsmith@HIDDEN> Message-Id: <DF5A4B15-24CD-4748-B422-16B14081C076@HIDDEN> Content-Type: multipart/alternative; boundary="Apple-Mail=_5AD74124-9F29-40F5-9C93-E462796AB6EF" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.400.131.1.6\)) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' Date: Fri, 28 Mar 2025 17:12:59 -0400 In-Reply-To: <87msd5r4z8.fsf@HIDDEN> To: Juri Linkov <juri@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> <87a595tyzt.fsf@HIDDEN> <87msd5r4z8.fsf@HIDDEN> X-Mailer: Apple Mail (2.3826.400.131.1.6) X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>, Daniel Colascione <dancol@HIDDEN>, Eli Zaretskii <eliz@HIDDEN>, mail@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --Apple-Mail=_5AD74124-9F29-40F5-9C93-E462796AB6EF Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Mar 28, 2025, at 3:30=E2=80=AFAM, Juri Linkov <juri@HIDDEN> = wrote: >=20 > Please note that this is insufficient for 'repeat-mode'. > Currently it requires adding an advice to update the cursor > on the repeat timer events: I solved this problem by wrapping the `repeat-echo-function' and = `after-focus-change-function'. https://gist.github.com/jdtsmith/a169362879388bc1bdf2bbb977782d4f=EF=BF=BC= Emacs: change cursor color during active repeat-mode commands gist.github.com= --Apple-Mail=_5AD74124-9F29-40F5-9C93-E462796AB6EF Content-Type: multipart/related; type="text/html"; boundary="Apple-Mail=_95FE29A4-2B04-4591-9268-BE4AE14C8FA0" --Apple-Mail=_95FE29A4-2B04-4591-9268-BE4AE14C8FA0 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"content-type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;"><br = id=3D"lineBreakAtBeginningOfMessage"><div><br><blockquote = type=3D"cite"><div>On Mar 28, 2025, at 3:30=E2=80=AFAM, Juri Linkov = <juri@HIDDEN> wrote:</div><br = class=3D"Apple-interchange-newline"><div><span style=3D"caret-color: = rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: = normal; font-variant-caps: normal; font-weight: 400; letter-spacing: = normal; text-align: start; text-indent: 0px; text-transform: none; = white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none; float: none; display: inline !important;">Please = note that this is insufficient for 'repeat-mode'.</span><br = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; = letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none;"><span = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; = letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none; float: none; = display: inline !important;">Currently it requires adding an advice to = update the cursor</span><br style=3D"caret-color: rgb(0, 0, 0); = font-family: Helvetica; font-size: 12px; font-style: normal; = font-variant-caps: normal; font-weight: 400; letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none;"><span style=3D"caret-color: rgb(0, 0, 0); = font-family: Helvetica; font-size: 12px; font-style: normal; = font-variant-caps: normal; font-weight: 400; letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none; float: none; display: inline !important;">on the = repeat timer events:</span></div></blockquote></div><div><br></div>I = solved this problem by wrapping the `repeat-echo-function' and = `after-focus-change-function<span style=3D"caret-color: rgb(5, 12, 20); = color: rgb(5, 12, 20); font-family: ui-monospace, SFMono-Regular, = "SF Mono", Menlo, Consolas, "Liberation Mono", = monospace; white-space: pre; background-color: rgb(255, 255, = 255);">'</span>.<div><div><br><div><br></div><div><div style=3D"display: = block;"><div style=3D"-webkit-user-select: all; -webkit-user-drag: = element; display: inline-block;" class=3D"apple-rich-link" = draggable=3D"true" role=3D"link" = data-url=3D"https://gist.github.com/jdtsmith/a169362879388bc1bdf2bbb977782= d4f"><a style=3D"border-radius:10px;font-family:-apple-system, = Helvetica, Arial, = sans-serif;display:block;-webkit-user-select:none;width:300px;user-select:= none;-webkit-user-modify:read-only;user-modify:read-only;overflow:hidden;t= ext-decoration:none;" class=3D"lp-rich-link" rel=3D"nofollow" = href=3D"https://gist.github.com/jdtsmith/a169362879388bc1bdf2bbb977782d4f"= dir=3D"ltr" role=3D"button" draggable=3D"false" width=3D"300"><table = style=3D"table-layout:fixed;border-collapse:collapse;width:300px;backgroun= d-color:#30353E;font-family:-apple-system, Helvetica, Arial, = sans-serif;" class=3D"lp-rich-link-emailBaseTable" cellpadding=3D"0" = cellspacing=3D"0" border=3D"0" width=3D"300"><tbody><tr><td = vertical-align=3D"center" align=3D"center"><img = style=3D"width:300px;filter:brightness(0.97);height:150px;" width=3D"300" = height=3D"150" draggable=3D"false" class=3D"lp-rich-link-mediaImage" = alt=3D"gist-og-image-54fd7dc0713e.png" = src=3D"cid:1688FF8E-02F2-46FD-BA32-69FEE48BD037"></td></tr><tr><td = vertical-align=3D"center"><table bgcolor=3D"#30353E" cellpadding=3D"0" = cellspacing=3D"0" width=3D"300" = style=3D"table-layout:fixed;font-family:-apple-system, Helvetica, Arial, = sans-serif;background-color:rgba(48, 53, 62, = 1);-apple-color-filter:initial;" = class=3D"lp-rich-link-captionBar"><tbody><tr><td style=3D"padding:8px = 0px 8px 0px;" class=3D"lp-rich-link-captionBar-textStackItem"><div = style=3D"max-width:100%;margin:0px 16px 0px 16px;overflow:hidden;" = class=3D"lp-rich-link-captionBar-textStack"><div = style=3D"word-wrap:break-word;font-weight:500;font-size:12px;overflow:hidd= en;text-overflow:ellipsis;text-align:left;" = class=3D"lp-rich-link-captionBar-textStack-topCaption-leading"><a = rel=3D"nofollow" = href=3D"https://gist.github.com/jdtsmith/a169362879388bc1bdf2bbb977782d4f"= style=3D"text-decoration: none" draggable=3D"false"><font = color=3D"#FFFFFF" style=3D"color: rgba(255, 255, 255, 0.847059);">Emacs: = change cursor color during active repeat-mode = commands</font></a></div><div = style=3D"word-wrap:break-word;font-weight:400;font-size:11px;overflow:hidd= en;text-overflow:ellipsis;text-align:left;" = class=3D"lp-rich-link-captionBar-textStack-bottomCaption-leading"><a = rel=3D"nofollow" = href=3D"https://gist.github.com/jdtsmith/a169362879388bc1bdf2bbb977782d4f"= style=3D"text-decoration: none" draggable=3D"false"><font = color=3D"#FFFFFF" style=3D"color: rgba(255, 255, 255, = 0.54902);">gist.github.com</font></a></div></div></td></tr></tbody></table= ></td></tr></tbody></table></a></div></div></div></div></div></body></html= >= --Apple-Mail=_95FE29A4-2B04-4591-9268-BE4AE14C8FA0 Content-Transfer-Encoding: base64 Content-Disposition: inline; 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bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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Fri, 28 Mar 2025 09:58:41 -0700 (PDT) From: Karthik Chikmagalur <karthikchikmagalur@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN>, Daniel Mendler <mail@HIDDEN>, 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86bjtlbqge.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 28 Mar 2025 09:48:49 +0300") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> Date: Fri, 28 Mar 2025 09:58:39 -0700 Message-ID: <87pli1hz28.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77224 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > How long is the post-command-hook list in your production sessions? > Should we poll users to give their data? Just yesterday someone > complained on Reddit that Emacs is too slow, and I have no doubt that > features that use post-command-hook are at least part of the reason if > not _the_ reason. Here is my post-command-hook in an Org mode buffer in Emacs 29: (yas--post-command-handler org-latex-preview-auto--handle-post-cursor visible-mark-move-overlays dot-mode-loop corfu--auto-post-command t) That's the buffer-local value. In addition, the global value is: (global-font-lock-mode-check-buffers global-eldoc-mode-check-buffers global-prettify-symbols-mode-check-buffers magit-auto-revert-mode-check-buffers c-post-command repeat-post-hook mode-local-post-major-mode-change) ----- And here are the minor modes I'm using that are installing these hooks. Modes from packages I've installed explicitly: - org-latex-preview-auto-mode: Detects and previews LaTeX fragments in Org buffers as they are typed. (I authored this mode, it is designed to be as nonintrusive as possible.) - yas-minor-mode: for Yasnippets (template expansion) - visible-mark-mode: Highlights the position of the usually invisible mark. - dot-mode: Vim-style repeat operator for text insertion. - corfu-mode: Autocompletion as you type. The following modes are from built-in Emacs packages: - font-lock-mode - global-eldoc-mode - global-prettify-symbols-mode - repeat-mode Of the remaining, I use Magit with its default settings, under which it installs `magit-auto-revert-mode-check-buffers'. I don't know why `c-post-command' is in the global post-command-hook. I haven't even edited any C files in this Emacs session. I don't know why `mode-local-post-major-mode-change' is installed either. ------ Although my Emacs isn't so slow that I can't type comfortably, I can definitely perceive some difference between Emacs' responsiveness with the above settings and `emacs -q'. I would very much like some of these to be moved into different hooks that trigger only when required. Daniel's idea for something like this: (call-on-change (:buffer :window :focus) #'my-thing) would be very useful. > So I maintain that we should try to avoid post-command-hook for > operations that should happen very rarely (this case is one such case: > we only want to run this code when something is turned on or off). > Even if the reaction to the change is a bit slower, it is worth our > while to pay that price: users will be a tad happier with Emacs > response times. And if there are alternative methods of doing the > same, like the respective mode hooks in this case, we should use them > without thinking twice. Ideally, post-command-hook should only be > used for stuff that really must be done after almost every command; > for any other cases we should look for other Emacs features to do the > job. For this reason I try quite hard to avoid using post-command-hook in my packages. Karthik
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 16:49:54 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 12:49:54 2025 Received: from localhost ([127.0.0.1]:55357 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyCu2-000467-Gn for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 12:49:54 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:60087 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1tyCtz-00045s-GA for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 12:49:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=QfCGtxS40BoaHNjg/bAr7VuG0/emh7rGgoS4VgUASkY=; b=unipgFxhI3A11glY+hJed1TmE0 MgU7mc2J7cxUBiFSysgZnXIFfcROrq6OdW6tQWVM6QUSPnJLjNFDg+ZrHl7QtEaJRokSs3sj7n6JL gSv4UXoxf0iSr1aJYKaEG7WQ2P90a+CvZ+kcuWhSNGEn3ERqAsKmDUsO+4ZBpqcDxFgY=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86frix9kv0.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 28 Mar 2025 19:32:35 +0300") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> <86frix9kv0.fsf@HIDDEN> Date: Fri, 28 Mar 2025 17:49:44 +0100 Message-ID: <87frixaymv.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Fri, 28 Mar 2025 16:40:29 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> My `post-command-hook' list looks like this: >> >> Buffer-local: >> (jit-lock--antiblink-post-command eldoc-schedule-timer >> corfu--auto-post-command jinx--reschedule >> whitespace-post-command-hook hl-line-highlight t) > > And in Org buffers? The first list was from the *scratch* buffer. This one is from an Org buffer: (eldoc-schedule-timer corfu--auto-post-command jinx--reschedule whitespace-post-command-hook hl-line-highlight t) Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 16:32:48 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 12:32:48 2025 Received: from localhost ([127.0.0.1]:55333 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyCdT-0003N0-Mn for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 12:32:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55338) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tyCdR-0003Mk-H5 for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 12:32:46 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1tyCdJ-0007j0-UU; Fri, 28 Mar 2025 12:32:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=CjL2ybXZG+QdowPfIYO9CCBP50aVxlxYh/4flI6wfIc=; b=P2LhZiolUlIB An7l1JjOicE7K9FcwnSb91g/vRJgTCGGj/PB5hDKdsJmPd5IR4Fsqic1hMUQQBVhcxd7n/YP5L/ND o94hI/BLIC86Tkz444VWgkXDY+Z+Lill5nupoVUoY5uLQ5EYRoNJZzhyO0S0mAj/wRqX/w9UEqcGy lN5AFSR9d15f6Qm476I7JyJ3AMLC14udDYfUlCf4/LmO5XgCrdDHbwaqS9ueRAJhq8ar8E9iQlL7J 1HugZPy0xUp2Db7weIVEdKG9Y0DMssPuwdB9bijtNa8Ua5RftStkBvYT2zNn1GtW4EeLG4F1J/v4R zJR5Yq5163laWfq2Ink+dw==; Date: Fri, 28 Mar 2025 19:32:35 +0300 Message-Id: <86frix9kv0.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87msd5rwnm.fsf@HIDDEN> (message from Daniel Mendler on Fri, 28 Mar 2025 16:40:29 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> <87msd5rwnm.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Fri, 28 Mar 2025 16:40:29 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > My `post-command-hook' list looks like this: > > Buffer-local: > (jit-lock--antiblink-post-command eldoc-schedule-timer > corfu--auto-post-command jinx--reschedule > whitespace-post-command-hook hl-line-highlight t) And in Org buffers?
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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boundary="000000000000210a280631693292" X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN>, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --000000000000210a280631693292 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, Mar 28, 2025 at 11:41=E2=80=AFAM Daniel Mendler via Bug reports for= GNU Emacs, the Swiss army knife of text editors <bug-gnu-emacs@HIDDEN> wrote: > Eli Zaretskii <eliz@HIDDEN> writes: > > >> From: Daniel Mendler <mail@HIDDEN> > >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > >> Date: Thu, 27 Mar 2025 21:17:25 +0100 > >> > >> Here we discuss changing only the color of the cursor, a much much les= s > >> complex operation. > > > > My point is that when the list on post-command-hook is long, it takes > > Emacs time to process all the functions on the list, and the longer > > the list, the less responsive Emacs will be. These small > > insignificant delays add up. > > I see your point. But not only the length of the list but also the > weight of the specific hook functions matters. A handful of > insignificant delays add up, but will still stay insignificant. There > are not that many hooks installed in the PCH list (see my list below). > In the reports where users complain about slow Emacs, it seems more > likely that one bad hook outweighs all the others. > > > How long is the post-command-hook list in your production sessions? > > Should we poll users to give their data? Just yesterday someone > > complained on Reddit that Emacs is too slow, and I have no doubt that > > features that use post-command-hook are at least part of the reason if > > not _the_ reason. > > Indeed. PCHs are a common reason for slow down. Even worse are functions > which run during redisplay. Heavy custom mode lines seem to be the main > problem here. > > My `post-command-hook' list looks like this: > > Buffer-local: > (jit-lock--antiblink-post-command eldoc-schedule-timer > corfu--auto-post-command jinx--reschedule > whitespace-post-command-hook hl-line-highlight t) > > Global: > (ibuffer-auto-update-changed repeat-post-hook) > > I don't have any problems with these hooks, since they are either cheap > or only schedule some timers for more expensive operations. At least I > don't notice any sluggishness and the PCHs don't appear in profiles. > I have experienced issues in the past with PCH entries and cleaned it all up ages ago and try to keep an eye on it. One culprit was the pyvenv tracker which I rewrote a private copy of to use a different method that achieves the same effect with less overhead. Out of both curiosity and to butt in on this discussion, I posted this casual survey on reddit https://www.reddit.com/r/emacs/comments/1jlyek0/show_your_postcommandhook_c= ontents_to_help_emacs/ Perhaps we'll see that the bulk of people's PCH is the usual well-performing suspects. I posted mine. -Stephane --000000000000210a280631693292 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"fon= t-family:monospace"><span style=3D"font-family:Arial,Helvetica,sans-serif">= On Fri, Mar 28, 2025 at 11:41=E2=80=AFAM Daniel Mendler via Bug reports for= GNU Emacs, the Swiss army knife of text editors <<a href=3D"mailto:bug-= gnu-emacs@HIDDEN">bug-gnu-emacs@HIDDEN</a>> wrote:</span></div></div><= div class=3D"gmail_quote gmail_quote_container"><blockquote class=3D"gmail_= quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,= 204);padding-left:1ex">Eli Zaretskii <<a href=3D"mailto:eliz@HIDDEN" ta= rget=3D"_blank">eliz@HIDDEN</a>> writes:<br> <br> >> From: Daniel Mendler <<a href=3D"mailto:mail@HIDDEN"= target=3D"_blank">mail@HIDDEN</a>><br> >> Cc: <a href=3D"mailto:eg642616@HIDDEN" target=3D"_blank">eg6426= 16@HIDDEN</a>,=C2=A0 <a href=3D"mailto:77224 <at> debbugs.gnu.org" target=3D"= _blank">77224 <at> debbugs.gnu.org</a>,=C2=A0 <a href=3D"mailto:juri@HIDDEN"= target=3D"_blank">juri@HIDDEN</a><br> >> Date: Thu, 27 Mar 2025 21:17:25 +0100<br> >> <br> >> Here we discuss changing only the color of the cursor, a much much= less<br> >> complex operation.<br> ><br> > My point is that when the list on post-command-hook is long, it takes<= br> > Emacs time to process all the functions on the list, and the longer<br= > > the list, the less responsive Emacs will be.=C2=A0 These small<br> > insignificant delays add up.<br> <br> I see your point. But not only the length of the list but also the<br> weight of the specific hook functions matters. A handful of<br> insignificant delays add up, but will still stay insignificant. There<br> are not that many hooks installed in the PCH list (see my list below).<br> In the reports where users complain about slow Emacs, it seems more<br> likely that one bad hook outweighs all the others.<br> <br> > How long is the post-command-hook list in your production sessions?<br= > > Should we poll users to give their data?=C2=A0 Just yesterday someone<= br> > complained on Reddit that Emacs is too slow, and I have no doubt that<= br> > features that use post-command-hook are at least part of the reason if= <br> > not _the_ reason.<br> <br> Indeed. PCHs are a common reason for slow down. Even worse are functions<br= > which run during redisplay. Heavy custom mode lines seem to be the main<br> problem here.<br> <br> My `post-command-hook' list looks like this:<br> <br> Buffer-local:<br> (jit-lock--antiblink-post-command eldoc-schedule-timer<br> =C2=A0corfu--auto-post-command jinx--reschedule<br> =C2=A0whitespace-post-command-hook hl-line-highlight t)<br> <br> Global:<br> (ibuffer-auto-update-changed repeat-post-hook)<br> <br> I don't have any problems with these hooks, since they are either cheap= <br> or only schedule some timers for more expensive operations. At least I<br> don't notice any sluggishness and the PCHs don't appear in profiles= .<br></blockquote><div><br></div><div class=3D"gmail_default" style=3D"font= -family:monospace">I have experienced issues in the past with PCH entries a= nd cleaned it all up ages ago and try to keep an eye on it.=C2=A0 One culpr= it was the pyvenv tracker which I rewrote a private copy of to use a differ= ent method that achieves the same effect with less overhead.</div><div clas= s=3D"gmail_default" style=3D"font-family:monospace"><br></div><div class=3D= "gmail_default" style=3D"font-family:monospace">Out of both curiosity and t= o butt in on this discussion, I posted this casual survey on reddit=C2=A0<a= href=3D"https://www.reddit.com/r/emacs/comments/1jlyek0/show_your_postcomm= andhook_contents_to_help_emacs/">https://www.reddit.com/r/emacs/comments/1j= lyek0/show_your_postcommandhook_contents_to_help_emacs/</a></div><div class= =3D"gmail_default" style=3D"font-family:monospace"><br></div><div class=3D"= gmail_default" style=3D"font-family:monospace">Perhaps we'll see that t= he bulk of people's PCH is the usual well-performing suspects.=C2=A0 I = posted mine.</div><div class=3D"gmail_default" style=3D"font-family:monospa= ce"><br></div><div class=3D"gmail_default" style=3D"font-family:monospace">= -Stephane</div></div></div> --000000000000210a280631693292--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 15:40:41 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 11:40:41 2025 Received: from localhost ([127.0.0.1]:55243 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tyBp2-00015M-Lz for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 11:40:41 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:44849 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1tyBoz-000154-Co for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 11:40:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ZmIkepyiU2y96Ah/oqA2K/FyCmK11CqqYrgm7VlbmB8=; b=BiQHt8mT3YFRKlhuRmDat1GNtL FojHwQlOrzmw0X27MZQlnFMLPuVrWqPq+nAViddVwYLVRA7vRQkAIdGjFKa9HY/uAdbi3Dt3pqIol NPjnQpn5fXashfzPdVvHPA4Gu1wua/lWA1rDBCDCY2vnIyTkf3XIAJwZpFghQcbYxNRw=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86bjtlbqge.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 28 Mar 2025 09:48:49 +0300") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> Date: Fri, 28 Mar 2025 16:40:29 +0100 Message-ID: <87msd5rwnm.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Thu, 27 Mar 2025 21:17:25 +0100 >> >> Here we discuss changing only the color of the cursor, a much much less >> complex operation. > > My point is that when the list on post-command-hook is long, it takes > Emacs time to process all the functions on the list, and the longer > the list, the less responsive Emacs will be. These small > insignificant delays add up. I see your point. But not only the length of the list but also the weight of the specific hook functions matters. A handful of insignificant delays add up, but will still stay insignificant. There are not that many hooks installed in the PCH list (see my list below). In the reports where users complain about slow Emacs, it seems more likely that one bad hook outweighs all the others. > How long is the post-command-hook list in your production sessions? > Should we poll users to give their data? Just yesterday someone > complained on Reddit that Emacs is too slow, and I have no doubt that > features that use post-command-hook are at least part of the reason if > not _the_ reason. Indeed. PCHs are a common reason for slow down. Even worse are functions which run during redisplay. Heavy custom mode lines seem to be the main problem here. My `post-command-hook' list looks like this: Buffer-local: (jit-lock--antiblink-post-command eldoc-schedule-timer corfu--auto-post-command jinx--reschedule whitespace-post-command-hook hl-line-highlight t) Global: (ibuffer-auto-update-changed repeat-post-hook) I don't have any problems with these hooks, since they are either cheap or only schedule some timers for more expensive operations. At least I don't notice any sluggishness and the PCHs don't appear in profiles. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: Daniel Colascione <dancol@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <868qopbp40.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
<875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN>
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<86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN>
<86tt7ebfnc.fsf@HIDDEN>
<44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN>
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Eli Zaretskii <eliz@HIDDEN> writes:
>> Date: Thu, 27 Mar 2025 16:41:39 -0400
>> From: Daniel Colascione <dancol@HIDDEN>
>> CC: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN
>>
>> >> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an
>> >> optional mode. If it increases sluggishness unnacceptably (which it
>> >> won't), users can turn it off.
>> >
>> >Experience shows that many users turn on a lot of features which rely
>> >on post-command-hook, and then complain that Emacs is slow to respond.
>> >Telling them to turn off features they like doesn't really work.
>>
>> Nor does telling external package authors not to use post-command-hook.
>
> Well, I could at least try ;-) Who knows, some of them might even
> listen...
>
>> I think there are two worthwhile approaches: 1) time the entries in
>> post-command-hook and alert users about slow ones, and 2) provide a
>> "do something when X, Y, or Z changes" API that authors could use
>> when they would otherwise put something on PCH and check X, Y, and Z
>> internally. Internally, we could DTRT and omit running those hooks
>> when the relevant conditions haven't changed.
>
> I'd be okay with developing 1), I think it's a good feature, given the
> proliferation of features that use this hook.
Yeah. SHTDI though, and I'm not going to be able to get to it soon.
> As for 2), I think we already have that: add-variable-watcher. We
> already use this for a small number of features. Does that fit the
> bill?
No, because variable watchers are synchronous --- also, they're hacky:
they let you run arbitrary code at nearly arbitrary points.
Like advice, they're a last resort and a debugging aid, and ISTM if
we're using them to implement features, something is wrong. I think
we're conditioned to understand that named functions can be advised, but
most people aren't thinking of arbitrary variable assignments as
extension points.
The feature I'm proposing is higher-level than that. For example, for
my personal use, I have something that sits in pre-redisplay-function
and scans all the windows for applying highlights based on current
buffer and window selection. I should have written this thing using the
appropriate window configuration change hooks, but didn't, because I'm
lazy and my approach is fast enough for me.
;; Don't do this.
(defun window-highlight--pre-redisplay (_window)
(window-highlight--rescan-windows))
(add-function :after pre-redisplay-function
#'window-highlight--pre-redisplay))
What I'd have wanted instead is something like this:
(run-when-changed
(list (selected-window) (selected-frame) (frame-focus-state))
#'window-highlight--rescan-windows)
Here, we'd run window-highlight--rescan-windows only when one of its
dependent conditions (e.g. selected frame) changed. After any number of
window and frame changes, we'd run window-highlight--rescan-windows
*once*, immediately before its effects would become user-visible
(e.g. just before redisplay, or after commands), and we wouldn't re-run
it until one of its preconditions changed.
It's certainly possible to do the same coalescing and change detection
manually, but it's inconvenient. It's easier to just throw something in
pre-redisplay or post-command-hook, so that's what people do.
Level-triggered control is easier to reason about than
edge-triggered control.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 07:38:05 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 03:38:05 2025 Received: from localhost ([127.0.0.1]:52652 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ty4I1-0002bc-BX for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:38:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49888) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1ty4Hz-0002b3-9V for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:38:03 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1ty4Ht-0003Yt-Vn; Fri, 28 Mar 2025 03:37:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=O/T81Zuzv36V222FUhesTwuNGbxgNEF1lHg/ijU4CeE=; b=BCKlNKJNB13E SI/5IK9bmOHrcnaWZKDBEqjRp2iuj4nDfb+YU6f0Z51kn5BIxOfSek1+iid6Wkjg9i+LeHOLaUrYW Twkf3VhY/Eq9abVqnMSmavXrFphnUU+4EcGoan41mlrSkTC3Pn+MidNlEHoFP37hLIzAOwLFT86E0 8TrI4n6/jMR2Kylqt1D+SZZ4dm+NdVH8A+2R25QG2odeEl2D0pKBX3+agYEo+JsmoVq4pzYHvJ7m3 EqMB1TG/n8QcAhwT9vWljSeRZL5dyKQywrI2J8UlZf/WHIk8kR89jfU1aDRyEhgL4JiWPdFFjQLij 16z0ArF7aBXnHKF2F9X+Ew==; Date: Fri, 28 Mar 2025 10:37:48 +0300 Message-Id: <861puhbo6r.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Michael Heerdegen <michael_heerdegen@HIDDEN> In-Reply-To: <87ldsq7zbc.fsf@HIDDEN> (message from Michael Heerdegen on Fri, 28 Mar 2025 01:51:03 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <87ldsq7zbc.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Michael Heerdegen <michael_heerdegen@HIDDEN> > Cc: Juri Linkov <juri@HIDDEN>, 77224 <at> debbugs.gnu.org, eg642616@HIDDEN > Date: Fri, 28 Mar 2025 01:51:03 +0100 > > If we can't use other hooks, are there other alternatives? Variable > watchers have been mentioned - would using those be possible? Yes, if some change should be triggered by a variable, we can use variable watchers. IMO, it would be better than either the idle timer or post-command-hook.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: Juri Linkov <juri@HIDDEN>
To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <87a595tyzt.fsf@HIDDEN>
Organization: LINKOV.NET
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
<875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN>
<86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN>
<86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN>
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Date: Fri, 28 Mar 2025 09:30:03 +0200
Message-ID: <87msd5r4z8.fsf@HIDDEN>
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> I've updated the patch which should use the mode hook instead using
> post-command-hook or idle timers (and allows (implicitly) to user use
> post-command-hook (but that is user responsibility add it or not)).
>
> Also this should refresh the cursor while switching windows.
>
> However I've deleted the function/lambdas support as conditions because
> i found it problematic.
>
> I've test it only for overwrite-mode, I ask if anyone wants to give it a
> try.
Please note that this is insufficient for 'repeat-mode'.
Currently it requires adding an advice to update the cursor
on the repeat timer events:
(add-function :after repeat-echo-function #'cursor-indicators--update-indications)
since need to update the cursor when the timer is fired:
(run-with-idle-timer timeout nil #'repeat-exit)
(defun repeat-exit ()
(setq repeat-in-progress nil)
(funcall repeat-echo-function nil))
This problem can be solved by adding a hook:
(defun repeat-exit ()
(setq repeat-in-progress nil)
(funcall repeat-echo-function nil)
(run-hooks 'repeat-exit-hook))
Then 'cursor-indicators-mode' needs to add this hook:
(define-minor-mode cursor-indicators-mode
...
(add-hook 'repeat-exit-hook #'cursor-indicators--update-indications)
Then maybe it's possible to add more hooks for other features as well.
The drawback of this approach is that specific hooks make the cursor updating
less reliable than with using post-command-hook.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 07:32:37 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 03:32:37 2025 Received: from localhost ([127.0.0.1]:52618 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ty4Cj-0002KI-6e for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:32:37 -0400 Received: from relay1-d.mail.gandi.net ([217.70.183.193]:46043) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <juri@HIDDEN>) id 1ty4Cb-0002JY-Qt for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:32:30 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id 8B7B344351; Fri, 28 Mar 2025 07:32:21 +0000 (UTC) From: Juri Linkov <juri@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86bjtlbqge.fsf@HIDDEN> Organization: LINKOV.NET References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> <86bjtlbqge.fsf@HIDDEN> Date: Fri, 28 Mar 2025 09:25:02 +0200 Message-ID: <874izdsjop.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/31.0.50 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddujedtjedtucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjohhffffkfgggtgesthdtredttdertdenucfhrhhomheplfhurhhiucfnihhnkhhovhcuoehjuhhriheslhhinhhkohhvrdhnvghtqeenucggtffrrghtthgvrhhnpeffgeetfeevlefhleejfeeuheeiudeitdffhfdutdekfeffgffhveehteegueekheenucfkphepledurdduvdelrddutdehrdduudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledurdduvdelrddutdehrdduudejpdhhvghlohepmhgrihhlrdhgrghnughirdhnvghtpdhmrghilhhfrhhomhepjhhurhhisehlihhnkhhovhdrnhgvthdpnhgspghrtghpthhtohepgedprhgtphhtthhopeejjedvvdegseguvggssghughhsrdhgnhhurdhorhhgpdhrtghpthhtohepvghgieegvdeiudeisehgmhgrihhlrdgtohhmpdhrtghpthhtohepmhgrihhlsegurghnihgvlhdqmhgvnhgulhgvrhdruggvpdhrtghpthhtohepvghlihiisehgnhhurdhorhhg X-GND-Sasl: juri@HIDDEN X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: Daniel Mendler <mail@HIDDEN>, eg642616@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) > How long is the post-command-hook list in your production sessions? > Should we poll users to give their data? I use very many Emacs features, but my post-command-hook is just (repeat-post-hook my-change-cursor)
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 07:18:09 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 03:18:09 2025 Received: from localhost ([127.0.0.1]:52579 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ty3yi-0001Xn-K2 for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:18:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37390) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1ty3yg-0001XN-IT for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 03:18:07 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1ty3yZ-0000iP-Rn; Fri, 28 Mar 2025 03:17:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=9XKdFaS5q0O+JFHNpzuePCCGtVkPwJndkt9GcEOBSKU=; b=BnAgms6t9oyR M+OSuNecRJwrpcizkVqWqhbAAD6lT1oHGtsMS2ox/24QNpglTH4PMvYCl7FG9WED9imcLix4UH6hq 1E7eMRwCUAvZhXsd08AE+v9NcFSTuDlRXj5UdJBynR9o5sYgLztsahrxukOefzt0IsfVbkH2d/VVW QgrpiKkRkw61rVqkEuf3R2nqdarbE0tggPToiDOAkNAJxLNkZMfK0VwPetaNnlUA7c6Xgl/LL6lPo LHIKxEbAcLw7kwckjuiz6kvNq6mUYQoStQQPeN1FNImxZnvc2r5cDm8ppuX0iGczMmE9wXKfKOq9l 5VqPCMFR6H3eVkLL6OtNWQ==; Date: Fri, 28 Mar 2025 10:17:51 +0300 Message-Id: <868qopbp40.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Colascione <dancol@HIDDEN> In-Reply-To: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> (message from Daniel Colascione on Thu, 27 Mar 2025 16:41:39 -0400) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Date: Thu, 27 Mar 2025 16:41:39 -0400 > From: Daniel Colascione <dancol@HIDDEN> > CC: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN > > >> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an > >> optional mode. If it increases sluggishness unnacceptably (which it > >> won't), users can turn it off. > > > >Experience shows that many users turn on a lot of features which rely > >on post-command-hook, and then complain that Emacs is slow to respond. > >Telling them to turn off features they like doesn't really work. > > Nor does telling external package authors not to use post-command-hook. Well, I could at least try ;-) Who knows, some of them might even listen... > I think there are two worthwhile approaches: 1) time the entries in post-command-hook and alert users about slow ones, and 2) provide a "do something when X, Y, or Z changes" API that authors could use when they would otherwise put something on PCH and check X, Y, and Z internally. Internally, we could DTRT and omit running those hooks when the relevant conditions haven't changed. I'd be okay with developing 1), I think it's a good feature, given the proliferation of features that use this hook. As for 2), I think we already have that: add-variable-watcher. We already use this for a small number of features. Does that fit the bill?
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Daniel Colascione <dancol@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
<875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN>
<86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN>
<86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN>
<86tt7ebfnc.fsf@HIDDEN>
<44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN>
Date: Fri, 28 Mar 2025 01:07:02 -0600
Message-ID: <87a595tyzt.fsf@HIDDEN>
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Daniel Colascione <dancol@HIDDEN> writes:
>>Anyway, I think making the cursor change from a mode hook is a better
>>solution.
I've updated the patch which should use the mode hook instead using
=post-command-hook= or idle timers (and allows (implicitly) to user use
post-command-hook (but that is user responsibility add it or not)).
Also this should refresh the cursor while switching windows.
However I've deleted the function/lambdas support as conditions because
i found it problematic.
I've test it only for overwrite-mode, I ask if anyone wants to give it a try.
--==-=-=
Content-Type: text/html
<p>
Daniel Colascione <dancol@HIDDEN> writes:<br />
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Anyway, I think making the cursor change from a mode hook is a better<br />
solution.<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
I've updated the patch which should use the mode hook instead using<br />
<code>post-command-hook</code> or idle timers (and allows (implicitly) to user use<br />
post-command-hook (but that is user responsibility add it or not)).<br />
</p>
<p>
Also this should refresh the cursor while switching windows.<br />
</p>
<p>
However I've deleted the function/lambdas support as conditions because<br />
i found it problematic.<br />
</p>
<p>
I've test it only for overwrite-mode, I ask if anyone wants to give it a try.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/x-patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-package-cursor-indicators-mode-Bug-77224.patch
Content-Transfer-Encoding: quoted-printable
From 275d3ca5fcea03890e422b845477735f3c30d9ad Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New package 'cursor-indicators-mode' (Bug#77224)
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only.
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document new package.
* lisp/cursor-indicators.el: New file.
---
etc/NEWS | 10 +++
lisp/cursor-indicators.el | 164 ++++++++++++++++++++++++++++++++++++++
2 files changed, 174 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..2745d467722 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,16 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New package 'cursor-indicators-mode'
+This provides a new minor mode, 'cursor-indicators-mode'.
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states according to 'cursor-indicators-conditions'.
+The mode have cursor indicators out the box for:
+- Overwrite mode
+- Read-only buffers
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..c97e6d0748a
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,164 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Version: 1.0.0
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Package-Requires: ((emacs "26.1") (compat "30"))
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package allows changes cursor appearance (color and/or type) to
+;; indicate different buffer states such as if current buffer is
+;; read-only or if overwrite mode is currently active.
+;;
+;; Usage:
+;; For use this mode enable: cursor-indicators-mode.
+;; By default it will set cursor color if overwrite mode is currently
+;; active, if buffer is read-only or if input method is active.
+;;
+;; To change this behavior customize `cursor-indicators-conditions'.
+;; For example, change cursor type to bar when there is a region active:
+;; (setopt cursor-indicators-conditions '((use-region-p . bar)))
+;; Or change both cursor color and type when current buffer have a
+;; specific name:
+;; (setopt cursor-indicators-conditions `((,(lambda () (string-prefix-p " =
*" (buffer-name)))
+;; hollow "yellow")))
+
+;;; Code:
+(require 'compat)
+
+;;; User options
+
+(defcustom cursor-indicators
+ '((overwrite-mode-hook overwrite-mode "red")
+ (read-only-mode-hook buffer-read-only "green")
+ (input-method-activate-hook current-input-method "blue")
+ (input-method-deactivate-hook current-input-method "blue"))
+ "Alist of conditions to which cursor should change its appearence.
+Only used when `cursor-indicators-mode' is enabled.
+
+Each element is an alist entry in one of these forms:
+ (HOOK CONDITION COLOR) Change cursor color
+ (HOOK CONDITION TYPE) Change cursor type
+ (HOOK CONDITION TYPE COLOR) Change cursor color and type
+
+HOOK must be a hook where conditions will be trigger.
+CONDITION must be a variable that must return non-nil.
+COLOR is a string specifying the cursor color.
+TYPE specifies cursor type.
+
+Valid cursor types are:
+ `box' - Filled box
+ `bar' - Vertical bar
+ `hbar' - Horizontal bar
+ `hollow' - Hollow box
+
+Each element in this alist takes predominance according to its order.
+
+If none of the conditions return non-nil, the cursor will use default
+cursor type and color."
+ :group 'cursor
+ :version "31.1"
+ :type '(alist :key-type
+ (variable :tag "Hook")
+ :value-type
+ (group
+ (choice :tag "Condition"
+ (const :tag "Overwrite mode" overwrite-mode)
+ (const :tag "Read-only mode" buffer-read-only)
+ (const :tag "Repeat mode" repeat-in-progress)
+ (const :tag "Activated input method" current-inpu=
t-method)
+ ;; User-defined conditions
+ (function :tag "Variable")
+ (variable :tag "Function"))
+ (choice
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (group :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+
+(defun cursor-indicators--change-cursor ()
+ "Helper function to `cursor-indicators--update-indications'."
+ ;; Check if KEY is non-nil
+ (dolist (el cursor-indicators)
+ (let ((con (nth 1 el))
+ (type-or-color (nth 2 el))
+ (color (nth 3 el)))
+ (when (and (symbolp con) (boundp con) (symbol-value con))
+ (cond
+ ;; Set cursor color
+ ((and (stringp type-or-color) (not (equal type-or-color (frame-pa=
rameter nil 'cursor-color))))
+ (set-cursor-color type-or-color)
+ (setq-local cursor-type (default-value 'cursor-type))) ; Set to =
default cursor type
+ ;; Set cursor type
+ ((and (symbolp type-or-color) (not (eq type-or-color (default-val=
ue 'cursor-type))))
+ (setq-local cursor-type type-or-color)
+ (set-cursor-color cursor-indicators--default-cursor-color)) ; Se=
t to default cursor color
+ ;; Set cursor color and type
+ (color
+ (when (and (symbolp type-or-color) (not (eq type-or-color (defau=
lt-value 'cursor-type)))
+ (stringp color) (not (equal color (frame-parameter ni=
l 'cursor-color))))
+ (set-cursor-color color)
+ (setq-local cursor-type type-or-color))))
+ ;; And exit from loop.
+ (throw 'c-i-exit t)))))
+
+(defun cursor-indicators--update-indications (&rest _)
+ ;; C-I-EXIT is used here for exit from loop.
+ (when (and cursor-type
+ (not (catch 'c-i-exit (cursor-indicators--change-cursor))))
+ (setq-local cursor-type (default-value 'cursor-type))
+ (set-cursor-color cursor-indicators--default-cursor-color)))
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+different buffer states."
+ :group 'cursor
+ :version "31.1"
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (add-hook 'after-change-major-mode-hook #'cursor-indicators--updat=
e-indications)
+ (add-hook 'window-selection-change-functions #'cursor-indicators--=
update-indications)
+ ;; Set indicators hooks
+ (dolist (key cursor-indicators)
+ (let ((hook (car key)))
+ (add-hook hook #'cursor-indicators--update-indications 100 t))=
))
+ ;; Remove all hooks done
+ (remove-hook 'after-change-major-mode-hook #'cursor-indicators--update=
-indications)
+ (remove-hook 'window-selection-change-functions #'cursor-indicators--u=
pdate-indications)
+ (dolist (el cursor-indicators)
+ (remove-hook (car el) #'cursor-indicators--update-indications))
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
--=-=-=
Content-Type: text/plain
--
- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 06:49:07 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 28 02:49:07 2025 Received: from localhost ([127.0.0.1]:52535 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1ty3Wc-00005T-Hs for submit <at> debbugs.gnu.org; Fri, 28 Mar 2025 02:49:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34402) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1ty3WW-00004r-So for 77224 <at> debbugs.gnu.org; Fri, 28 Mar 2025 02:49:04 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1ty3WP-0004dB-Mx; Fri, 28 Mar 2025 02:48:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Qy0bSPaDOR/FadewCm5OWfV0F+OECa8d0HAchJZjgVM=; b=GA3q9KiLyptc 01fOOFqwynJUYoz8V3UUjlspmDsI6P71VH75cOlcZTlKOs00zmeTK5kSnw5PBOOkP3q0lA2KbLC7v GwwuLuXW8b+OtIeB1HnbbTc9vsl5ATLVXrcf4Opu608JOuzU3dHVAWWu2OGZZwS9QTtLACfay34lH E+pjnmQg6lXmM+iCEmFEuUVUSTn5MTri8qyF6QSPO48jjr9g1y8WeldTRRVNtoi8n65rfX3AkKpCX 5gcXL1nFZdn7kIGY6PDwraWEL7yGWq2QnTKl7Fe5lV9RCOAQ5XSTgubNykqWNCA+g8gUN/+/uu08F mCkQqXeMnjCIz/w0/9knKw==; Date: Fri, 28 Mar 2025 09:48:49 +0300 Message-Id: <86bjtlbqge.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <878qoq5iui.fsf@HIDDEN> (message from Daniel Mendler on Thu, 27 Mar 2025 21:17:25 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <878qoq5iui.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Thu, 27 Mar 2025 21:17:25 +0100 > > Here we discuss changing only the color of the cursor, a much much less > complex operation. My point is that when the list on post-command-hook is long, it takes Emacs time to process all the functions on the list, and the longer the list, the less responsive Emacs will be. These small insignificant delays add up. How long is the post-command-hook list in your production sessions? Should we poll users to give their data? Just yesterday someone complained on Reddit that Emacs is too slow, and I have no doubt that features that use post-command-hook are at least part of the reason if not _the_ reason. So I maintain that we should try to avoid post-command-hook for operations that should happen very rarely (this case is one such case: we only want to run this code when something is turned on or off). Even if the reaction to the change is a bit slower, it is worth our while to pay that price: users will be a tad happier with Emacs response times. And if there are alternative methods of doing the same, like the respective mode hooks in this case, we should use them without thinking twice. Ideally, post-command-hook should only be used for stuff that really must be done after almost every command; for any other cases we should look for other Emacs features to do the job. Emacs is a very old program, and if we do it right, it will live a long time since. We should realize the long-run effects of (ab)using stuff like post-command-hook, and try to imagine how much more stuff will be accrued in post-command-hook 40 years hence if we lower our guards in this regard. But I repeat myself.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 28 Mar 2025 00:49:42 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 20:49:42 2025 Received: from localhost ([127.0.0.1]:51963 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txxuo-0008Dq-EA for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 20:49:42 -0400 Received: from mout.web.de ([212.227.17.11]:42629) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <michael_heerdegen@HIDDEN>) id 1txxul-0008DZ-7O for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 20:49:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=web.de; s=s29768273; t=1743122972; x=1743727772; i=michael_heerdegen@HIDDEN; bh=UIDQm8GgVpragslBQILHtHA5rHzSQkEshzpfPzrP2F4=; h=X-UI-Sender-Class:From:To:Cc:Subject:In-Reply-To:References:Date: Message-ID:MIME-Version:Content-Type:cc:content-transfer-encoding: content-type:date:from:message-id:mime-version:reply-to:subject: to; b=mbqlrWoyUMxymzzMKe6JrtDK6OcPJl8UZkBE0cfhSHQ7JWmLaOTatTwan87dZgCB GjdI7tw5PjWnbDNyDwwm/OefXbn5+sSFkoD8F0TJAxwCmeNxJbjD7KbBL2+zOc/ja jfepkd80hRIhbQltSjuqoB1HJ7ZkWdSaz7Nh8BJdlQX+JVOCuuwpGGC8ERr3UKNAM HtgtFcGXBypfpoqWy3kwQ0kGnRkOw2gAZF+GWVRVxLuKZycORxXuVuCFJemfZuAzR mtkMdOjYNjovhFt4SJVpnnE1tJa5wveB9H5/5oV64M7DyhZB++TFBFuuM1jod7kRm Q9xBinfgTRkXnWAxbw== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from drachen.dragon ([88.66.201.136]) by smtp.web.de (mrweb106 [213.165.67.124]) with ESMTPSA (Nemesis) id 1MTOli-1tYZqC35A4-00U4gq; Fri, 28 Mar 2025 01:49:32 +0100 From: Michael Heerdegen <michael_heerdegen@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <8634f0dkhq.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> Date: Fri, 28 Mar 2025 01:51:03 +0100 Message-ID: <87ldsq7zbc.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Provags-ID: V03:K1:ElsFRiSRAiq2el/n6kelZXhwsk2Z4opaFHMrhQItPo0dx7A9Tcq VMY2euJq0/5eOU6i+yA70dltqPUg4E6GM4fQNTG28T+HLrX7gW3kyxpVV+PbzWEkZRHOZfJ FQcWS7bs1IesnKyG9CVsiYSEGaz2CHj0/ZHmHGKQfhqSo/uG0e/u7ni0dV3geVvN2eH8VUq IkCN31ClyP5MmauuevGHg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:fdzsq2nvuEA=;asMHFyXPb7tBhLHIj36VxrrOska nEqm18BO+IrLPdqVfYtS0/otIfrhm+y9doxOv5/woj+DdSQ8nPyP7/QaIP6MfQb3DFQk1V2Z+ 78db6+iduBfwP9+nd7OGooN+vC/QybP0B7rMTMpWfKiUg0aNiXnemwMhDZafGzPE2rJXLfFxY 3jwGMI7yfqfC27Gqj9Gal7FG8u4m65r7W3rRGtc8hhuNiIW3Kl71AHhgoUwInxKKGm4wzOCkX 3knUmwNsTw3d1jIRnBieHdhDkmkVLl6yyNWPbQNFZJdmRBaE6X9DT9VyC4LlKQcR27REmIfHI s4pfPaB2wdg0kGvAX/xjZL5Z0ETQZdo5lSzO/25dyt439VhK7S2BpHps3/9WgCzTECshD4MWW GNhy0YYlPtCnZnprjn3pf6A2bJEQSdLgfPfIQYFoxOCd8iCkZWkPcbYjgQ3B8SsfAH+YSUda9 jRSHI8X8gSzxN3YSXFFhQdnC7zs8O6IOnCk8cVL98NjMPoTA7c0c8HdyX/ppxlVRjjErS6+V4 WdATYWDhKLozofxMsmn9S3BC7fYeaOHKNny/8KFn47vqg7zuzaz0SB+Dsw1W4K8LluVYokw1k 7NdSbqGczXyb/90qE4WsSqpr5MAZ5dCZjJHfY7hNbGPWltnwh8+H4628xbEdX8tO53nzNpWFG 2PvNZ5HeER6PNH/No1x3xs4VASNhL3QqfsDMN46v7gmG64kuQVGgBnqg1AIwfwGZYGGrDAxPe loUhfkhL9qudn/Sz8shHt27NM+7Z8TtQexrt8ODwEzNX95Oiguxj8g97X7VXerVqmN+cg3bPk oHfH0JE39yjwaM73ot9gUIvcbpH9/efmdpdKudDlfYWKlIy1g62jDkuXRe6Z96QKnKAy7RYRW Y+Kxbollqdf7qRfi+B7tsfR0BLN3AgHCH5jaQTFaZGN6/5hC6rdu1qeYO3Mo8XNXhGebQmhp7 jO0H//XnStDpyKXK54ZR/iHUyhVQ0eqlJIIcFadq1leGq+Xg/de7kE7XsiFYORZdPu8xMwWrz w3Vv5JwMX3ykkMCQFlXqIG/ZhWlU9g2g4UmCHdmipyP5ZzyEdT9Tl6+UIMQ03l5K1qYt+Bc3m 0OJMUi8phvRBw8N9B98vUdkvIn+uvpTVycrGji1b9NcIFGWk59Z38MwgmI47OtCBcUP8CYljJ RPEMqzmmd4tTAuUQ2AcE8XqHE8R1Tl1/0pDvCoIFagnWg0hNpek0hcyJLPJow/vA6lMQT7OXy lqv5TRSALCfERZsNlj9L3QD1JOeB3N49BHcH0KiBtAEzB/JKLtwKb0OC5Xo9TwB88BYMUMlF6 mWck3E1YhGKMjLXloE5mIcahlnFKr/3Sy/blKARFbRdyRAa7SRGgAa3F1H+5dLJKdf6kj7xGy 2yjhfsYn1fuR9fQbgKkPsJmSpYARaepzXKiCpqp4Zwar0F8LPJYdfePofBXxZl6yOvug0Ge5h vF9S5RyeUt5dJ6L7ilAaYJSYIgsM= X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, Juri Linkov <juri@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Would it be better to use an idle timer instead? post-command-hook > tends to make Emacs sluggish. post-command-hook is the most general, and thus the simplest way to implement something like this, but not necessarily a good way. A solution using such a general tool like post-command-hook also comes with problems. What if something adds something to post-command-hook that changes one of the conditions that should trigger a cursor type change? And yes, obviously, the conditions are checked much too often when using post-command-hook, and yes, people will complain because they are will add conditions where checking is not that cheap. Timers are a bit better, but are also far from optimal. I would really prefer to use other hooks. If we miss a hook, let's add those hooks we miss. Nearly all uses of hooks could be replaced by adding something to post-command-hook, but the other hooks are there for a reason. What's different in this case that justifies this measure here (the question does not go to Eli, obviously)? If we can't use other hooks, are there other alternatives? Variable watchers have been mentioned - would using those be possible? Or, could we at least try to use the buffer local binding of post-command-hook, at least for conditions that are buffer local anyway? Michael.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 20:48:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 16:48:27 2025 Received: from localhost ([127.0.0.1]:51565 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txu9K-0001uF-VL for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:48:27 -0400 Received: from dancol.org ([2600:3c01:e000:3d8::1]:35044) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <dancol@HIDDEN>) id 1txu9I-0001u5-CR for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:48:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=dancol.org; s=x; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID: References:In-Reply-To:Subject:CC:To:From:Date:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=7W0lMmcYGrq9215poGXmQMBRSfVYhZVbTZOOumdZIO4=; b=oM1iv/qDy2IgSExxwaXfmZK1bG g6x3DGNLsLHy4kvHlOaoO9tonJy923iogB34bVC0c0b2kQxAEjAPU0KURUDmcT6qLvuVCtdhlRnU0 plIDNs3Dkcai1C52LN/rJWZh9a6g68fKdwGyFKxIQl2L2Puzj4g5sUhdYx8bPJoq1KmlQqs/XIPdE bg7CN/wVu7ZiFbTcjIp17quqP+XrbCa1e8WQf1UscI4m4+exgsSPu1tWgqZM0WR6dJGqQpid1yMjC uzJ7r9f5//NLGTRneqHn5vTt5ZghS/XHdz6HpV0NCU0WzIcWzFK3bkqEx/p8j00GIvi56EBNEtEEG DdBPV45w==; Received: from 2603-9001-4203-1ab2-6547-8c8c-bd19-5cb4.inf6.spectrum.com ([2603:9001:4203:1ab2:6547:8c8c:bd19:5cb4]:39814 helo=[IPv6:::1]) by dancol.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from <dancol@HIDDEN>) id 1txu8o-004FOx-0d; Thu, 27 Mar 2025 16:47:55 -0400 Date: Thu, 27 Mar 2025 16:47:03 -0400 From: Daniel Colascione <dancol@HIDDEN> To: bug-gnu-emacs@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, Daniel Mendler <mail@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' User-Agent: K-9 Mail for Android In-Reply-To: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> Message-ID: <93E6AF16-CA6C-443F-9712-B395E2403F60@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On March 27, 2025 4:41:39 PM EDT, Daniel Colascione <dancol@dancol=2Eorg> = wrote: > > >On March 27, 2025 12:29:59 PM EDT, Eli Zaretskii <eliz@gnu=2Eorg> wrote: >>> From: Daniel Mendler <mail@daniel-mendler=2Ede> >>> Cc: eg642616@gmail=2Ecom, 77224@debbugs=2Egnu=2Eorg, juri@linkov=2En= et >>> Date: Thu, 27 Mar 2025 17:04:09 +0100 >>>=20 >>> Eli Zaretskii <eliz@gnu=2Eorg> writes: >>>=20 >>> > I disagree that the cursor must change "immediately", in the rigorou= s >>> > sense of that word=2E I think if it changes after 10 or 20 or 50 >>> > milliseconds, that's "immediately" for any practical purpose=2E >>>=20 >>> No, 50ms are not acceptable for the user if they except an immediate >>> response to a key press=2E >> >>50ms was just an example, and it is actually quite improbable to be >>that large=2E >> >>post-command-hook is run by the same loop that decides that Emacs is >>idle and runs timers, so the difference in practice should be very >>small if at all=2E >> >>> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an >>> optional mode=2E If it increases sluggishness unnacceptably (which it >>> won't), users can turn it off=2E >> >>Experience shows that many users turn on a lot of features which rely >>on post-command-hook, and then complain that Emacs is slow to respond=2E >>Telling them to turn off features they like doesn't really work=2E > >Nor does telling external package authors not to use post-command-hook=2E= I think there are two worthwhile approaches: 1) time the entries in post-c= ommand-hook and alert users about slow ones, and 2) provide a "do something= when X, Y, or Z changes" API that authors could use when they would otherw= ise put something on PCH and check X, Y, and Z internally=2E Internally, we= could DTRT and omit running those hooks when the relevant conditions haven= 't changed=2E > >For example, instead of putting something buffer and focus dependent in P= CH or fiddling with buffer and window and frame hooks, you could write some= thing like > >(call-on-change (:buffer :window :focus) #'my-thing) > >or something like that=2E > >It's not that you can't do the equivalent by manually adding my-thing to = the appropriate hooks directly, but the convenient one stop syntax might gu= ide people away from PCH=2E Also, we'd be able to coalesce and debounce calls to these change function= s=2E
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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Thu, 27 Mar 2025 16:47:55 -0400 Date: Thu, 27 Mar 2025 16:47:03 -0400 From: Daniel Colascione <dancol@HIDDEN> To: bug-gnu-emacs@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, Daniel Mendler <mail@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' User-Agent: K-9 Mail for Android In-Reply-To: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> Message-ID: <93E6AF16-CA6C-443F-9712-B395E2403F60@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2600:3c01:e000:3d8::1; envelope-from=dancol@HIDDEN; helo=dancol.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: 0.9 (/) X-Debbugs-Envelope-To: submit Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.1 (/) On March 27, 2025 4:41:39 PM EDT, Daniel Colascione <dancol@dancol=2Eorg> = wrote: > > >On March 27, 2025 12:29:59 PM EDT, Eli Zaretskii <eliz@gnu=2Eorg> wrote: >>> From: Daniel Mendler <mail@daniel-mendler=2Ede> >>> Cc: eg642616@gmail=2Ecom, 77224@debbugs=2Egnu=2Eorg, juri@linkov=2En= et >>> Date: Thu, 27 Mar 2025 17:04:09 +0100 >>>=20 >>> Eli Zaretskii <eliz@gnu=2Eorg> writes: >>>=20 >>> > I disagree that the cursor must change "immediately", in the rigorou= s >>> > sense of that word=2E I think if it changes after 10 or 20 or 50 >>> > milliseconds, that's "immediately" for any practical purpose=2E >>>=20 >>> No, 50ms are not acceptable for the user if they except an immediate >>> response to a key press=2E >> >>50ms was just an example, and it is actually quite improbable to be >>that large=2E >> >>post-command-hook is run by the same loop that decides that Emacs is >>idle and runs timers, so the difference in practice should be very >>small if at all=2E >> >>> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an >>> optional mode=2E If it increases sluggishness unnacceptably (which it >>> won't), users can turn it off=2E >> >>Experience shows that many users turn on a lot of features which rely >>on post-command-hook, and then complain that Emacs is slow to respond=2E >>Telling them to turn off features they like doesn't really work=2E > >Nor does telling external package authors not to use post-command-hook=2E= I think there are two worthwhile approaches: 1) time the entries in post-c= ommand-hook and alert users about slow ones, and 2) provide a "do something= when X, Y, or Z changes" API that authors could use when they would otherw= ise put something on PCH and check X, Y, and Z internally=2E Internally, we= could DTRT and omit running those hooks when the relevant conditions haven= 't changed=2E > >For example, instead of putting something buffer and focus dependent in P= CH or fiddling with buffer and window and frame hooks, you could write some= thing like > >(call-on-change (:buffer :window :focus) #'my-thing) > >or something like that=2E > >It's not that you can't do the equivalent by manually adding my-thing to = the appropriate hooks directly, but the convenient one stop syntax might gu= ide people away from PCH=2E Also, we'd be able to coalesce and debounce calls to these change function= s=2E
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 27 Mar 2025 20:42:15 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 16:42:14 2025 Received: from localhost ([127.0.0.1]:51549 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txu3K-0001d9-3E for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:42:14 -0400 Received: from lists.gnu.org ([2001:470:142::17]:34424) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <dancol@HIDDEN>) id 1txu35-0001c7-8W for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:41:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <dancol@HIDDEN>) id 1txu2z-0006jm-Vh for bug-gnu-emacs@HIDDEN; Thu, 27 Mar 2025 16:41:53 -0400 Received: from dancol.org ([2600:3c01:e000:3d8::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <dancol@HIDDEN>) id 1txu2v-0005QL-Kp; 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Thu, 27 Mar 2025 16:41:19 -0400 Date: Thu, 27 Mar 2025 16:41:39 -0400 From: Daniel Colascione <dancol@HIDDEN> To: bug-gnu-emacs@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, Daniel Mendler <mail@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' User-Agent: K-9 Mail for Android In-Reply-To: <86tt7ebfnc.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> Message-ID: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2600:3c01:e000:3d8::1; envelope-from=dancol@HIDDEN; helo=dancol.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: 0.9 (/) X-Debbugs-Envelope-To: submit Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.1 (/) On March 27, 2025 12:29:59 PM EDT, Eli Zaretskii <eliz@gnu=2Eorg> wrote: >> From: Daniel Mendler <mail@daniel-mendler=2Ede> >> Cc: eg642616@gmail=2Ecom, 77224@debbugs=2Egnu=2Eorg, juri@linkov=2Ene= t >> Date: Thu, 27 Mar 2025 17:04:09 +0100 >>=20 >> Eli Zaretskii <eliz@gnu=2Eorg> writes: >>=20 >> > I disagree that the cursor must change "immediately", in the rigorous >> > sense of that word=2E I think if it changes after 10 or 20 or 50 >> > milliseconds, that's "immediately" for any practical purpose=2E >>=20 >> No, 50ms are not acceptable for the user if they except an immediate >> response to a key press=2E > >50ms was just an example, and it is actually quite improbable to be >that large=2E > >post-command-hook is run by the same loop that decides that Emacs is >idle and runs timers, so the difference in practice should be very >small if at all=2E > >> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an >> optional mode=2E If it increases sluggishness unnacceptably (which it >> won't), users can turn it off=2E > >Experience shows that many users turn on a lot of features which rely >on post-command-hook, and then complain that Emacs is slow to respond=2E >Telling them to turn off features they like doesn't really work=2E Nor does telling external package authors not to use post-command-hook=2E = I think there are two worthwhile approaches: 1) time the entries in post-co= mmand-hook and alert users about slow ones, and 2) provide a "do something = when X, Y, or Z changes" API that authors could use when they would otherwi= se put something on PCH and check X, Y, and Z internally=2E Internally, we = could DTRT and omit running those hooks when the relevant conditions haven'= t changed=2E For example, instead of putting something buffer and focus dependent in PC= H or fiddling with buffer and window and frame hooks, you could write somet= hing like (call-on-change (:buffer :window :focus) #'my-thing) or something like that=2E It's not that you can't do the equivalent by manually adding my-thing to t= he appropriate hooks directly, but the convenient one stop syntax might gui= de people away from PCH=2E > >Anyway, I think making the cursor change from a mode hook is a better >solution=2E +1=20 >
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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bh=DR+s+MO9eKJedPblRkdogF9UD47g/Ap8ilT5MINlC+s=; b=Hr5SdC8sYpMAar6G0Pq/Lss/pU uwcEeXxFciUKQdUlOfr0OmxovBVbrhRAEp5uBFyfQiFZ76nsdwPp1v7EX/izB3oPYGwg7kiSbsTGt WGbQDJdrKTfqN+q1VIduEbxXI85FkmAM+jgTO1dzkfOk30sZ4q93pN7OFvYm00a1MDCYXer6EKVyO w3ezhJ0hUeJM9a/Scxor2weGeO0HZeN4E+5iUWm8O49aTTSfK9TrO7Sh6w+leG7OgQfT/ZncvUz3B jj2bROqcXc2vbQiud3c7bN7BNSEq6oQw3lDSBxS5tyGrZNwTRxHwAMsW03C47G0CT/ZUQ6NruwnxA orKJki8g==; Received: from 2603-9001-4203-1ab2-6547-8c8c-bd19-5cb4.inf6.spectrum.com ([2603:9001:4203:1ab2:6547:8c8c:bd19:5cb4]:47182 helo=[IPv6:::1]) by dancol.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from <dancol@HIDDEN>) id 1txu2R-004FNd-1w; Thu, 27 Mar 2025 16:41:19 -0400 Date: Thu, 27 Mar 2025 16:41:39 -0400 From: Daniel Colascione <dancol@HIDDEN> To: bug-gnu-emacs@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, Daniel Mendler <mail@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' User-Agent: K-9 Mail for Android In-Reply-To: <86tt7ebfnc.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> Message-ID: <44319BF5-31B5-4ECD-95AB-591A216D0072@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On March 27, 2025 12:29:59 PM EDT, Eli Zaretskii <eliz@gnu=2Eorg> wrote: >> From: Daniel Mendler <mail@daniel-mendler=2Ede> >> Cc: eg642616@gmail=2Ecom, 77224@debbugs=2Egnu=2Eorg, juri@linkov=2Ene= t >> Date: Thu, 27 Mar 2025 17:04:09 +0100 >>=20 >> Eli Zaretskii <eliz@gnu=2Eorg> writes: >>=20 >> > I disagree that the cursor must change "immediately", in the rigorous >> > sense of that word=2E I think if it changes after 10 or 20 or 50 >> > milliseconds, that's "immediately" for any practical purpose=2E >>=20 >> No, 50ms are not acceptable for the user if they except an immediate >> response to a key press=2E > >50ms was just an example, and it is actually quite improbable to be >that large=2E > >post-command-hook is run by the same loop that decides that Emacs is >idle and runs timers, so the difference in practice should be very >small if at all=2E > >> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an >> optional mode=2E If it increases sluggishness unnacceptably (which it >> won't), users can turn it off=2E > >Experience shows that many users turn on a lot of features which rely >on post-command-hook, and then complain that Emacs is slow to respond=2E >Telling them to turn off features they like doesn't really work=2E Nor does telling external package authors not to use post-command-hook=2E = I think there are two worthwhile approaches: 1) time the entries in post-co= mmand-hook and alert users about slow ones, and 2) provide a "do something = when X, Y, or Z changes" API that authors could use when they would otherwi= se put something on PCH and check X, Y, and Z internally=2E Internally, we = could DTRT and omit running those hooks when the relevant conditions haven'= t changed=2E For example, instead of putting something buffer and focus dependent in PC= H or fiddling with buffer and window and frame hooks, you could write somet= hing like (call-on-change (:buffer :window :focus) #'my-thing) or something like that=2E It's not that you can't do the equivalent by manually adding my-thing to t= he appropriate hooks directly, but the convenient one stop syntax might gui= de people away from PCH=2E > >Anyway, I think making the cursor change from a mode hook is a better >solution=2E +1=20 >
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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[23.240.109.202]) by smtp.googlemail.com with ESMTPSA id d2e1a72fcca58-7397106b01asm273378b3a.102.2025.03.27.13.32.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Mar 2025 13:32:16 -0700 (PDT) Message-ID: <bc452b18-3561-29e2-0247-a43c19575e77@HIDDEN> Date: Thu, 27 Mar 2025 13:32:16 -0700 MIME-Version: 1.0 Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' Content-Language: en-US To: Eli Zaretskii <eliz@HIDDEN>, mail@HIDDEN References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <86a596d7l5.fsf@HIDDEN> From: Jim Porter <jporterbugs@HIDDEN> In-Reply-To: <86a596d7l5.fsf@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On 3/27/2025 4:41 AM, Eli Zaretskii wrote: > Btw, a possibly even better way is to modify the cursor looks from the > hooks of the relevant commands, like overwrite-mode. If some of them > don't have a hook, we could add a hook. This is better because it > doesn't unnecessarily "punish" Emacs anywhere else, only the commands > that could affect the cursor. > > Does this make sense? That makes sense to me, and is approximately what I have in my own configuration to do the same sort of thing as this patch. I update the cursor by adding a hook to 'after-change-major-mode-hook' and then adding variable watchers for 'buffer-read-only' and 'overwrite-mode'. That was the most-reliable method I could find at the time. If there were appropriate hooks for read-only/overwrite, then I think that would be the ideal solution.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 20:17:44 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 16:17:44 2025 Received: from localhost ([127.0.0.1]:51495 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txtfY-0000Sh-G7 for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:17:44 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:34123 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1txtfS-0000SN-9W for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 16:17:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=byP74CLiKgIVYjs+xBmOMXWFZ/zIgDzSUFYBi0WRk4I=; b=nxeOT4/2KiBmzXZCAiGI32Fsdf mIwO45Bq3cm6N001UmP0N3/tgISZvTFYedmLWRdtuUBtVdcBXzhg/uz4lqRtYKw/1p7JQb3fz0t0m 9AzhmIktXo1tg7AvABgHXBnkf4/VnoPpKzVkzyyi5BAr75y7h/fMMHwcECBv8anyANPU=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86pli2befe.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 27 Mar 2025 18:56:21 +0200") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> Date: Thu, 27 Mar 2025 21:17:25 +0100 Message-ID: <878qoq5iui.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Thu, 27 Mar 2025 17:39:59 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> > post-command-hook is run by the same loop that decides that Emacs is >> > idle and runs timers, so the difference in practice should be very >> > small if at all. >> >> The `post-command-hook' is guaranteed to run after a command while the >> idle timer is delayed until no new events are in the queue. > > No, the idle time is run immediately if there's no input. Emacs > doesn't wait or delay the timer. We are saying the same thing here. Yes, if there is no input, the idle timer will run immediately. But if the user continues typing and events are in the queue, then the timer will not run for some time. A delay also occurs when an asynchronous process runs and fills a buffer in the background like the *compilation* buffer. Then the cursor update will lag behind. I am with you that one should not carelessly add `post-command-hooks'. I use various modes which use `post-command-hooks', idle timers and regular timers, each for their proper use case. For example `post-command-hooks' lead to sluggishness if they were used for auto completion, spell checking or help at point (like Eldoc). For such use cases idle timers or regular timers are the better tool since they defer the expensive computation of completion strings, talking to a language server, completion backend or a spell checker. Here we discuss changing only the color of the cursor, a much much less complex operation. The `cursor-type' update and checking a few variables to find the color is a cheap operation which will not lead to sluggishness. If this were an expensive operation, I would look elsewhere for places to optimize, but avoiding `post-command-hook' is not the solution. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 19:25:41 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 15:25:41 2025 Received: from localhost ([127.0.0.1]:51417 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txsrE-0006X9-RE for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 15:25:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40288) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txsrA-0006Wq-7g for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 15:25:37 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txsr3-000326-2z; Thu, 27 Mar 2025 15:25:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=xZiyZIhdg9yQRybG9pX1oDipf3DffQyQBau+Hunkegg=; b=JnchDMyg/w3wHTyvjqGK B7QmQ5yKFQREe/1COySo1SxrZCnu0NWMnDpCwtN7i9CMVNTcxgkOd7e0fsjPm92f4UXe9iS09LHB7 0tsCCnGvwI8m4ykW2oJfLLRTuydhI5+GEIO+ygnZmdjNDooQRTUCGiqtabtsbRNFWT7cq56iYqecK p1h/iz7ZIt4xCK7Te+DrBZK4yj9cNqPhX9JWCfUWFdbQ8sX1KZ0UKJBfJHLGklIhvDRS+9xuUS4ow AaRj8s/TerEIqD1JDdbswE+0QxBnH6y/lZfedR8lZC8b2UK+NWZVUxSYBiQHvVaPO9KIFYHkPpQ3d YI2ZTWSuCH5QaQ==; Date: Thu, 27 Mar 2025 21:25:22 +0200 Message-Id: <86iknub7j1.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Elijah Gabe =?utf-8?Q?P=C3=A9rez?= <eg642616@HIDDEN> In-Reply-To: <87pli2z5v9.fsf@HIDDEN> (message from Elijah Gabe =?utf-8?Q?P=C3=A9rez?= on Thu, 27 Mar 2025 12:27:22 -0600) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <86pli2befe.fsf@HIDDEN> <87pli2z5v9.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Elijah Gabe Pérez <eg642616@HIDDEN> > Cc: Daniel Mendler <mail@HIDDEN>, 77224 <at> debbugs.gnu.org, > juri@HIDDEN > Date: Thu, 27 Mar 2025 12:27:22 -0600 > > Eli Zaretskii <eliz@HIDDEN> writes: > > Anyway, I think making the cursor change from a mode hook is a better > solution. > > As has been mentioned, the problem is that not every scenario is covered > by hooks, while the PCH is a potentially universal solution which can > check arbitrary conditions. But if hooks work sufficiently well for most > scenarios, then why not. > > If there are cases that this indication supports but there's no mode > hook for them, let's discuss those cases one by one and see how to > solve them. I see overwrite-mode, read-only-mode, and input-method > activation, all of which have hooks, AFAIR. > > But the problem with using hooks is that modes sometimes defines a > specific name for hook or use different hooks for that, for example > overwrite-mode only defines overwrite-mode-hook, however input-method > defines input-method-activate-hook and input-method-deactivate-hook or > mark/region have activate-mark-hook and deactivate-mark-hook. If there's a single hook, it is called both when turning the mode on and when turning it off, so I'm not sure I see the problem. Anyway, I think I'm done arguing. I'm quite sure you all understand my opinions and suggestions; if you want to disregard them and use the post-command-hook anyway, feel free, but don't be surprised if someone then complains that Emacs became a tad slower: it's because of all these features that take the easy way out and use post-command-hook, and by that add yet another one of those small slowdowns, which add up and up...
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 19:13:38 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 15:13:38 2025 Received: from localhost ([127.0.0.1]:51383 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txsfa-0005tx-Du for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 15:13:38 -0400 Received: from relay6-d.mail.gandi.net ([217.70.183.198]:35231) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <juri@HIDDEN>) id 1txsfX-0005td-8W for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 15:13:35 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id 23CFA442AC; Thu, 27 Mar 2025 19:13:24 +0000 (UTC) From: Juri Linkov <juri@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86jz8ababt.fsf@HIDDEN> Organization: LINKOV.NET References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <87semywfkr.fsf@HIDDEN> <86jz8ababt.fsf@HIDDEN> Date: Thu, 27 Mar 2025 21:13:06 +0200 Message-ID: <87pli2qocd.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/31.0.50 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdduieelvddvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjohhffffkfgggtgesthdtredttdertdenucfhrhhomheplfhurhhiucfnihhnkhhovhcuoehjuhhriheslhhinhhkohhvrdhnvghtqeenucggtffrrghtthgvrhhnpeffgeetfeevlefhleejfeeuheeiudeitdffhfdutdekfeffgffhveehteegueekheenucfkphepledurdduvdelrddutdehrdduudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledurdduvdelrddutdehrdduudejpdhhvghlohepmhgrihhlrdhgrghnughirdhnvghtpdhmrghilhhfrhhomhepjhhurhhisehlihhnkhhovhdrnhgvthdpnhgspghrtghpthhtohepgedprhgtphhtthhopeejjedvvdegseguvggssghughhsrdhgnhhurdhorhhgpdhrtghpthhtohepvghgieegvdeiudeisehgmhgrihhlrdgtohhmpdhrtghpthhtohepmhgrihhlsegurghnihgvlhdqmhgvnhgulhgvrhdruggvpdhrtghpthhtohepvghlihiisehgnhhurdhorhhg X-GND-Sasl: juri@HIDDEN X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) >> > I think Stefan and Juri should chime in with their experience about >> > this, since as I've seen, they both want to replace some custom cursor >> > code with the new mode in their configuration. >> >> I tried the patch with 'run-with-idle-timer', >> and even the delay 0.1 is noticeable and causes >> the feeling that Emacs became sluggish >> and can't update the cursor immediately. > > What about the delay of zero? Ok, will try zero for a while.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Juri Linkov <juri@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <87semywfkr.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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Date: Thu, 27 Mar 2025 12:35:41 -0600
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--=-=-=
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Juri Linkov <juri@HIDDEN> writes:
>> I think Stefan and Juri should chime in with their experience about
>> this, since as I've seen, they both want to replace some custom cursor
>> code with the new mode in their configuration.
> I tried the patch with 'run-with-idle-timer',
> and even the delay 0.1 is noticeable and causes
> the feeling that Emacs became sluggish
> and can't update the cursor immediately.
I think with 0.005 is most that fine, it's not immediate but also not
too lazy IMO.
Anyways the user can change the delay to 0.
--==-=-=
Content-Type: text/html
<p>
Juri Linkov <juri@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>I think Stefan and Juri should chime in with their experience about<br />
this, since as I've seen, they both want to replace some custom cursor<br />
code with the new mode in their configuration.<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>I tried the patch with 'run-with-idle-timer',<br />
and even the delay 0.1 is noticeable and causes<br />
the feeling that Emacs became sluggish<br />
and can't update the cursor immediately.<br />
</div></blockquote>
</p>
<p>
I think with 0.005 is most that fine, it's not immediate but also not<br />
too lazy IMO.<br />
</p>
<p>
Anyways the user can change the delay to 0.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/plain
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- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <86pli2befe.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
<875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN>
<86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN>
<86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN>
<86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN>
<86pli2befe.fsf@HIDDEN>
Date: Thu, 27 Mar 2025 12:27:22 -0600
Message-ID: <87pli2z5v9.fsf@HIDDEN>
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Eli Zaretskii <eliz@HIDDEN> writes:
>> > Anyway, I think making the cursor change from a mode hook is a better
>> > solution.
>> As has been mentioned, the problem is that not every scenario is covered
>> by hooks, while the PCH is a potentially universal solution which can
>> check arbitrary conditions. But if hooks work sufficiently well for most
>> scenarios, then why not.
> If there are cases that this indication supports but there's no mode
> hook for them, let's discuss those cases one by one and see how to
> solve them. I see overwrite-mode, read-only-mode, and input-method
> activation, all of which have hooks, AFAIR.
But the problem with using hooks is that modes sometimes defines a
specific name for hook or use different hooks for that, for example
overwrite-mode only defines overwrite-mode-hook, however input-method
defines input-method-activate-hook and input-method-deactivate-hook or
mark/region have activate-mark-hook and deactivate-mark-hook.
--==-=-=
Content-Type: text/html
<p>
Eli Zaretskii <eliz@HIDDEN> writes:<br />
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Anyway, I think making the cursor change from a mode hook is a better<br />
solution.<br />
</div></blockquote>
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>As has been mentioned, the problem is that not every scenario is covered<br />
by hooks, while the PCH is a potentially universal solution which can<br />
check arbitrary conditions. But if hooks work sufficiently well for most<br />
scenarios, then why not.<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>If there are cases that this indication supports but there's no mode<br />
hook for them, let's discuss those cases one by one and see how to<br />
solve them. I see overwrite-mode, read-only-mode, and input-method<br />
activation, all of which have hooks, AFAIR.<br />
</div></blockquote>
</p>
<p>
But the problem with using hooks is that modes sometimes defines a<br />
specific name for hook or use different hooks for that, for example<br />
overwrite-mode only defines overwrite-mode-hook, however input-method<br />
defines input-method-activate-hook and input-method-deactivate-hook or<br />
mark/region have activate-mark-hook and deactivate-mark-hook.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/plain
--
- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 18:25:13 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 14:25:13 2025 Received: from localhost ([127.0.0.1]:51296 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txrui-0000d6-Ht for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 14:25:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50338) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txruf-0000Xe-Dc for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 14:25:10 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txruW-0003Zw-12; Thu, 27 Mar 2025 14:25:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=/uY1ow7ciAcJS2pWCJSW2/WMIkpzuAULx2KcjhFhuCo=; b=QdeiTD0bMbgp 11FM7KAkWcSB+uaZMzOQukyYG6Ro/whNbJJSJXDtbYuQ2zWKL9TRgn5E3r3DvU4aQKERrFm64iOCD 8ioAT4xaUzJPUUaL4mcGeMk3Hql63vO2sUMa8OlnHLlFgAYpwhQqhSrRJHvdDMWqB0fn402rtloQm U+EJPpoYqA8aNFBCetfV1LVbuHgLmMmtUImV8fVvKsnvtHNOrLhvM3kG868NNbHishOrJwCZGMn01 VVoPaaKPUhDES5vNL1VQdc478zN5hxNHTVweTN5+/hLdKv3gbhGhFOsl1tpzG6ZwObIqqSN50vIoo ZdBa6SetNLGFMcqF0feJZA==; Date: Thu, 27 Mar 2025 20:24:54 +0200 Message-Id: <86jz8ababt.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Juri Linkov <juri@HIDDEN> In-Reply-To: <87semywfkr.fsf@HIDDEN> (message from Juri Linkov on Thu, 27 Mar 2025 19:45:56 +0200) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> <87semywfkr.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, eg642616@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Juri Linkov <juri@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, eg642616@HIDDEN, 77224 <at> debbugs.gnu.org > Date: Thu, 27 Mar 2025 19:45:56 +0200 > > > I think Stefan and Juri should chime in with their experience about > > this, since as I've seen, they both want to replace some custom cursor > > code with the new mode in their configuration. > > I tried the patch with 'run-with-idle-timer', > and even the delay 0.1 is noticeable and causes > the feeling that Emacs became sluggish > and can't update the cursor immediately. What about the delay of zero?
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 18:00:16 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 14:00:16 2025 Received: from localhost ([127.0.0.1]:51252 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txrWZ-0006iU-RP for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 14:00:16 -0400 Received: from relay1-d.mail.gandi.net ([2001:4b98:dc4:8::221]:44827) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <juri@HIDDEN>) id 1txrWW-0006bG-Jg for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 14:00:13 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id 860164433D; Thu, 27 Mar 2025 18:00:03 +0000 (UTC) From: Juri Linkov <juri@HIDDEN> To: Daniel Mendler <mail@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <877c4aa0m8.fsf@HIDDEN> Organization: LINKOV.NET References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> Date: Thu, 27 Mar 2025 19:45:56 +0200 Message-ID: <87semywfkr.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/31.0.50 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdduieeltdejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjohhffffkfgggtgesthdtredttdertdenucfhrhhomheplfhurhhiucfnihhnkhhovhcuoehjuhhriheslhhinhhkohhvrdhnvghtqeenucggtffrrghtthgvrhhnpeffgeetfeevlefhleejfeeuheeiudeitdffhfdutdekfeffgffhveehteegueekheenucfkphepledurdduvdelrddutdehrdduudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledurdduvdelrddutdehrdduudejpdhhvghlohepmhgrihhlrdhgrghnughirdhnvghtpdhmrghilhhfrhhomhepjhhurhhisehlihhnkhhovhdrnhgvthdpnhgspghrtghpthhtohepgedprhgtphhtthhopeejjedvvdegseguvggssghughhsrdhgnhhurdhorhhgpdhrtghpthhtohepvghgieegvdeiudeisehgmhgrihhlrdgtohhmpdhrtghpthhtohepvghlihiisehgnhhurdhorhhgpdhrtghpthhtohepmhgrihhlsegurghnihgvlhdqmhgvnhgulhgvrhdruggv X-GND-Sasl: juri@HIDDEN X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN>, eg642616@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > I think Stefan and Juri should chime in with their experience about > this, since as I've seen, they both want to replace some custom cursor > code with the new mode in their configuration. I tried the patch with 'run-with-idle-timer', and even the delay 0.1 is noticeable and causes the feeling that Emacs became sluggish and can't update the cursor immediately. So I'd prefer to use 'post-command-hook' that updates the cursor immediately. I already used this for many years, and there were no problems. As for adding more specific hooks, this is not simple to do since the cursor color depends on the current buffer and should be updated every time after switching to another buffer. And even with adding it to the display-buffer hook the complexity will explode.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 17:46:45 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 13:46:45 2025 Received: from localhost ([127.0.0.1]:51219 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txrJV-0005Og-1R for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 13:46:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46028) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txrJS-0005O9-P2 for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 13:46:43 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txrJL-0006uB-NS; Thu, 27 Mar 2025 13:46:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=5N86iZ5fOdK8Lx8vSj/fBLDvm5W9W4ICwgDg5QsJF9M=; b=RIcfGl1CYrKr9qVSSmoC z9ubBfwVmxEPlnw/ZSRx/C8d4V6080vbSKfOFaV/UaAV8QawijIVfDflM764ir5MxYVWlz0LAUjja TFqI+bRQKqbH4wyKCNJ7OTjYdfwDBbS/o4y5X8OMA/tgbJTp+710lLeSuc89AHeP50Kumw/DMsNfg 53qK21bv+tu2GRM+MQmkj/2iyAdupAS6QEN+5dJVvjKV6bbcmfZCu4kLo9X6uNUKOsS0Wa0wnwiQN ChqsJrtg8lp/ZsYxLj5WIx00ruq+OIem23/pjqQV7Rq3++lVyWm0R7To/iRNJPZo74i9YoXqOnAL5 +zP1oA5q4sPhfA==; Date: Thu, 27 Mar 2025 19:46:34 +0200 Message-Id: <86msd6bc3p.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Elijah Gabe =?utf-8?Q?P=C3=A9rez?= <eg642616@HIDDEN> In-Reply-To: <87zfh6z9g1.fsf@HIDDEN> (message from Elijah Gabe =?utf-8?Q?P=C3=A9rez?= on Thu, 27 Mar 2025 11:10:06 -0600) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <86a596d7l5.fsf@HIDDEN> <CACnP4NK+Zqgg3C3zFyBFi=dXVn=w-SOvtq9iJjfwbiP0K10-Hw@HIDDEN> <86y0wqbgwz.fsf@HIDDEN> <87zfh6z9g1.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Elijah Gabe Pérez <eg642616@HIDDEN> > Cc: mail@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org > Date: Thu, 27 Mar 2025 11:10:06 -0600 > > But what if user prefer using a lambda instead a function? For example for a specific mode or action > from a > key binding package such as evil or meow > > Sorry, I don't understand: what lambda? Aren't all the modes you want > to catch normal minor modes with a hook? > > Not only minor mode, also functions (function symbols or anonymous ones). > for example if user wants to change cursor appearance if a text at > current cursor position have an overlay or whatever, can do it > defining a function in their config: > > (defun my/cursor-change () > (string-prefix-p " *" (buffer-name))) > > (setopt cursor-indicators-conditions `((my/cursor-change hollow "yellow"))) > > or > > (setopt cursor-indicators-conditions `((,(lambda () (string-prefix-p " *" (buffer-name))) > hollow "yellow"))) We have buffer-list-update-hook and window-configuration-change-hook, which I think should cover these.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <86y0wqbgwz.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
<875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN>
<86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN>
<86cye2d8t6.fsf@HIDDEN> <86a596d7l5.fsf@HIDDEN>
<CACnP4NK+Zqgg3C3zFyBFi=dXVn=w-SOvtq9iJjfwbiP0K10-Hw@HIDDEN>
<86y0wqbgwz.fsf@HIDDEN>
Date: Thu, 27 Mar 2025 11:10:06 -0600
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--=-=-=
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--==-=-=
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Eli Zaretskii <eliz@HIDDEN> writes:
>> From: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN>
>> Date: Thu, 27 Mar 2025 08:53:25 -0600
>> Cc: mail@HIDDEN, 77224 <at> debbugs.gnu.org,=20
>> Juri Linkov <juri@HIDDEN>
>> Eli Zaretskii <eliz@HIDDEN> writes:
>> Btw, a possibly even better way is to modify the cursor looks from the
>> hooks of the relevant commands, like overwrite-mode. If some of them
>> don't have a hook, we could add a hook. This is better because it
>> doesn't unnecessarily "punish" Emacs anywhere else, only the commands
>> that could affect the cursor.
>> But what if user prefer using a lambda instead a function? For example f=
or a specific mode or action from a
>> key binding package such as evil or meow
> Sorry, I don't understand: what lambda? Aren't all the modes you want
> to catch normal minor modes with a hook?
Not only minor mode, also functions (function symbols or anonymous ones).
for example if user wants to change cursor appearance if a text at
current cursor position have an overlay or whatever, can do it
defining a function in their config:
#+begin_src elisp
(defun my/cursor-change ()
(string-prefix-p " *" (buffer-name)))
(setopt cursor-indicators-conditions `((my/cursor-change hollow "yellow")))
#+end_src
or
#+begin_src elisp
(setopt cursor-indicators-conditions `((,(lambda () (string-prefix-p " *" (=
buffer-name)))
hollow "yellow")))
#+end_src
The current code only check if symbol is a variable or a function
symbol (since minor modes also defines a variable with same minor
mode name) or a lambda, and it must return =3Dnon-nil=3D.
--==-=-=
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
<p>
Eli Zaretskii <eliz@HIDDEN> writes:<br />
</p>
<p>
<blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0.2em;=
margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isola=
te;display: box;">
<div><blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0=
.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: =
isolate;display: box;">
<div>From: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN><br />
Date: Thu, 27 Mar 2025 08:53:25 -0600<br />
Cc: mail@HIDDEN, 77224 <at> debbugs.gnu.org,<br />
Juri Linkov <juri@HIDDEN><br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0.2em;=
margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isola=
te;display: box;">
<div><blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0=
.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: =
isolate;display: box;">
<div>Eli Zaretskii <eliz@HIDDEN> writes:<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0.2em;=
margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isola=
te;display: box;">
<div><blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0=
.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: =
isolate;display: box;">
<div>Btw, a possibly even better way is to modify the cursor looks from the=
<br />
hooks of the relevant commands, like overwrite-mode. If some of them<br />
don't have a hook, we could add a hook. This is better because it<br />
doesn't unnecessarily "punish" Emacs anywhere else, only the commands<br />
that could affect the cursor.<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0.2em;=
margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isola=
te;display: box;">
<div><blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0=
.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: =
isolate;display: box;">
<div>But what if user prefer using a lambda instead a function? For example=
for a specific mode or action from a<br />
key binding package such as evil or meow<br />
</div></blockquote>
Sorry, I don't understand: what lambda? Aren't all the modes you want<br />
to catch normal minor modes with a hook?<br />
</div></blockquote>
</p>
<p>
Not only minor mode, also functions (function symbols or anonymous ones).<b=
r />
for example if user wants to change cursor appearance if a text at<br />
current cursor position have an overlay or whatever, can do it<br />
defining a function in their config:<br />
</p>
<div class=3D"org-src-container">
<pre style=3D"color: #f8f8f2; background-color: #282a36; padding: 0.1em; bo=
rder-radius: 5px;" class=3D"src src-elisp"><span style=3D"color: #61bfff;">=
(</span><span style=3D"color: #ff79c6;">defun</span> <span style=3D"color: =
#50fa7b;">my/cursor-change</span> <span style=3D"color: #ff79c6;">()</span>
<span style=3D"color: #ff79c6;">(</span>string-prefix-p <span style=3D"co=
lor: #f1fa8c;">" *"</span> <span style=3D"color: #50fa7b;">(</span>buffer-n=
ame<span style=3D"color: #50fa7b;">)</span><span style=3D"color: #ff79c6;">=
)</span><span style=3D"color: #61bfff;">)</span>
<span style=3D"color: #61bfff;">(</span><span style=3D"color: #ff79c6;">set=
opt</span> cursor-indicators-conditions `<span style=3D"color: #ff79c6;">(<=
/span><span style=3D"color: #50fa7b;">(</span>my/cursor-change hollow <span=
style=3D"color: #f1fa8c;">"yellow"</span><span style=3D"color: #50fa7b;">)=
</span><span style=3D"color: #ff79c6;">)</span><span style=3D"color: #61bff=
f;">)</span>
</pre>
</div>
<p>
or<br />
</p>
<div class=3D"org-src-container">
<pre style=3D"color: #f8f8f2; background-color: #282a36; padding: 0.1em; bo=
rder-radius: 5px;" class=3D"src src-elisp"><span style=3D"color: #61bfff;">=
(</span><span style=3D"color: #ff79c6;">setopt</span> cursor-indicators-con=
ditions `<span style=3D"color: #ff79c6;">(</span><span style=3D"color: #50f=
a7b;">(</span>,<span style=3D"color: #bd93f9;">(</span><span style=3D"color=
: #ff79c6;">lambda</span> <span style=3D"color: #61bfff;">()</span> <span s=
tyle=3D"color: #61bfff;">(</span>string-prefix-p <span style=3D"color: #f1f=
a8c;">" *"</span> <span style=3D"color: #ff79c6;">(</span>buffer-name<span =
style=3D"color: #ff79c6;">)</span><span style=3D"color: #61bfff;">)</span><=
span style=3D"color: #bd93f9;">)</span>
hollow <span style=3D"color: #f1fa8=
c;">"yellow"</span><span style=3D"color: #50fa7b;">)</span><span style=3D"c=
olor: #ff79c6;">)</span><span style=3D"color: #61bfff;">)</span>
</pre>
</div>
<p>
The current code only check if symbol is a variable or a function<br />
symbol (since minor modes also defines a variable with same minor<br />
mode name) or a lambda, and it must return <code>non-nil</code>.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/plain
--
- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 16:56:35 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 12:56:35 2025 Received: from localhost ([127.0.0.1]:51113 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txqWw-0005io-0k for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:56:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37904) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txqWt-0005hy-Cr for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:56:31 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txqWl-0008FR-P7; Thu, 27 Mar 2025 12:56:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=8kfbPiaBz9uv83sIjKtvBAAfzbPZvxzKeIuybSLfolo=; b=KY07OtUwa+bK nugw655xZohK+PLdYpSCVXh2QShiRok1mX2zdoEUqXbXihZkmwWF3SYU2O96pRdim4YNJL9YcC0qW nvlXsOWM7BXJlutf7Ot2wcZPRCFAye8eyEBld8MIcOmD5go9fvJ8YSZYLdJh4yRGq6t3fZ1CBz7gv sT8d0KQNHdSsV/zlDtJZabsWcvzMxpCFruwddlw6uAG5IYpfcmAYjB1b7nSul27pUOKfWMFuCfNqP wvNo01kqFQ60klvquW4y99HoNzYrDO4yRoEu/4TRZQMBj8mCyjw6KpS65Bw6cPe46kXBsIIDThqyn tEJliBqjJLKcsT/FxMbTOQ==; Date: Thu, 27 Mar 2025 18:56:21 +0200 Message-Id: <86pli2befe.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <877c4aa0m8.fsf@HIDDEN> (message from Daniel Mendler on Thu, 27 Mar 2025 17:39:59 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> <877c4aa0m8.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Thu, 27 Mar 2025 17:39:59 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > post-command-hook is run by the same loop that decides that Emacs is > > idle and runs timers, so the difference in practice should be very > > small if at all. > > The `post-command-hook' is guaranteed to run after a command while the > idle timer is delayed until no new events are in the queue. No, the idle time is run immediately if there's no input. Emacs doesn't wait or delay the timer. > > Anyway, I think making the cursor change from a mode hook is a better > > solution. > > As has been mentioned, the problem is that not every scenario is covered > by hooks, while the PCH is a potentially universal solution which can > check arbitrary conditions. But if hooks work sufficiently well for most > scenarios, then why not. If there are cases that this indication supports but there's no mode hook for them, let's discuss those cases one by one and see how to solve them. I see overwrite-mode, read-only-mode, and input-method activation, all of which have hooks, AFAIR.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 16:40:13 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 12:40:12 2025 Received: from localhost ([127.0.0.1]:51073 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txqH6-0003vO-6y for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:40:12 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:34589 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1txqH2-0003p3-Ks for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:40:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=S7CASjzTyGJ5+hoYyjBAWTx6hXPwIc3E3j2BY2XgjB4=; b=NeG8sYr+y0KFd6HFaFgkFsD7wO DRv+wBdQ4KGYAeP2pXrH4Binlv9kNsN0WLuyg3i0n2XArKSgrmdcdvCNCGWGz1Oq3fMyL01SAnUsy taX64RALqCIZUe091Ma4ioVcqN13BEJAEI6TqyrET/r07TcRbIFzJ9TwVmZmRemWDd8Y=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86tt7ebfnc.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 27 Mar 2025 18:29:59 +0200") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> <86tt7ebfnc.fsf@HIDDEN> Date: Thu, 27 Mar 2025 17:39:59 +0100 Message-ID: <877c4aa0m8.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Thu, 27 Mar 2025 17:04:09 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> > I disagree that the cursor must change "immediately", in the rigorous >> > sense of that word. I think if it changes after 10 or 20 or 50 >> > milliseconds, that's "immediately" for any practical purpose. >> >> No, 50ms are not acceptable for the user if they except an immediate >> response to a key press. > > 50ms was just an example, and it is actually quite improbable to be > that large. > > post-command-hook is run by the same loop that decides that Emacs is > idle and runs timers, so the difference in practice should be very > small if at all. The `post-command-hook' is guaranteed to run after a command while the idle timer is delayed until no new events are in the queue. This is why I argue that the delay can be too large, such that it will become noticeable. >> Regarding Emacs sluggishness, the `cursor-indicators-mode' is an >> optional mode. If it increases sluggishness unnacceptably (which it >> won't), users can turn it off. > > Experience shows that many users turn on a lot of features which rely > on post-command-hook, and then complain that Emacs is slow to respond. > Telling them to turn off features they like doesn't really work. I agree that this is a problem. However in this case the PCH will not cause problems, as has also been noted by Drew and as has been shown by CUA over the years. In contrast the idle timer will cause problems. I am actually looking forward to using `cursor-indicators-mode', but if it operates with an idle timer, I don't think it will indicate the editing status reliably enough. > Anyway, I think making the cursor change from a mode hook is a better > solution. As has been mentioned, the problem is that not every scenario is covered by hooks, while the PCH is a potentially universal solution which can check arbitrary conditions. But if hooks work sufficiently well for most scenarios, then why not. I think Stefan and Juri should chime in with their experience about this, since as I've seen, they both want to replace some custom cursor code with the new mode in their configuration. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 16:30:19 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 12:30:19 2025 Received: from localhost ([127.0.0.1]:51059 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txq7W-0002jP-H4 for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:30:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60276) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txq7P-0002di-GA for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:30:15 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txq7H-0004sB-Rf; Thu, 27 Mar 2025 12:30:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=cdG6dQqrFyPHrvjwgNRpqc6ZxyLSNFvWzUQoLWz2L4Q=; b=FluXTE3d9E6m Mn6mxFFjDAeAXjLAJjlf9y3t3YP38Kkz7NsqqAITxQyXpMFyDuz8rrlok2g+7SbAeabngYJ1b6leS Ed3GU5xc2KFIItDpOBDg3nLxzo9rn6WscGjVsar6jQwnX7Sq5HvONISWaS8EN8HRP7qBW5u5btE5f Cu21xZT9Qn4NlFZvSi6lboAaK9RTu+OcLoSPH56QC3LVA/XpZJnGE3MIDk0yzJr77RafCNrJgQ5X1 C7BuzPEVLeECyu+AT0oSpcj0y1ZU8V3b4DRNUIVul/Obfn1RiCfhY0/I6XJgHt27IalFHNbC5MFYs 1tIe77RenXe2E4XqV+wnUw==; Date: Thu, 27 Mar 2025 18:29:59 +0200 Message-Id: <86tt7ebfnc.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87a596a29y.fsf@HIDDEN> (message from Daniel Mendler on Thu, 27 Mar 2025 17:04:09 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <87a596a29y.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Thu, 27 Mar 2025 17:04:09 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > I disagree that the cursor must change "immediately", in the rigorous > > sense of that word. I think if it changes after 10 or 20 or 50 > > milliseconds, that's "immediately" for any practical purpose. > > No, 50ms are not acceptable for the user if they except an immediate > response to a key press. 50ms was just an example, and it is actually quite improbable to be that large. post-command-hook is run by the same loop that decides that Emacs is idle and runs timers, so the difference in practice should be very small if at all. > Regarding Emacs sluggishness, the `cursor-indicators-mode' is an > optional mode. If it increases sluggishness unnacceptably (which it > won't), users can turn it off. Experience shows that many users turn on a lot of features which rely on post-command-hook, and then complain that Emacs is slow to respond. Telling them to turn off features they like doesn't really work. Anyway, I think making the cursor change from a mode hook is a better solution.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 16:04:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 12:04:25 2025 Received: from localhost ([127.0.0.1]:51006 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txpiQ-0007bS-Jz for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:04:25 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:53067 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1txpiM-0007Zh-I3 for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:04:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Type:MIME-Version:Message-ID:Date: References:In-Reply-To:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=tqNVSYAhp3jy8ZjzelE5xoiWFxuzfkLq8XYxG88famM=; b=Wwo28GNR69lR/IPoTw6hywWdOM 1pDC9hDLNWLlaH44+TkqYVtUyYQz1C5mTuLZd3kpGwX2H4+mnN+RUoG07E/k+PvIhZK7uOOdG85QL hcuE/85m4I/x96gFWu7kF6NGEMKznChYQ4J7aWvDK1g0CJt7edPtte00oI07ils9rlb8=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86cye2d8t6.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 27 Mar 2025 13:14:45 +0200") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> Date: Thu, 27 Mar 2025 17:04:09 +0100 Message-ID: <87a596a29y.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN >> Date: Thu, 27 Mar 2025 10:42:21 +0100 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> >> The problem with the idle timer is that it might not run immediately. >> > >> > That depends on the value of the SECS argument to run-with-idle-timer, >> > doesn't it. >> >> No, there is no guarantee that the idle timer will run soon enough after >> the given time if Emacs stays busy. > > If Emacs is busy, the post-command-hook will not run, either. When a > command exits, it return to the main loop, and unless the user types > something before that, Emacs then becomes "idle". There is a difference. When Emacs executes a command and hangs during command execution it is expected that the cursor does not update immediately. The cursor will however update after the command has finished. The commands which we talk about regarding cursor changes are usually executed quickly, like enabling some modes like `overwrite-mode'. >> > Sorry, I object to adding stuff to post-command-hook in these cases. >> > Emacs becomes very sluggish, and we should avoid that as much as we >> > can. >> >> I see your point about sluggishness and I am very careful myself to not >> enable modes which add expensive computations to the >> `post-command-hook'. Nevertheless in this case using the >> `post-command-hook' is the right thing, such that the `cursor-type' is >> changed effective immediately, as had been done before in CUA, see >> `cua--post-command-handler-1'. The computation in this case is not >> expensive. > > I disagree that the cursor must change "immediately", in the rigorous > sense of that word. I think if it changes after 10 or 20 or 50 > milliseconds, that's "immediately" for any practical purpose. No, 50ms are not acceptable for the user if they except an immediate response to a key press. I have seen bug reports to my packages where people complained about latency in the range of 10 to 20ms. The problem is also that idle timers are not bounded. If the user continues on typing, Emacs won't become idle and the cursor can change much later. This would look like a bug then. Again - CUA also used a `post-command-hook'. Why not preserve this, given that the mode is essentially extracted from CUA where it works well? I see your point about using specialized hooks though (e.g. `overwrite-mode-hook'), but this will make customization much more difficult, and for some variables there might not be a hook. Regarding Emacs sluggishness, the `cursor-indicators-mode' is an optional mode. If it increases sluggishness unnacceptably (which it won't), users can turn it off. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 16:02:51 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 12:02:51 2025 Received: from localhost ([127.0.0.1]:51002 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txpgw-0007O9-SA for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:02:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56028) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txpgs-0007ML-OY for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 12:02:49 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txpgl-0000tK-CO; Thu, 27 Mar 2025 12:02:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=eQ0A8T3tuUHH5vv5sxh+XiUZUo/KqoyVsXSAgiq6vSg=; b=ZffZNs7Xt0D0vQLOpp1e 9nzEfbc5kiF0Q+IZt1nndGdF98CLYamMwFlbQQeD30xVhkVez/77NXnMrLXfhFAV9e6Us7ykDNjBQ XVve656t9frUatqrzQMUFPgl3PwZHneciuDD4bWUjjg1s+on0+9i+aHXnWPBcxQRAf9qNOnE48Nf7 eibvcJwu7Os7ExG39znxcr+R41VzXe1x9/DlH1+1ZSmKu7c8uc+HHEVXvC2O9aUIjNI21rlzXTSF8 WnNQktRU6xe0fYVej3Pa+DbMCseMOJl6YPM9YTKtr0GQOzCg7fUAPAWFYS0KPIXCUUGtBcI3+BrAi patHfGsMKwD6Eg==; Date: Thu, 27 Mar 2025 18:02:36 +0200 Message-Id: <86y0wqbgwz.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Elijah Gabe =?utf-8?Q?P=C3=A9rez?= <eg642616@HIDDEN> In-Reply-To: <CACnP4NK+Zqgg3C3zFyBFi=dXVn=w-SOvtq9iJjfwbiP0K10-Hw@HIDDEN> (message from Elijah Gabe =?utf-8?Q?P=C3=A9rez?= on Thu, 27 Mar 2025 08:53:25 -0600) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <86a596d7l5.fsf@HIDDEN> <CACnP4NK+Zqgg3C3zFyBFi=dXVn=w-SOvtq9iJjfwbiP0K10-Hw@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: mail@HIDDEN, juri@HIDDEN, 77224 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Elijah Gabe Pérez <eg642616@HIDDEN> > Date: Thu, 27 Mar 2025 08:53:25 -0600 > Cc: mail@HIDDEN, 77224 <at> debbugs.gnu.org, > Juri Linkov <juri@HIDDEN> > > Eli Zaretskii <eliz@HIDDEN> writes: > > Btw, a possibly even better way is to modify the cursor looks from the > hooks of the relevant commands, like overwrite-mode. If some of them > don't have a hook, we could add a hook. This is better because it > doesn't unnecessarily "punish" Emacs anywhere else, only the commands > that could affect the cursor. > > But what if user prefer using a lambda instead a function? For example for a specific mode or action from a > key binding package such as evil or meow Sorry, I don't understand: what lambda? Aren't all the modes you want to catch normal minor modes with a hook? > also i don't know if buffer-read-only have a proper hook. read-only-mode does have a hook.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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Thu, 27 Mar 2025 15:45:45 +0000 From: Drew Adams <drew.adams@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN>, "mail@HIDDEN" <mail@HIDDEN> Subject: RE: [External] : bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' Thread-Topic: [External] : bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' Thread-Index: AQHbnw1eQoMma3FWQ0OswldzO6qz5LOHHQ4Q Date: Thu, 27 Mar 2025 15:45:44 +0000 Message-ID: <DS7PR10MB52326F98F2354808AD425838F3A12@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> <86a596d7l5.fsf@HIDDEN> In-Reply-To: <86a596d7l5.fsf@HIDDEN> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: DS7PR10MB5232:EE_|PH8PR10MB6315:EE_ x-ms-office365-filtering-correlation-id: f7630142-444b-4f69-32df-08dd6d466ff7 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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Nevertheless in this case using the > > > `post-command-hook' is the right thing, such that the `cursor-type' i= s > > > changed effective immediately, as had been done before in CUA, see > > > `cua--post-command-handler-1'. The computation in this case is not > > > expensive. > > > > I disagree that the cursor must change "immediately", in the rigorous > > sense of that word. I think if it changes after 10 or 20 or 50 > > milliseconds, that's "immediately" for any practical purpose. >=20 > Btw, a possibly even better way is to modify the cursor looks from the > hooks of the relevant commands, like overwrite-mode. If some of them > don't have a hook, we could add a hook. This is better because it > doesn't unnecessarily "punish" Emacs anywhere else, only the commands > that could affect the cursor. >=20 > Does this make sense? It does make sense, to me. However, FWIW (haven't read all of this thread): Based on input from Juri and others many moon ago, library `cursor-chg.el' = has used pre(post)-command-hook since 2006 to optionally change the cursor = shape for overwrite/read-only, idleness, and/or use of an input method. Min= or mode `change-cursor-mode' does all but the idleness, which is done by `c= urchg-toggle-cursor-when-idle'. I agree with the general motivation not to overuse pre(post)-command-hook, = but FWIW I haven't noticed any problems with the use made of it in this cas= e. https://www.emacswiki.org/emacs/ChangingCursorDynamically https://www.emacswiki.org/emacs/download/cursor-chg.el
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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If some of them > don't have a hook, we could add a hook. This is better because it > doesn't unnecessarily "punish" Emacs anywhere else, only the commands > that could affect the cursor. > But what if user prefer using a lambda instead a function? For example for a specific mode or action from a key binding package such as evil or meow, also i don't know if buffer-read-only have a proper hook. > --0000000000007634490631541e34 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"auto"><div><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D= "gmail_attr">Eli Zaretskii <<a href=3D"mailto:eliz@HIDDEN" target=3D"_b= lank" rel=3D"noreferrer">eliz@HIDDEN</a>> writes:</div><blockquote clas= s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad= ding-left:1ex"> Btw, a possibly even better way is to modify the cursor looks from the<br> hooks of the relevant commands, like overwrite-mode.=C2=A0 If some of them<= br> don't have a hook, we could add a hook.=C2=A0 This is better because it= <br> doesn't unnecessarily "punish" Emacs anywhere else, only the = commands<br> that could affect the cursor.<br></blockquote></div></div><div dir=3D"auto"= ><br></div><div dir=3D"auto">But what if user prefer using a lambda instead= a function? For example for a specific mode or action from a key binding p= ackage such as evil or meow, also i don't know if buffer-read-only have= a proper hook.</div><div dir=3D"auto"><div class=3D"gmail_quote"><blockquo= te class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc so= lid;padding-left:1ex"></blockquote></div></div><div dir=3D"auto"><div class= =3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8= ex;border-left:1px #ccc solid;padding-left:1ex"> </blockquote></div></div></div> --0000000000007634490631541e34--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 11:41:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 07:41:26 2025 Received: from localhost ([127.0.0.1]:47861 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txlby-00033H-0P for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 07:41:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51708) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txlbs-00032N-K4 for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 07:41:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txlbl-0000M2-Uo; Thu, 27 Mar 2025 07:41:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=s61E38v8kGhUvYGkbehDbKjxf4DWECI333URkFAAPvI=; b=p1Vp4Cy34woy K+VWr4eg+t2isml6RlLvsVHGzdcWBGkxRSdVG7xp5ksmzg6gDYG/7sTxCvgyFg5ElvEhd/G0XzUY7 mbgCrffgC5aQXerNF8iEoD+lql2W4oJDO7tZs8ba8Ob3WVYHglDjX5q0aWOyX/J/LRYkyrNOKhDdq 3/DFAaFc7zuO5D2onR0gdqg5jmQQq1yTaFtw7Sdpx79WjLwPgV7oZ/j8vMmqKJzk/xwPyhWcVTuw1 0C3iKl9rtBob6svgaCUW5hn8YkYnPqeV+10HL2AbujjxRCEp07/VBXzKiUJaIJ0FByHZn8Nb1nLGl ILtnUC+R4YtBCRSWAAzh8g==; Date: Thu, 27 Mar 2025 13:41:10 +0200 Message-Id: <86a596d7l5.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: mail@HIDDEN In-Reply-To: <86cye2d8t6.fsf@HIDDEN> (message from Eli Zaretskii on Thu, 27 Mar 2025 13:14:45 +0200) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> <86cye2d8t6.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN > Date: Thu, 27 Mar 2025 13:14:45 +0200 > From: Eli Zaretskii <eliz@HIDDEN> > > > I see your point about sluggishness and I am very careful myself to not > > enable modes which add expensive computations to the > > `post-command-hook'. Nevertheless in this case using the > > `post-command-hook' is the right thing, such that the `cursor-type' is > > changed effective immediately, as had been done before in CUA, see > > `cua--post-command-handler-1'. The computation in this case is not > > expensive. > > I disagree that the cursor must change "immediately", in the rigorous > sense of that word. I think if it changes after 10 or 20 or 50 > milliseconds, that's "immediately" for any practical purpose. Btw, a possibly even better way is to modify the cursor looks from the hooks of the relevant commands, like overwrite-mode. If some of them don't have a hook, we could add a hook. This is better because it doesn't unnecessarily "punish" Emacs anywhere else, only the commands that could affect the cursor. Does this make sense?
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 11:14:58 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 07:14:58 2025 Received: from localhost ([127.0.0.1]:47782 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txlCL-0003qc-Uv for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 07:14:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34434) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txlCI-0003pN-M5 for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 07:14:55 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txlCB-0004Yy-VC; Thu, 27 Mar 2025 07:14:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=b5bJ1yCqygWpnDQ8Zy0f85l7OqNBSAimReiII1hpNzQ=; b=n1vb2FX9v0Ea 96gDao7wgDPkS7z8HH+vm0fqQbW1fks+vhYvh6GGGLu6CbRdAj8kFBUTjvyIbwG7LzkYSbozolI9z i3mG7yG38npDkJJtgf3BGgs1qJr/kl7bpMRzm0TyupARFG8LBOh4h8uE5sLcFqJDCX2wtJetSrluF VjC9YTcgfZoJjcKQVPvn0VhTgGA6IzA1DzgZDd6CY3KGLv9EYHokG91zW77X8ElLLeiM6RJOhadRg opm2rQPjuL+vM3WLzvNW/ADcH74/1P4DCP8oHp2+EjlPjyEY6tNGlN1mLJMUnyWNJhPykw4KNeFqk rnt9PAejwXeAxVcFdQMppw==; Date: Thu, 27 Mar 2025 13:14:45 +0200 Message-Id: <86cye2d8t6.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Mendler <mail@HIDDEN> In-Reply-To: <87h63ekdxe.fsf@HIDDEN> (message from Daniel Mendler on Thu, 27 Mar 2025 10:42:21 +0100) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> <87h63ekdxe.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Mendler <mail@HIDDEN> > Cc: eg642616@HIDDEN, 77224 <at> debbugs.gnu.org, juri@HIDDEN > Date: Thu, 27 Mar 2025 10:42:21 +0100 > > Eli Zaretskii <eliz@HIDDEN> writes: > > >> The problem with the idle timer is that it might not run immediately. > > > > That depends on the value of the SECS argument to run-with-idle-timer, > > doesn't it. > > No, there is no guarantee that the idle timer will run soon enough after > the given time if Emacs stays busy. If Emacs is busy, the post-command-hook will not run, either. When a command exits, it return to the main loop, and unless the user types something before that, Emacs then becomes "idle". > > Sorry, I object to adding stuff to post-command-hook in these cases. > > Emacs becomes very sluggish, and we should avoid that as much as we > > can. > > I see your point about sluggishness and I am very careful myself to not > enable modes which add expensive computations to the > `post-command-hook'. Nevertheless in this case using the > `post-command-hook' is the right thing, such that the `cursor-type' is > changed effective immediately, as had been done before in CUA, see > `cua--post-command-handler-1'. The computation in this case is not > expensive. I disagree that the cursor must change "immediately", in the rigorous sense of that word. I think if it changes after 10 or 20 or 50 milliseconds, that's "immediately" for any practical purpose.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 27 Mar 2025 09:42:32 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 05:42:32 2025 Received: from localhost ([127.0.0.1]:47581 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txjku-0005mS-0V for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 05:42:32 -0400 Received: from server.qxqx.de ([2a01:4f8:c012:9177::1]:39307 helo=mail.qxqx.de) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <mail@HIDDEN>) id 1txjks-0005lE-6i for 77224 <at> debbugs.gnu.org; Thu, 27 Mar 2025 05:42:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=daniel-mendler.de; s=key; h=Content-Transfer-Encoding:Content-Type: MIME-Version:Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=3b2vce8KPq8hoMoKIGGRdnMviQtP3LYVEmCHxjTdf94=; b=iWa1PC1LHV9z8OMF2skU6yQHf4 rBXUHj8KHcy9+WXu/zsdZtINT3/4gfWHw3yekfcrME3piAXPxKpspWMfdEmouoNt0X3YsPBerTwAo Tep/qbxheVWAZb3cLnJoWtdUzIDSsnvW8MiuKv2riwi4sEjvFJSBa+tQTwa+4g6YQ9Ds=; From: Daniel Mendler <mail@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <86ecyidg2d.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 27 Mar 2025 10:38:02 +0200") References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN> <875xjvcn4o.fsf@HIDDEN> <877c4b81nk.fsf@HIDDEN> <86ecyidg2d.fsf@HIDDEN> Date: Thu, 27 Mar 2025 10:42:21 +0100 Message-ID: <87h63ekdxe.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN, juri@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Daniel Mendler <mail@HIDDEN> >> Cc: Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org, Juri Linkov >> <juri@HIDDEN> >> Date: Thu, 27 Mar 2025 06:48:15 +0100 >>=20 >> Elijah Gabe P=C3=A9rez <eg642616@HIDDEN> writes: >>=20 >> >> Would it be better to use an idle timer instead? post-command-hook >> >> tends to make Emacs sluggish. >> > >> > Yeah, that is that what worried me when i decided to use that hook. >> > >> > I've fixed the patch to use only idle-timer instead. >>=20 >> The problem with the idle timer is that it might not run immediately. > > That depends on the value of the SECS argument to run-with-idle-timer, > doesn't it. No, there is no guarantee that the idle timer will run soon enough after the given time if Emacs stays busy. >> However when the user changes the input method, overwrite mode or >> similar, the users expects that the cursor reflects the change >> immediately after the last key press and does not lag behind. Therefore >> I think there is no alternative to the `post-command-hook'. It seems to >> me that only a bunch of mode variables are checked and then >> `cursor-type' is set. In CUA the cursor indicator is also updated in the >> `post-command-hook'. So this should not be too costly? > > Sorry, I object to adding stuff to post-command-hook in these cases. > Emacs becomes very sluggish, and we should avoid that as much as we > can. I see your point about sluggishness and I am very careful myself to not enable modes which add expensive computations to the `post-command-hook'. Nevertheless in this case using the `post-command-hook' is the right thing, such that the `cursor-type' is changed effective immediately, as had been done before in CUA, see `cua--post-command-handler-1'. The computation in this case is not expensive. Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: Daniel Mendler <mail@HIDDEN>
To: Elijah Gabe =?utf-8?Q?P=C3=A9rez?= <eg642616@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <875xjvcn4o.fsf@HIDDEN> ("Elijah Gabe =?utf-8?Q?P=C3=A9rez?=
=?utf-8?Q?=22's?= message of "Wed, 26 Mar 2025 18:50:47 -0600")
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
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Date: Thu, 27 Mar 2025 06:48:15 +0100
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Elijah Gabe P=C3=A9rez <eg642616@HIDDEN> writes:
> Eli Zaretskii <eliz@HIDDEN> writes:
>
>>> From: Juri Linkov <juri@HIDDEN>
>>> Cc: Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org
>>> Date: Wed, 26 Mar 2025 09:58:06 +0200
>
>>> > I've updated the patch following Juri suggestions.
>>> > Now all the conditions are inside a single defcustom.
>
>>> Thanks! I tested that everything works nicely.
>>> There is only one small problem for repeat-mode:
>
>>> > + (add-hook 'post-command-hook #'cursor-indicators--update-ind=
ications)
>
>>> It would be better to use a large value DEPTH for add-hook
>>> to add the hook to the end. The problem is that repeat-mode
>>> also uses the same hook 'post-command-hook'. So the cursor
>>> indication hook should be called afterwards as the last hook.
>
>> Would it be better to use an idle timer instead? post-command-hook
>> tends to make Emacs sluggish.
>
> Yeah, that is that what worried me when i decided to use that hook.
>
> I've fixed the patch to use only idle-timer instead.
The problem with the idle timer is that it might not run immediately.
However when the user changes the input method, overwrite mode or
similar, the users expects that the cursor reflects the change
immediately after the last key press and does not lag behind. Therefore
I think there is no alternative to the `post-command-hook'. It seems to
me that only a bunch of mode variables are checked and then
`cursor-type' is set. In CUA the cursor indicator is also updated in the
`post-command-hook'. So this should not be too costly?
Daniel
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <875xjvcn4o.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
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Date: Wed, 26 Mar 2025 20:52:15 -0600
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I forgot to update commit message properly.
Sending fixed patch.
--==-=-=
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<p>
I forgot to update commit message properly.<br />
Sending fixed patch.<br />
</p>
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--=-=-=
Content-Type: text/x-patch; charset=utf-8
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filename=0001-New-package-cursor-indicators-mode-Bug-77224.patch
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From 09400072236d8297b2cf8af644bfeeaa8c63593e Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New package 'cursor-indicators-mode' (Bug#77224)
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only.
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document new package.
* lisp/cursor-indicators.el: New file.
---
etc/NEWS | 10 +++
lisp/cursor-indicators.el | 167 ++++++++++++++++++++++++++++++++++++++
2 files changed, 177 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..2745d467722 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,16 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New package 'cursor-indicators-mode'
+This provides a new minor mode, 'cursor-indicators-mode'.
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states according to 'cursor-indicators-conditions'.
+The mode have cursor indicators out the box for:
+- Overwrite mode
+- Read-only buffers
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..c9122ae864b
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,167 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Version: 1.0.0
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Package-Requires: ((emacs "26.1") (compat "30"))
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package allows changes cursor appearance (color and/or type) to
+;; indicate different buffer states such as if current buffer is
+;; read-only or if overwrite mode is currently active.
+;;
+;; Usage:
+;; For use this mode enable: cursor-indicators-mode.
+;; By default it will set cursor color if overwrite mode is currently
+;; active, if buffer is read-only or if input method is active.
+;;
+;; To change this behavior customize `cursor-indicators-conditions'.
+;; For example, change cursor type to bar when there is a region active:
+;; (setopt cursor-indicators-conditions '((use-region-p . bar)))
+;; Or change both cursor color and type when current buffer have a
+;; specific name:
+;; (setopt cursor-indicators-conditions `((,(lambda () (string-prefix-p " =
*" (buffer-name)))
+;; hollow "yellow")))
+
+;;; Code:
+(require 'map)
+(require 'compat)
+
+;;; User options
+
+(defcustom cursor-indicators-conditions
+ '((overwrite-mode . "red")
+ (buffer-read-only . "green")
+ (current-input-method . "blue"))
+ "Alist of conditions to which cursor should change its appearence.
+Only used when `cursor-indicators-mode' is enabled.
+
+Each element is an alist entry in one of these forms:
+ (CONDITION . COLOR) Change cursor color
+ (CONDITION . TYPE) Change cursor type
+ (CONDITION TYPE COLOR) Change cursor color and type
+
+CONDITION must be a function (without arguments) or a variable that
+must return non-nil. If variable shares name with a function,
+the variable will be used instead.
+COLOR is a string specifying the cursor color.
+TYPE specifies cursor type.
+
+Valid cursor types are:
+ `box' - Filled box
+ `bar' - Vertical bar
+ `hbar' - Horizontal bar
+ `hollow' - Hollow box
+
+Each element in this alist takes predominance according to its order.
+
+If none of the conditions return non-nil, the cursor will use default
+cursor type and color."
+ :group 'cursor
+ :version "31.1"
+ :type '(alist :key-type
+ (choice :tag "Condition"
+ (const :tag "Overwrite mode" overwrite-mode)
+ (const :tag "Read-only mode" buffer-read-only)
+ (const :tag "Repeat mode" repeat-in-progress)
+ (const :tag "Activated input method" current-input=
-method)
+ ;; User-defined conditions
+ (function :tag "Variable")
+ (variable :tag "Function"))
+ :value-type
+ (choice
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (group :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color")))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+(defvar cursor-indicators--idle-timer nil)
+
+(defun cursor-indicators--change-cursor (key val)
+ "Helper function to `cursor-indicators--update-indications'."
+ ;; Check if KEY is non-nil
+ (when (or (and (symbolp key) (boundp key) (symbol-value key))
+ (and (interpreted-function-p key) (funcall key))
+ (and (functionp key) (symbolp key) (not (boundp key)) (funcall=
key)))
+ (cond
+ ;; Set cursor color
+ ((and (stringp val) (not (equal val (frame-parameter nil 'cursor-colo=
r))))
+ (set-cursor-color val)
+ (setq-local cursor-type (default-value 'cursor-type))) ; Set to defa=
ult cursor type
+ ;; Set cursor type
+ ((and (symbolp val) (not (eq val (default-value 'cursor-type))))
+ (setq-local cursor-type val)
+ (set-cursor-color cursor-indicators--default-cursor-color)) ; Set to=
default cursor color
+ ;; Set cursor color and type
+ ((consp val)
+ (let ((type (car val))
+ (color (cadr val)))
+ (when (and (symbolp type) (not (eq type (default-value 'cursor-typ=
e)))
+ (stringp color) (not (equal color (frame-parameter nil =
'cursor-color))))
+ (set-cursor-color color)
+ (setq-local cursor-type type)))))
+ ;; And exit from loop.
+ (throw 'c-i-exit t)))
+
+(defun cursor-indicators--update-indications ()
+ ;; C-I-EXIT is used here for exit from loop.
+ (when (and cursor-type
+ (not (catch 'c-i-exit (map-do #'cursor-indicators--change-cur=
sor cursor-indicators-conditions))))
+ (setq-local cursor-type (default-value 'cursor-type))
+ (set-cursor-color cursor-indicators--default-cursor-color)))
+
+(defun cursor-indicators--remove-idle-timer ()
+ "Stop and Remove idle time set."
+ (when cursor-indicators--idle-timer
+ (cancel-timer cursor-indicators--idle-timer)
+ (setq cursor-indicators--idle-timer nil)))
+
+(defvar cursor-indicators-idle-time 0.1
+ "Time used for set an idle-timer.")
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+different buffer states."
+ :group 'cursor
+ :version "31.1"
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (cursor-indicators--remove-idle-timer)
+ (setq cursor-indicators--idle-timer
+ (run-with-idle-timer cursor-indicators-idle-time t
+ #'cursor-indicators--update-indications=
)))
+ (cursor-indicators--remove-idle-timer)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <8634f0dkhq.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
<86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN>
<875xjwyzvt.fsf@HIDDEN> <8634f0dkhq.fsf@HIDDEN>
Date: Wed, 26 Mar 2025 18:50:47 -0600
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Eli Zaretskii <eliz@HIDDEN> writes:
>> From: Juri Linkov <juri@HIDDEN>
>> Cc: Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org
>> Date: Wed, 26 Mar 2025 09:58:06 +0200
>> > I've updated the patch following Juri suggestions.
>> > Now all the conditions are inside a single defcustom.
>> Thanks! I tested that everything works nicely.
>> There is only one small problem for repeat-mode:
>> > + (add-hook 'post-command-hook #'cursor-indicators--update-indications)
>> It would be better to use a large value DEPTH for add-hook
>> to add the hook to the end. The problem is that repeat-mode
>> also uses the same hook 'post-command-hook'. So the cursor
>> indication hook should be called afterwards as the last hook.
> Would it be better to use an idle timer instead? post-command-hook
> tends to make Emacs sluggish.
Yeah, that is that what worried me when i decided to use that hook.
I've fixed the patch to use only idle-timer instead.
--==-=-=
Content-Type: text/html
<p>
Eli Zaretskii <eliz@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>From: Juri Linkov <juri@HIDDEN><br />
Cc: Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org<br />
Date: Wed, 26 Mar 2025 09:58:06 +0200<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>I've updated the patch following Juri suggestions.<br />
Now all the conditions are inside a single defcustom.<br />
</div></blockquote>
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Thanks! I tested that everything works nicely.<br />
There is only one small problem for repeat-mode:<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>+ (add-hook 'post-command-hook #'cursor-indicators–update-indications)<br />
</div></blockquote>
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>It would be better to use a large value DEPTH for add-hook<br />
to add the hook to the end. The problem is that repeat-mode<br />
also uses the same hook 'post-command-hook'. So the cursor<br />
indication hook should be called afterwards as the last hook.<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Would it be better to use an idle timer instead? post-command-hook<br />
tends to make Emacs sluggish.<br />
</div></blockquote>
</p>
<p>
Yeah, that is that what worried me when i decided to use that hook.<br />
</p>
<p>
I've fixed the patch to use only idle-timer instead.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/x-patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-minor-mode-cursor-indicators-mode.patch
Content-Transfer-Encoding: quoted-printable
From 03099d0bfe4f2e56444973d9eb1c93ec7896465d Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only. (Bug#77224)
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document changes.
* lisp/cursor-indicators.el
(cursor-indicators-conditions): New user option.
(cursor-indicators--default-cursor-color)
(cursor-indicators--idle-timer)
(cursor-indicators-idle-time): New use internal variables.
(cursor-indicators--update-indications)
(cursor-indicators--remove-idle-timer)
(cursor-indicators--change-cursor): New use internal functions.
(cursor-indicators-mode): New minor mode definition.
---
etc/NEWS | 9 +++
lisp/cursor-indicators.el | 153 ++++++++++++++++++++++++++++++++++++++
2 files changed, 162 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..e87afc8c1b6 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,15 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New minor mode 'cursor-indicators-mode'
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states according to 'cursor-indicators-conditions'.
+The mode have cursor indicators out the box for:
+- Overwrite mode
+- Read-only buffers
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..64db160f390
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,153 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Version: 1.0.0
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Package-Requires: ((emacs "26.1") (compat "30.0.1.0"))
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package changes cursor appearance (color and/or type) to indicate
+;; different buffer states.
+
+;;; Code:
+(require 'map)
+(require 'compat)
+
+;;; User options
+
+(defcustom cursor-indicators-conditions
+ '((overwrite-mode . "red")
+ (buffer-read-only . "green")
+ (current-input-method . "blue"))
+ "Alist of conditions to which cursor should change its appearence.
+Only used when `cursor-indicators-mode' is enabled.
+
+Each element is an alist entry in one of these forms:
+ (CONDITION . COLOR) Change cursor color
+ (CONDITION . TYPE) Change cursor type
+ (CONDITION TYPE COLOR) Change cursor color and type
+
+CONDITION must be a function (without arguments) or a variable that
+must return non-nil.
+COLOR is a string specifying the cursor color.
+TYPE specifies cursor type.
+
+Colors can be any valid color name or hex RGB value.
+Valid cursor types are:
+ `box' - Filled box
+ `bar' - Vertical bar
+ `hbar' - Horizontal bar
+ `hollow' - Hollow box
+
+Each element in this alist takes predominance according to its order.
+
+If none of the conditions return non-nil, the cursor will use default
+cursor type and color."
+ :group 'cursor
+ :version "31.1"
+ :type '(alist :key-type
+ (choice :tag "Condition"
+ (const :tag "Overwrite mode" overwrite-mode)
+ (const :tag "Read-only mode" buffer-read-only)
+ (const :tag "Repeat mode" repeat-in-progress)
+ (const :tag "Activated input method" current-input=
-method)
+ ;; User-defined conditions
+ (function :tag "Variable")
+ (variable :tag "Function"))
+ :value-type
+ (choice
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (group :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color")))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+(defvar cursor-indicators--idle-timer nil)
+
+(defun cursor-indicators--change-cursor (key val)
+ "Helper function to `cursor-indicators--update-indications'."
+ ;; Check if KEY is non-nil
+ (when (or (and (symbolp key) (boundp key) (symbol-value key))
+ (and (interpreted-function-p key) (funcall key))
+ (and (functionp key) (symbolp key) (not (boundp key)) (funcall=
key)))
+ (cond
+ ;; Set cursor color
+ ((and (stringp val) (not (equal val (frame-parameter nil 'cursor-colo=
r))))
+ (set-cursor-color val)
+ (setq-local cursor-type (default-value 'cursor-type))) ; Set to defa=
ult cursor type
+ ;; Set cursor type
+ ((and (symbolp val) (not (eq val (default-value 'cursor-type))))
+ (setq-local cursor-type val)
+ (set-cursor-color cursor-indicators--default-cursor-color)) ; Set to=
default cursor color
+ ;; Set cursor color and type
+ ((consp val)
+ (let ((type (car val))
+ (color (cadr val)))
+ (when (and (symbolp type) (not (eq type (default-value 'cursor-typ=
e)))
+ (stringp color) (not (equal color (frame-parameter nil =
'cursor-color))))
+ (set-cursor-color color)
+ (setq-local cursor-type type)))))
+ ;; And exit from loop.
+ (throw 'c-i-exit t)))
+
+(defun cursor-indicators--update-indications ()
+ ;; C-I-EXIT is used here for exit from loop.
+ (when (and cursor-type
+ (not (catch 'c-i-exit (map-do #'cursor-indicators--change-cur=
sor cursor-indicators-conditions))))
+ (setq-local cursor-type (default-value 'cursor-type))
+ (set-cursor-color cursor-indicators--default-cursor-color)))
+
+(defun cursor-indicators--remove-idle-timer ()
+ "Stop and Remove idle time set."
+ (when cursor-indicators--idle-timer
+ (cancel-timer cursor-indicators--idle-timer)
+ (setq cursor-indicators--idle-timer nil)))
+
+(defvar cursor-indicators-idle-time 0.1
+ "Time used for set an idle-timer.")
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+different buffer states."
+ :group 'cursor
+ :version "31.1"
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (cursor-indicators--remove-idle-timer)
+ (setq cursor-indicators--idle-timer
+ (run-with-idle-timer cursor-indicators-idle-time t
+ #'cursor-indicators--update-indications=
)))
+ (cursor-indicators--remove-idle-timer)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
--=-=-=
Content-Type: text/plain
--
- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 26 Mar 2025 12:50:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Mar 26 08:50:27 2025 Received: from localhost ([127.0.0.1]:41978 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txQDD-0004Vi-8x for submit <at> debbugs.gnu.org; Wed, 26 Mar 2025 08:50:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51862) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1txQD9-0004VU-Pf for 77224 <at> debbugs.gnu.org; Wed, 26 Mar 2025 08:50:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1txQD4-0002HQ-0j; Wed, 26 Mar 2025 08:50:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=0CLpxbDVsbakKuoz6Xcu8YL0g2M7kLTQks86uV5xVjw=; b=Hm+4iVtcZmM9 V8hPBST2XUdoysGC1DF56HDk91DfMJB7dvOVhqfYLWjZbncbq+wCbZGYKI9+xLJ6SdSKp/q3YEDbg RekqtvwSFayWy29SJX2Qd+MpoU3m7/8wfn3dR+SAu4dDCKcLzoJ58ilWqsjL9dcv2CTbDaRcM+NUy MJR0lS4cB7rdkjFTY7rlZxKDoL2Jj2AdVEaKTV/Dp/6kIBZiRMabsBQ5xhfX2JDNf/vx4IO3aRnQB jsXdfDDAlaGaoyxADng7gbb6YPTzcBV++W05roREz1UUt68qCJtLtLDMGVk9713c4WcoR7mPrG3jn jQjMSSfpppC8z/JRjoyG/A==; Date: Wed, 26 Mar 2025 14:50:09 +0200 Message-Id: <8634f0dkhq.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Juri Linkov <juri@HIDDEN> In-Reply-To: <875xjwyzvt.fsf@HIDDEN> (message from Juri Linkov on Wed, 26 Mar 2025 09:58:06 +0200) Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> <875xjwyzvt.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, eg642616@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Juri Linkov <juri@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 77224 <at> debbugs.gnu.org > Date: Wed, 26 Mar 2025 09:58:06 +0200 > > > I've updated the patch following Juri suggestions. > > Now all the conditions are inside a single defcustom. > > Thanks! I tested that everything works nicely. > There is only one small problem for repeat-mode: > > > + (add-hook 'post-command-hook #'cursor-indicators--update-indications) > > It would be better to use a large value DEPTH for add-hook > to add the hook to the end. The problem is that repeat-mode > also uses the same hook 'post-command-hook'. So the cursor > indication hook should be called afterwards as the last hook. Would it be better to use an idle timer instead? post-command-hook tends to make Emacs sluggish.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at 77224) by debbugs.gnu.org; 26 Mar 2025 08:16:23 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Mar 26 04:16:23 2025 Received: from localhost ([127.0.0.1]:41200 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txLvy-0004Ie-PP for submit <at> debbugs.gnu.org; Wed, 26 Mar 2025 04:16:23 -0400 Received: from relay9-d.mail.gandi.net ([217.70.183.199]:35069) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <juri@HIDDEN>) id 1txLvs-0004IF-Og for 77224 <at> debbugs.gnu.org; Wed, 26 Mar 2025 04:16:20 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id A016A443E1; Wed, 26 Mar 2025 08:16:08 +0000 (UTC) From: Juri Linkov <juri@HIDDEN> To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' In-Reply-To: <87o6xobdcc.fsf@HIDDEN> Organization: LINKOV.NET References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <86o6xpe2cx.fsf@HIDDEN> <87o6xobdcc.fsf@HIDDEN> Date: Wed, 26 Mar 2025 09:58:06 +0200 Message-ID: <875xjwyzvt.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/31.0.50 (x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdduieehtddvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjohhffffkfgggtgesthdtredttdertdenucfhrhhomheplfhurhhiucfnihhnkhhovhcuoehjuhhriheslhhinhhkohhvrdhnvghtqeenucggtffrrghtthgvrhhnpeffgeetfeevlefhleejfeeuheeiudeitdffhfdutdekfeffgffhveehteegueekheenucfkphepledurdduvdelrddutdehrdduudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledurdduvdelrddutdehrdduudejpdhhvghlohepmhgrihhlrdhgrghnughirdhnvghtpdhmrghilhhfrhhomhepjhhurhhisehlihhnkhhovhdrnhgvthdpnhgspghrtghpthhtohepfedprhgtphhtthhopeejjedvvdegseguvggssghughhsrdhgnhhurdhorhhgpdhrtghpthhtohepvghlihiisehgnhhurdhorhhgpdhrtghpthhtohepvghgieegvdeiudeisehgmhgrihhlrdgtohhm X-GND-Sasl: juri@HIDDEN X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 77224 Cc: 77224 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) > I've updated the patch following Juri suggestions. > Now all the conditions are inside a single defcustom. Thanks! I tested that everything works nicely. There is only one small problem for repeat-mode: > + (add-hook 'post-command-hook #'cursor-indicators--update-indications) It would be better to use a large value DEPTH for add-hook to add the hook to the end. The problem is that repeat-mode also uses the same hook 'post-command-hook'. So the cursor indication hook should be called afterwards as the last hook.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Rudolf Schlatte <rudi@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <m2h63hwnqf.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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Date: Tue, 25 Mar 2025 23:00:56 -0600
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Rudolf Schlatte <rudi@HIDDEN> writes:
> Juri Linkov <juri@HIDDEN> writes:
>>> +*** New minor mode 'cursor-indicators-mode'
>>> +This mode changes cursor appearance (color and/or type) to indicate
>>> +different buffer states. This mode have cursor indicators for:
>>> +- Overwrite mode
>>> +- Read-only buffers
>>> +- Repeat mode
>>> +- Input method activation
>> What if users want to add more conditions?
>> Could you try to create only one defcustom that
>> contains a list of default conditions
>> plus a possible user-defined conditions.
>> For example:
>> #+begin_src emacs-lisp
>> (defcustom cursor-indicators nil
>> :type `(alist :key-type
>> (choice :tag "Condition"
>> (const :tag "Overwrite mode" overwrite)
>> (const :tag "Read-only mode" read-only)
>> (const :tag "Repeat mode" repeat-in-progress)
>> (const :tag "Activated input method" input-method)
>> (function :tag "Matcher function")) ;; User-defined condition
>> :value-type
>> (choice
>> (const :tag "None (do not change cursor)" nil)
>> (color :tag "Color")
>> (choice :tag "Type"
>> (const :tag "Filled box" box)
>> (const :tag "Vertical bar" bar)
>> (const :tag "Horizontal bar" hbar)
>> (const :tag "Hollow box" hollow))
>> (cons :tag "Color and Type"
>> (choice :tag "Type"
>> (const :tag "Filled box" box)
>> (const :tag "Vertical bar" bar)
>> (const :tag "Horizontal bar" hbar)
>> (const :tag "Hollow box" hollow))
>> (color :tag "Color")))))
>> #+end_src
>> Then I could replace:
>> #+begin_src emacs-lisp
>> (defun my-change-cursor (&rest _)
>> "Change cursor color and type depending on insertion mode and input method."
>> (set-cursor-color
>> (cond (repeat-in-progress "blue")
>> (current-input-method "red3")
>> (t "black")))
>> (setq-default cursor-type
>> (cond (overwrite-mode 'box)
>> (t 'bar))))
>> #+end_src
>> with just
>> #+begin_src emacs-lisp
>> (setopt cursor-indicators '((repeat-in-progress "blue")
>> (current-input-method "red3")
>> (overwrite-mode 'box)
>> (default 'bar)))
>> #+end_src
> I set the following hooks, which makes the cursor unobtrusive while I'm
> selecting text (C-SPC then moving cursor). Could this also fit in the
> above framework?
> (deactivate-mark-hook . (lambda () (setq cursor-type t)))
> (activate-mark-hook . (lambda () (setq cursor-type 'bar)))
Yeah, you can set it as something like this.
#+begin_src elisp
(setopt cursor-indicators-conditions '((use-region-p . "purple")))
#+end_src
--==-=-=
Content-Type: text/html
<p>
Rudolf Schlatte <rudi@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Juri Linkov <juri@HIDDEN> writes:<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>+*** New minor mode 'cursor-indicators-mode'<br />
+This mode changes cursor appearance (color and/or type) to indicate<br />
+different buffer states. This mode have cursor indicators for:<br />
+- Overwrite mode<br />
+- Read-only buffers<br />
+- Repeat mode<br />
+- Input method activation<br />
</div></blockquote>
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>What if users want to add more conditions?<br />
Could you try to create only one defcustom that<br />
contains a list of default conditions<br />
plus a possible user-defined conditions.<br />
For example:<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>#+begin<sub>src</sub> emacs-lisp<br />
(defcustom cursor-indicators nil<br />
:type `(alist :key-type<br />
(choice :tag "Condition"<br />
(const :tag "Overwrite mode" overwrite)<br />
(const :tag "Read-only mode" read-only)<br />
(const :tag "Repeat mode" repeat-in-progress)<br />
(const :tag "Activated input method" input-method)<br />
(function :tag "Matcher function")) ;; User-defined condition<br />
:value-type<br />
(choice<br />
(const :tag "None (do not change cursor)" nil)<br />
(color :tag "Color")<br />
(choice :tag "Type"<br />
(const :tag "Filled box" box)<br />
(const :tag "Vertical bar" bar)<br />
(const :tag "Horizontal bar" hbar)<br />
(const :tag "Hollow box" hollow))<br />
(cons :tag "Color and Type"<br />
(choice :tag "Type"<br />
(const :tag "Filled box" box)<br />
(const :tag "Vertical bar" bar)<br />
(const :tag "Horizontal bar" hbar)<br />
(const :tag "Hollow box" hollow))<br />
(color :tag "Color")))))<br />
#+end<sub>src</sub><br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Then I could replace:<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>#+begin<sub>src</sub> emacs-lisp<br />
(defun my-change-cursor (&rest _)<br />
"Change cursor color and type depending on insertion mode and input method."<br />
(set-cursor-color<br />
(cond (repeat-in-progress "blue")<br />
(current-input-method "red3")<br />
(t "black")))<br />
(setq-default cursor-type<br />
(cond (overwrite-mode 'box)<br />
(t 'bar))))<br />
#+end<sub>src</sub><br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>with just<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>#+begin<sub>src</sub> emacs-lisp<br />
(setopt cursor-indicators '((repeat-in-progress "blue")<br />
(current-input-method "red3")<br />
(overwrite-mode 'box)<br />
(default 'bar)))<br />
#+end<sub>src</sub><br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>I set the following hooks, which makes the cursor unobtrusive while I'm<br />
selecting text (C-SPC then moving cursor). Could this also fit in the<br />
above framework?<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>(deactivate-mark-hook . (lambda () (setq cursor-type t)))<br />
(activate-mark-hook . (lambda () (setq cursor-type 'bar)))<br />
</div></blockquote>
</p>
<p>
Yeah, you can set it as something like this.<br />
</p>
<div class="org-src-container">
<pre style="color: #FCFCFA; background-color: #2D2A2E; padding: 0.1em; border-radius: 5px;" class="src src-elisp"><span style="color: #AB9DF2;">(</span><span style="color: #FF6188;">setopt</span> cursor-indicators-conditions '<span style="color: #78DCE8;">(</span><span style="color: #FC9867;">(</span>use-region-p . <span style="color: #FFD866;">"⏺purple"</span><span style="color: #FC9867;">)</span><span style="color: #78DCE8;">)</span><span style="color: #AB9DF2;">)</span>
</pre>
</div>
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
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I've updated the patch following Juri suggestions.
Now all the conditions are inside a single =defcustom=.
I've added only basic colors that a basic TTY can support, and a
=Package-Requires= tag in case this package should also be included in
ELPA.
This version now can handle functions as conditions (lambdas and function
symbols).
--==-=-=
Content-Type: text/html
<p>
I've updated the patch following Juri suggestions.<br />
Now all the conditions are inside a single <code>defcustom</code>.<br />
</p>
<p>
I've added only basic colors that a basic TTY can support, and a<br />
<code>Package-Requires</code> tag in case this package should also be included in<br />
ELPA.<br />
</p>
<p>
This version now can handle functions as conditions (lambdas and function<br />
symbols).<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/x-patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-minor-mode-cursor-indicators-mode.patch
Content-Transfer-Encoding: quoted-printable
From 2d89262880a47628cb47d803cedc6f04fd1f70d4 Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only. (Bug#77224)
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document changes.
* lisp/cursor-indicators.el
(cursor-indicators-conditions): New user option.
(cursor-indicators--default-cursor-color): New use internal variable.
(cursor-indicators--update-indications)
(cursor-indicators--change-cursor): New use internal function.
(cursor-indicators-mode): New minor mode definition.
---
etc/NEWS | 9 +++
lisp/cursor-indicators.el | 139 ++++++++++++++++++++++++++++++++++++++
2 files changed, 148 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..e87afc8c1b6 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,15 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New minor mode 'cursor-indicators-mode'
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states according to 'cursor-indicators-conditions'.
+The mode have cursor indicators out the box for:
+- Overwrite mode
+- Read-only buffers
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..bbd33e7c634
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,139 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Version: 1.0.0
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Package-Requires: ((emacs "26.1"))
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package changes cursor appearance (color and/or type) to indicate
+;; different buffer states.
+
+;;; Code:
+(require 'map)
+
+;;; User options
+
+(defcustom cursor-indicators-conditions
+ '((overwrite-mode . box)
+ (buffer-read-only . "green")
+ (current-input-method . "blue"))
+ "Alist of conditions to which cursor should change its appearence.
+Only used when `cursor-indicators-mode' is enabled.
+
+Each element is an alist entry in one of these forms:
+ (CONDITION . COLOR) Change cursor color
+ (CONDITION . TYPE) Change cursor type
+ (CONDITION TYPE COLOR) Change cursor color and type
+
+CONDITION must be a function (without arguments) or a variable that
+must return non-nil.
+COLOR is a string specifying the cursor color.
+TYPE specifies cursor type.
+
+Colors can be any valid color name or hex RGB value.
+Valid cursor types are:
+ `box' - Filled box
+ `bar' - Vertical bar
+ `hbar' - Horizontal bar
+ `hollow' - Hollow box
+
+Each element in this alist takes predominance according to its order.
+
+If none of the conditions return non-nil, the cursor will use default
+cursor type and color."
+ :group 'cursor
+ :version "31.1"
+ :type '(alist :key-type
+ (choice :tag "Condition"
+ (const :tag "Overwrite mode" overwrite-mode)
+ (const :tag "Read-only mode" buffer-read-only)
+ (const :tag "Repeat mode" repeat-in-progress)
+ (const :tag "Activated input method" current-input=
-method)
+ ;; User-defined conditions
+ (function :tag "Variable")
+ (variable :tag "Function"))
+ :value-type
+ (choice
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (group :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color")))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+
+(defun cursor-indicators--change-cursor (key val)
+ ;; Check if KEY is non-nil
+ (when (or (and (symbolp key) (boundp key) (symbol-value key))
+ (and (interpreted-function-p key) (funcall key))
+ (and (functionp key) (symbolp key) (not (boundp key)) (funcall=
key)))
+ (cond
+ ;; Set cursor color
+ ((and (stringp val) (not (equal val (frame-parameter nil 'cursor-colo=
r))))
+ (set-cursor-color val)
+ (setq-local cursor-type (default-value 'cursor-type))) ; Set to defa=
ult cursor type
+ ;; Set cursor type
+ ((and (symbolp val) (not (eq val (default-value 'cursor-type))))
+ (setq-local cursor-type val)
+ (set-cursor-color cursor-indicators--default-cursor-color)) ; Set to=
default cursor color
+ ;; Set cursor color and type
+ ((consp val)
+ (let ((type (car val))
+ (color (cadr val)))
+ (when (and (symbolp type) (not (eq type (default-value 'cursor-typ=
e)))
+ (stringp color) (not (equal color (frame-parameter nil =
'cursor-color))))
+ (set-cursor-color color)
+ (setq-local cursor-type type)))))
+ ;; And exit from loop.
+ (throw 'c-i-exit t)))
+
+(defun cursor-indicators--update-indications ()
+ ;; C-I-EXIT is used here for exit from loop.
+ (when (and cursor-type
+ (not (catch 'c-i-exit (map-do #'cursor-indicators--change-cur=
sor cursor-indicators-conditions))))
+ (setq-local cursor-type (default-value 'cursor-type))
+ (set-cursor-color cursor-indicators--default-cursor-color)))
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+different buffer states."
+ :group 'cursor
+ :version "31.1"
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (add-hook 'post-command-hook #'cursor-indicators--update-indicatio=
ns)
+ (cursor-indicators--update-indications))
+ (remove-hook 'post-command-hook #'cursor-indicators--update-indication=
s)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
--=-=-=
Content-Type: text/plain
--
- E.G via GNU Emacs and Org.
--=-=-=--
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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Date: Tue, 25 Mar 2025 14:11:58 +0200
Message-Id: <86o6xpe2cx.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Elijah Gabe =?utf-8?Q?P=C3=A9rez?= <eg642616@HIDDEN>
In-Reply-To: <87ikny2rio.fsf@HIDDEN> (message from Elijah Gabe
=?utf-8?Q?P=C3=A9rez?= on Mon, 24 Mar 2025 12:49:19 -0600)
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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> Cc: 77224 <at> debbugs.gnu.org, shipmints@HIDDEN, Juri Linkov <juri@HIDDEN>
> From: Elijah Gabe Pérez <eg642616@HIDDEN>
> Date: Mon, 24 Mar 2025 12:49:19 -0600
>
> Ship Mints <shipmints@HIDDEN> writes:
>
> I think you need to update your configuration to not use tabs in lisp code–your patch is filled with tabs.
> Standard elisp is this (see emacs/.dir-locals.el for other settings):
> (emacs-lisp-mode . ((indent-tabs-mode . nil) …
>
> Yeah, i forgot to untabify the whole file.
Thanks.
> +(defcustom cursor-indicators-overwrite-indicator "red3"
Using literal color names might be problematic on terminals that don't
support enough colors, unless you are extra careful to select colors
that are supported everywhere. Alternatively, the default value could
be different for different numbers of supported colors.
Also, what happens if an Emacs session has both GUI frames (with lots
of colors) and TTY frames with a small number of colors -- does each
frame get its own color?
> + "Cursor indicator used when overwrite mode is set, if non-nil.
That "if non-nil" part can potentially confuse, because it isn't clear
whether it refers to the value of the variable or to "overwrite mode".
Better say this the other way around:
If non-nil, the cursor indication to use when overwrite mode is set.
(Note that I also slightly reworded the rest of this sentence, for
clarity.)
Suggest to make the same changes for other user options in this file.
> +(defcustom cursor-indicators-repeat-indicator "blue"
> + "Cursor indicator used when `repeat-in-progress' is non-nil.
repeat-in-progress is an obscure variable, which is also not visible
until repeat.el is loaded. Please reword this to be in user-level
terms, like "when a command is repeated due to `repeat-mode'" or
something similar.
Please also add the :version tag to each and every new defcustom.
> +(defcustom cursor-indicators-input-method-indicator "dark magenta"
> + "Cursor indicator used when input method is activated now.
^^^
What do you mean by "now"?
> +(define-minor-mode cursor-indicators-mode
> + "Change cursor type and/or face for indications.
"Change cursor type and/or face to indicate various minor modes."
> +When enabled, this mode changes the cursor appearance to indicate
> +overwrite mode or read-only buffers."
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
That is not the full list of indications.
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 25 Mar 2025 07:53:21 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Mar 25 03:53:21 2025 Received: from localhost ([127.0.0.1]:35982 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twz68-0002x4-VP for submit <at> debbugs.gnu.org; Tue, 25 Mar 2025 03:53:21 -0400 Received: from lists.gnu.org ([2001:470:142::17]:50316) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <geb-bug-gnu-emacs@HIDDEN>) id 1twz66-0002wn-RJ for submit <at> debbugs.gnu.org; Tue, 25 Mar 2025 03:53:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <geb-bug-gnu-emacs@HIDDEN>) id 1twz60-0006Q6-8F for bug-gnu-emacs@HIDDEN; Tue, 25 Mar 2025 03:53:12 -0400 Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <geb-bug-gnu-emacs@HIDDEN>) id 1twz5y-0001Pv-3Y for bug-gnu-emacs@HIDDEN; Tue, 25 Mar 2025 03:53:11 -0400 Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from <geb-bug-gnu-emacs@HIDDEN>) id 1twz5u-00074e-B7 for bug-gnu-emacs@HIDDEN; Tue, 25 Mar 2025 08:53:06 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: bug-gnu-emacs@HIDDEN From: Rudolf Schlatte <rudi@HIDDEN> Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode' Date: Tue, 25 Mar 2025 08:52:56 +0100 Message-ID: <m2h63hwnqf.fsf@HIDDEN> References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN> <875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN> <871pula7sn.fsf@HIDDEN> Mime-Version: 1.0 Content-Type: text/plain User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:sPdbSBJhMZMbp/5fSFpyt5B+a/U= Received-SPF: pass client-ip=116.202.254.214; envelope-from=geb-bug-gnu-emacs@HIDDEN; helo=ciao.gmane.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Juri Linkov <juri@HIDDEN> writes: >> +*** New minor mode 'cursor-indicators-mode' >> +This mode changes cursor appearance (color and/or type) to indicate >> +different buffer states. This mode have cursor indicators for: >> +- Overwrite mode >> +- Read-only buffers >> +- Repeat mode >> +- Input method activation > > What if users want to add more conditions? > Could you try to create only one defcustom that > contains a list of default conditions > plus a possible user-defined conditions. > For example: > > #+begin_src emacs-lisp > (defcustom cursor-indicators nil > :type `(alist :key-type > (choice :tag "Condition" > (const :tag "Overwrite mode" overwrite) > (const :tag "Read-only mode" read-only) > (const :tag "Repeat mode" repeat-in-progress) > (const :tag "Activated input method" input-method) > (function :tag "Matcher function")) ;; User-defined condition > :value-type > (choice > (const :tag "None (do not change cursor)" nil) > (color :tag "Color") > (choice :tag "Type" > (const :tag "Filled box" box) > (const :tag "Vertical bar" bar) > (const :tag "Horizontal bar" hbar) > (const :tag "Hollow box" hollow)) > (cons :tag "Color and Type" > (choice :tag "Type" > (const :tag "Filled box" box) > (const :tag "Vertical bar" bar) > (const :tag "Horizontal bar" hbar) > (const :tag "Hollow box" hollow)) > (color :tag "Color"))))) > #+end_src > > > Then I could replace: > > #+begin_src emacs-lisp > (defun my-change-cursor (&rest _) > "Change cursor color and type depending on insertion mode and input method." > (set-cursor-color > (cond (repeat-in-progress "blue") > (current-input-method "red3") > (t "black"))) > (setq-default cursor-type > (cond (overwrite-mode 'box) > (t 'bar)))) > #+end_src > > > with just > > #+begin_src emacs-lisp > (setopt cursor-indicators '((repeat-in-progress "blue") > (current-input-method "red3") > (overwrite-mode 'box) > (default 'bar))) > #+end_src I set the following hooks, which makes the cursor unobtrusive while I'm selecting text (C-SPC then moving cursor). Could this also fit in the above framework? (deactivate-mark-hook . (lambda () (setq cursor-type t))) (activate-mark-hook . (lambda () (setq cursor-type 'bar)))
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: Juri Linkov <juri@HIDDEN>
To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
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Organization: LINKOV.NET
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<875xjymh93.fsf@HIDDEN> <87ikny2rio.fsf@HIDDEN>
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> +*** New minor mode 'cursor-indicators-mode'
> +This mode changes cursor appearance (color and/or type) to indicate
> +different buffer states. This mode have cursor indicators for:
> +- Overwrite mode
> +- Read-only buffers
> +- Repeat mode
> +- Input method activation
What if users want to add more conditions?
Could you try to create only one defcustom that
contains a list of default conditions
plus a possible user-defined conditions.
For example:
#+begin_src emacs-lisp
(defcustom cursor-indicators nil
:type `(alist :key-type
(choice :tag "Condition"
(const :tag "Overwrite mode" overwrite)
(const :tag "Read-only mode" read-only)
(const :tag "Repeat mode" repeat-in-progress)
(const :tag "Activated input method" input-method)
(function :tag "Matcher function")) ;; User-defined condition
:value-type
(choice
(const :tag "None (do not change cursor)" nil)
(color :tag "Color")
(choice :tag "Type"
(const :tag "Filled box" box)
(const :tag "Vertical bar" bar)
(const :tag "Horizontal bar" hbar)
(const :tag "Hollow box" hollow))
(cons :tag "Color and Type"
(choice :tag "Type"
(const :tag "Filled box" box)
(const :tag "Vertical bar" bar)
(const :tag "Horizontal bar" hbar)
(const :tag "Hollow box" hollow))
(color :tag "Color")))))
#+end_src
Then I could replace:
#+begin_src emacs-lisp
(defun my-change-cursor (&rest _)
"Change cursor color and type depending on insertion mode and input method."
(set-cursor-color
(cond (repeat-in-progress "blue")
(current-input-method "red3")
(t "black")))
(setq-default cursor-type
(cond (overwrite-mode 'box)
(t 'bar))))
#+end_src
with just
#+begin_src emacs-lisp
(setopt cursor-indicators '((repeat-in-progress "blue")
(current-input-method "red3")
(overwrite-mode 'box)
(default 'bar)))
#+end_src
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: eg642616@HIDDEN
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <875xjymh93.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
<875xjymh93.fsf@HIDDEN>
Date: Mon, 24 Mar 2025 12:49:19 -0600
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--=-=-=
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--==-=-=
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Ship Mints <shipmints@HIDDEN> writes:
> I think you need to update your configuration to not use tabs in lisp code--your patch is filled with tabs.
> Standard elisp is this (see emacs/.dir-locals.el for other settings):
> (emacs-lisp-mode . ((indent-tabs-mode . nil) ...
Yeah, i forgot to untabify the whole file.
Sending fixed one.
--==-=-=
Content-Type: text/html
<p>
Ship Mints <shipmints@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>I think you need to update your configuration to not use tabs in lisp code–your patch is filled with tabs.<br />
Standard elisp is this (see emacs/.dir-locals.el for other settings):<br />
(emacs-lisp-mode . ((indent-tabs-mode . nil) …<br />
</div></blockquote>
</p>
<p>
Yeah, i forgot to untabify the whole file.<br />
</p>
<p>
Sending fixed one.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/x-patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-minor-mode-cursor-indicators-mode.patch
Content-Transfer-Encoding: quoted-printable
From b2e9e8e1b60c3d0f051c3c7d0bbe6af39edf2408 Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only. (Bug#77224)
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document changes.
* lisp/cursor-indicators.el
(cursor-indicators-overwrite-indicator)
(cursor-indicators-repeat-indicator)
(cursor-indicators-input-method-indicator)
(cursor-indicators-read-only-indicator): New user options.
(cursor-indicators--default-cursor-color): New use internal variable.
(cursor-indicators--update-indications): New use internal function.
(cursor-indicators-mode): New minor mode definition.
---
etc/NEWS | 9 ++
lisp/cursor-indicators.el | 185 ++++++++++++++++++++++++++++++++++++++
2 files changed, 194 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..a9fee82a29e 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,15 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New minor mode 'cursor-indicators-mode'
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states. This mode have cursor indicators for:
+- Overwrite mode
+- Read-only buffers
+- Repeat mode
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..cf778c5bfce
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,185 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Keywords:
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package changes cursor appearance (color and/or type) to indicate
+;; different buffer states.
+;;
+;; For example:
+;;
+;; The following setting will use a YELLOW cursor in overwrite mode in rea=
d-write
+;; buffers, and a GREEN cursor in read-only buffers:
+;;
+;; (setq cursor-indicators-overwrite-indicator "yellow")
+;; (setq cursor-indicators-read-only-indicator "green")
+
+
+;;; Code:
+
+;;; User options
+(defcustom cursor-indicators-overwrite-indicator "red3"
+ "Cursor indicator used when overwrite mode is set, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-read-only-indicator "darkgreen"
+ "Cursor indicator used in read-only buffers, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-repeat-indicator "blue"
+ "Cursor indicator used when `repeat-in-progress' is non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-input-method-indicator "dark magenta"
+ "Cursor indicator used when input method is activated now.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+
+(defun cursor-indicators--update-indications (&optional cursor-color)
+ (let* ((cursor
+ (or
+ ;; CURSOR-COLOR is intended to be used by the user in an advice=
-add
+ cursor-color
+ ;; XXX: global mark?
+ ;; (and cua--global-mark-active cursor-indicators-global-mark-c=
olor)
+ (and buffer-read-only cursor-indicators-read-only-indicator)
+ (and overwrite-mode cursor-indicators-overwrite-indicator)
+ (and (bound-and-true-p repeat-in-progress) cursor-indicators-re=
peat-indicator)
+ (and (bound-and-true-p current-input-method) cursor-indicators-=
input-method-indicator)
+ (cons (default-value 'cursor-type)
+ cursor-indicators--default-cursor-color)))
+ (color (if (consp cursor) (cdr cursor) cursor))
+ (type (if (consp cursor) (car cursor) cursor)))
+ (if (and color
+ (stringp color)
+ (not (equal color (frame-parameter nil 'cursor-color))))
+ (set-cursor-color color))
+ (if (and type
+ (symbolp type)
+ (not (eq type (default-value 'cursor-type))))
+ (setq-local cursor-type type))))
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+overwrite mode or read-only buffers."
+ :group 'cursor
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (add-hook 'post-command-hook #'cursor-indicators--update-indicatio=
ns)
+ (cursor-indicators--update-indications))
+ (remove-hook 'post-command-hook #'cursor-indicators--update-indication=
s)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Juri Linkov <juri@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <87o6xq6fud.fsf@HIDDEN>
References: <87iknzxski.fsf@HIDDEN> <87o6xq6fud.fsf@HIDDEN>
Date: Mon, 24 Mar 2025 12:10:48 -0600
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--==-=-=
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Juri Linkov <juri@HIDDEN> writes:
>> FWIW, I have this in my init file since forever:
>> (setq my/set-cursor-color-color "")
>> (setq my/set-cursor-color-buffer "")
>> (defun my/set-cursor-color-according-to-mode ()
>> "Change cursor color according to some minor modes."
>> ;; set-cursor-color is somewhat costly, so we only call it when needed:
>> (let ((color
>> (if buffer-read-only "#8888FF"
>> (if overwrite-mode "#000000"
>> "#FF0000"))))
>> (unless (and
>> (string= color my/set-cursor-color-color)
>> (string= (buffer-name) my/set-cursor-color-buffer))
>> (set-cursor-color (setq my/set-cursor-color-color color))
>> (setq my/set-cursor-color-buffer (buffer-name)))))
>> (add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode)
> Cool. Will it be possible to replace these settings in my init file
> with the new package?
> #+begin_src emacs-lisp
> (defun my-change-cursor (&rest _)
> "Change cursor color and type depending on insertion mode and input method."
> (set-cursor-color
> (cond (repeat-in-progress "blue")
> (current-input-method "red3")
> (t "black")))
> (setq-default cursor-type
> (cond (overwrite-mode 'box)
> (t 'bar))))
> (add-hook 'post-command-hook 'my-change-cursor t)
> ;; Also update the cursor on the repeat timer events:
> (add-function :after repeat-echo-function #'my-change-cursor)
> #+end_src
Sure, I've updated the patch for handle this.
--==-=-=
Content-Type: text/html
<p>
Juri Linkov <juri@HIDDEN> writes:<br />
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>FWIW, I have this in my init file since forever:<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div><blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>(setq my/set-cursor-color-color "")<br />
(setq my/set-cursor-color-buffer "")<br />
(defun my/set-cursor-color-according-to-mode ()<br />
"Change cursor color according to some minor modes."<br />
;; set-cursor-color is somewhat costly, so we only call it when needed:<br />
(let ((color<br />
(if buffer-read-only "#8888FF"<br />
(if overwrite-mode "#000000"<br />
"#FF0000"))))<br />
(unless (and<br />
(string= color my/set-cursor-color-color)<br />
(string= (buffer-name) my/set-cursor-color-buffer))<br />
(set-cursor-color (setq my/set-cursor-color-color color))<br />
(setq my/set-cursor-color-buffer (buffer-name)))))<br />
(add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode)<br />
</div></blockquote>
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>Cool. Will it be possible to replace these settings in my init file<br />
with the new package?<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>#+begin<sub>src</sub> emacs-lisp<br />
(defun my-change-cursor (&rest _)<br />
"Change cursor color and type depending on insertion mode and input method."<br />
(set-cursor-color<br />
(cond (repeat-in-progress "blue")<br />
(current-input-method "red3")<br />
(t "black")))<br />
(setq-default cursor-type<br />
(cond (overwrite-mode 'box)<br />
(t 'bar))))<br />
(add-hook 'post-command-hook 'my-change-cursor t)<br />
</div></blockquote>
</p>
<p>
<blockquote class="gmail_quote" style="border-left:#5555EE solid 0.2em;margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isolate;display: box;">
<div>;; Also update the cursor on the repeat timer events:<br />
(add-function :after repeat-echo-function #'my-change-cursor)<br />
#+end<sub>src</sub><br />
</div></blockquote>
</p>
<p>
Sure, I've updated the patch for handle this.<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/x-patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-minor-mode-cursor-indicators-mode.patch
Content-Transfer-Encoding: quoted-printable
From 82a59dce91c15a742ed6031b6961e316c8da627b Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
This minor mode changes the cursor appearance to indicate
buffers states, such as if overwrite-mode is active or current
buffer is read-only. (Bug#77224)
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document changes.
* lisp/cursor-indicators.el
(cursor-indicators-overwrite-indicator)
(cursor-indicators-repeat-indicator)
(cursor-indicators-input-method-indicator)
(cursor-indicators-read-only-indicator): New user options.
(cursor-indicators--default-cursor-color): New use internal variable.
(cursor-indicators--update-indications): New use internal function.
(cursor-indicators-mode): New minor mode definition.
---
etc/NEWS | 9 ++
lisp/cursor-indicators.el | 185 ++++++++++++++++++++++++++++++++++++++
2 files changed, 194 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..a9fee82a29e 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,15 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New minor mode 'cursor-indicators-mode'
+This mode changes cursor appearance (color and/or type) to indicate
+different buffer states. This mode have cursor indicators for:
+- Overwrite mode
+- Read-only buffers
+- Repeat mode
+- Input method activation
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..6b9ae9677d7
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,185 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Keywords:
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package changes cursor appearance (color and/or type) to indicate
+;; different buffer states.
+;;
+;; For example:
+;;
+;; The following setting will use a YELLOW cursor in overwrite mode in rea=
d-write
+;; buffers, and a GREEN cursor in read-only buffers:
+;;
+;; (setq cursor-indicators-overwrite-indicator "yellow")
+;; (setq cursor-indicators-read-only-indicator "green")
+
+
+;;; Code:
+
+;;; User options
+(defcustom cursor-indicators-overwrite-indicator "red3"
+ "Cursor indicator used when overwrite mode is set, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-read-only-indicator "darkgreen"
+ "Cursor indicator used in read-only buffers, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-repeat-indicator "blue"
+ "Cursor indicator used when `repeat-in-progress' is non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-input-method-indicator "dark magenta"
+ "Cursor indicator used when input method is activated now.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+;;; Internal Code
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+
+(defun cursor-indicators--update-indications (&optional cursor-color)
+ (let* ((cursor
+ (or
+ ;; CURSOR-COLOR is intended to be used by the user in an advice=
-add
+ cursor-color
+ ;; XXX: global mark?
+ ;; (and cua--global-mark-active cursor-indicators-global-mark-c=
olor)
+ (and buffer-read-only cursor-indicators-read-only-indicator)
+ (and overwrite-mode cursor-indicators-overwrite-indicator)
+ (and (bound-and-true-p repeat-in-progress) cursor-indicators-re=
peat-indicator)
+ (and (bound-and-true-p current-input-method) cursor-indicators-=
input-method-indicator)
+ (cons (default-value 'cursor-type)
+ cursor-indicators--default-cursor-color)))
+ (color (if (consp cursor) (cdr cursor) cursor))
+ (type (if (consp cursor) (car cursor) cursor)))
+ (if (and color
+ (stringp color)
+ (not (equal color (frame-parameter nil 'cursor-color))))
+ (set-cursor-color color))
+ (if (and type
+ (symbolp type)
+ (not (eq type (default-value 'cursor-type))))
+ (setq-local cursor-type type))))
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+overwrite mode or read-only buffers."
+ :group 'cursor
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (add-hook 'post-command-hook #'cursor-indicators--update-indications)
+ (cursor-indicators--update-indications))
+ (remove-hook 'post-command-hook #'cursor-indicators--update-indication=
s)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
--=-=-=
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From: Juri Linkov <juri@HIDDEN>
To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN>
Subject: Re: bug#77224: [PATCH] New minor mode 'cursor-indicators-mode'
In-Reply-To: <87iknzxski.fsf@HIDDEN>
Organization: LINKOV.NET
References: <87iknzxski.fsf@HIDDEN>
Date: Mon, 24 Mar 2025 09:35:38 +0200
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> FWIW, I have this in my init file since forever:
>
> (setq my/set-cursor-color-color "")
> (setq my/set-cursor-color-buffer "")
> (defun my/set-cursor-color-according-to-mode ()
> "Change cursor color according to some minor modes."
> ;; set-cursor-color is somewhat costly, so we only call it when needed:
> (let ((color
> (if buffer-read-only "#8888FF"
> (if overwrite-mode "#000000"
> "#FF0000"))))
> (unless (and
> (string= color my/set-cursor-color-color)
> (string= (buffer-name) my/set-cursor-color-buffer))
> (set-cursor-color (setq my/set-cursor-color-color color))
> (setq my/set-cursor-color-buffer (buffer-name)))))
> (add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode)
Cool. Will it be possible to replace these settings in my init file
with the new package?
#+begin_src emacs-lisp
(defun my-change-cursor (&rest _)
"Change cursor color and type depending on insertion mode and input method."
(set-cursor-color
(cond (repeat-in-progress "blue")
(current-input-method "red3")
(t "black")))
(setq-default cursor-type
(cond (overwrite-mode 'box)
(t 'bar))))
(add-hook 'post-command-hook 'my-change-cursor t)
;; Also update the cursor on the repeat timer events:
(add-function :after repeat-echo-function #'my-change-cursor)
#+end_src
bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
Date: Sun, 23 Mar 2025 16:58:37 -0600
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Content preview: Based on Stefan Kangas comments, this minor mode mode changes
the cursor appearance to indicate overwrite mode or read-only buffers. This
is extracted from `cua-enable-cursor-indications'. Start of forwarded message
From: Stefan Kangas Subject: Re: Should 'cua-overwrite-cursor-color' be standalone?
To: Elijah Gabe Pérez , Sat, 22 Mar 2025 [...]
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--==-=-=
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Based on Stefan Kangas comments, this minor mode mode changes the cursor
appearance to indicate overwrite mode or read-only buffers.
This is extracted from `cua-enable-cursor-indications'.
-------------------- Start of forwarded message --------------------
From: Stefan Kangas <stefankangas@HIDDEN>
Subject: Re: Should 'cua-overwrite-cursor-color' be standalone?
To: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN>, emacs-devel@HIDDEN
Date: Sat, 22 Mar 2025 02:01:11 -0500 (1 day, 15 hours, 49 minutes ago)
Elijah Gabe P=C3=A9rez <eg642616@HIDDEN> writes:
> I've noticed about this variable today, but
> Should not this option be part of =3Doverwrite=3D instead =3Dcua=3D?
> Or be a standalone minor-mode?
>
> IMO, I find this useful outside =3Dcua=3D.
I think a standalone mode is probably best, because if you want the
cursor color changed for overwrite-mode, you might want it for
buffer-read-only too.
In other words, I'd do both of these:
cua-overwrite-cursor-color
cua-read-only-cursor-color
FWIW, I have this in my init file since forever:
(setq my/set-cursor-color-color "")
(setq my/set-cursor-color-buffer "")
(defun my/set-cursor-color-according-to-mode ()
"Change cursor color according to some minor modes."
;; set-cursor-color is somewhat costly, so we only call it when neede=
d:
(let ((color
(if buffer-read-only "#8888FF"
(if overwrite-mode "#000000"
"#FF0000"))))
(unless (and
(string=3D color my/set-cursor-color-color)
(string=3D (buffer-name) my/set-cursor-color-buffer))
(set-cursor-color (setq my/set-cursor-color-color color))
(setq my/set-cursor-color-buffer (buffer-name)))))
(add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode)
I picked it up on EmacsWiki years ago.
-------------------- End of forwarded message --------------------
--==-=-=
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
<p>
Based on Stefan Kangas comments, this minor mode mode changes the cursor<br=
/>
appearance to indicate overwrite mode or read-only buffers.<br />
</p>
<p>
This is extracted from `cua-enable-cursor-indications'.<br />
</p>
<p>
---------------–— Start of forwarded message ---------------&=
#x2013;—<br />
From: Stefan Kangas <stefankangas@HIDDEN><br />
Subject: Re: Should 'cua-overwrite-cursor-color' be standalone?<br />
To: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN>, emacs-devel@HIDDEN=
<br />
Date: Sat, 22 Mar 2025 02:01:11 -0500 (1 day, 15 hours, 49 minutes ago)<br =
/>
</p>
<p>
Elijah Gabe P=C3=A9rez <eg642616@HIDDEN> writes:<br />
</p>
<p>
<blockquote class=3D"gmail_quote" style=3D"border-left:#5555EE solid 0.2em;=
margin: 0em;padding-left: 0.85em;font-family: monospace;unicode-bidi: isola=
te;display: box;">
<div>I've noticed about this variable today, but<br />
Should not this option be part of <code>overwrite</code> instead <code>cua<=
/code>?<br />
Or be a standalone minor-mode?<br />
<br />
IMO, I find this useful outside <code>cua</code>.<br />
</div></blockquote>
</p>
<p>
I think a standalone mode is probably best, because if you want the<br />
cursor color changed for overwrite-mode, you might want it for<br />
buffer-read-only too.<br />
</p>
<p>
In other words, I'd do both of these:<br />
</p>
<p>
cua-overwrite-cursor-color<br />
cua-read-only-cursor-color<br />
</p>
<p>
FWIW, I have this in my init file since forever:<br />
</p>
<p>
(setq my/set-cursor-color-color "")<br />
(setq my/set-cursor-color-buffer "")<br />
(defun my/set-cursor-color-according-to-mode ()<br />
"Change cursor color according to some minor modes."<br />
;; set-cursor-color is somewhat costly, so we only call it when needed:<b=
r />
(let ((color<br />
(if buffer-read-only "#8888FF"<br />
(if overwrite-mode "#000000"<br />
"#FF0000"))))<br />
(unless (and<br />
(string=3D color my/set-cursor-color-color)<br />
(string=3D (buffer-name) my/set-cursor-color-buffer))<br />
(set-cursor-color (setq my/set-cursor-color-color color))<br />
(setq my/set-cursor-color-buffer (buffer-name)))))<br />
(add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode)<br />
</p>
<p>
I picked it up on EmacsWiki years ago.<br />
</p>
<p>
---------------–— End of forwarded message ---------------&#x=
2013;—<br />
</p>
--==-=-=--
--=-=-=
Content-Type: text/patch; charset=utf-8
Content-Disposition: attachment;
filename=0001-New-minor-mode-cursor-indicators-mode.patch
Content-Transfer-Encoding: quoted-printable
From 15b9074636a31676b83ac7e2086959e23b93cd11 Mon Sep 17 00:00:00 2001
From: =3D?UTF-8?q?El=3DC3=3DADas=3D20Gabriel=3D20P=3DC3=3DA9rez?=3D <eg6426=
16@HIDDEN>
Date: Sat, 22 Mar 2025 22:56:01 -0600
Subject: [PATCH] New minor mode 'cursor-indicators-mode'
This minor mode changes the cursor appearance to indicate
overwrite mode or read-only buffers. (bug#)
Acts similar to 'cua-enable-cursor-indications'
* etc/NEWS: Document changes.
* lisp/cursor-indicators.el
(cursor-indicators-overwrite-indicator)
(cursor-indicators-read-only-indicator): New user options.
(cursor-indicators--default-cursor-color): New use internal variable.
(cursor-indicators--update-indications): New use internal function.
(cursor-indicators-mode): New minor mode definition.
---
etc/NEWS | 5 ++
lisp/cursor-indicators.el | 125 ++++++++++++++++++++++++++++++++++++++
2 files changed, 130 insertions(+)
create mode 100644 lisp/cursor-indicators.el
diff --git a/etc/NEWS b/etc/NEWS
index cc63d03eafe..22c84d253ba 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1566,6 +1566,11 @@ This user option replaces 'follow-mode-prefix', whic=
h had to be set
before loading Follow mode. This new option allows you to change the
prefix even after it was loaded, using 'customize-option' or 'setopt'.
=20
+---
+*** New minor mode 'cursor-indicators-mode'
+This minor mode changes cursor type and/or face to indicate
+overwrite mode or read-only buffers.
+
---
*** cdl.el is now obsolete.
Use 'shell-command' and 'shell-command-on-region' instead.
diff --git a/lisp/cursor-indicators.el b/lisp/cursor-indicators.el
new file mode 100644
index 00000000000..d97237c6942
--- /dev/null
+++ b/lisp/cursor-indicators.el
@@ -0,0 +1,125 @@
+;;; cursor-indicators.el --- Cursor indicators for some states -*- lexica=
l-binding: t; -*-
+
+;; Copyright (C) 2025 Free Software Foundation, Inc.
+
+;; Author: El=C3=ADas Gabriel P=C3=A9rez <eg642616@HIDDEN>
+;; Keywords:
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; This package changes cursor appearance (color and/or type) to indicate
+;; overwrite mode and read-only buffers.
+;;
+;; For example:
+;;
+;; The following setting will use a YELLOW cursor in overwrite mode in rea=
d-write
+;; buffers, and a GREEN cursor in read-only buffers:
+;;
+;; (setq cursor-indicators-overwrite-indicator "yellow")
+;; (setq cursor-indicators-read-only-indicator "green")
+
+
+;;; Code:
+(defcustom cursor-indicators-overwrite-indicator "yellow"
+ "Cursor indicator used when overwrite mode is set, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defcustom cursor-indicators-read-only-indicator "darkgreen"
+ "Cursor indicator used in read-only buffers, if non-nil.
+Only used when `cursor-indicators-mode' is enabled.
+
+If the value is a COLOR name, then only the `cursor-color' attribute will =
be
+affected. If the value is a cursor TYPE (one of: box, hollow, bar, or hba=
r),
+then only the `cursor-type' property will be affected. If the value is
+a cons (TYPE . COLOR), then both properties are affected.
+If the value is nil then do not change cursor."
+ :group 'cursor
+ :type '(choice
+ (const :tag "None (do not change cursor)" nil)
+ (color :tag "Color")
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (cons :tag "Color and Type"
+ (choice :tag "Type"
+ (const :tag "Filled box" box)
+ (const :tag "Vertical bar" bar)
+ (const :tag "Horizontal bar" hbar)
+ (const :tag "Hollow box" hollow))
+ (color :tag "Color"))))
+
+(defvar cursor-indicators--default-cursor-color (frame-parameter nil 'curs=
or-color))
+
+(defun cursor-indicators--update-indications ()
+ (let* ((cursor
+ (or
+ ;; XXX: global mark?
+ ;; (and cua--global-mark-active cursor-indicators-global-mark-color)
+ (and buffer-read-only cursor-indicators-read-only-indicator)
+ (and overwrite-mode cursor-indicators-overwrite-indicator)
+ (cons (default-value 'cursor-type)
+ cursor-indicators--default-cursor-color)))
+ (color (if (consp cursor) (cdr cursor) cursor))
+ (type (if (consp cursor) (car cursor) cursor)))
+ (if (and color
+ (stringp color)
+ (not (equal color (frame-parameter nil 'cursor-color))))
+ (set-cursor-color color))
+ (if (and type
+ (symbolp type)
+ (not (eq type (default-value 'cursor-type))))
+ (setq-local cursor-type type))))
+
+;;;###autoload
+(define-minor-mode cursor-indicators-mode
+ "Change cursor type and/or face for indications.
+When enabled, this mode changes the cursor appearance to indicate
+overwrite mode or read-only buffers."
+ :group 'cursor
+ :global t
+ (if cursor-indicators-mode
+ (progn
+ (add-hook 'post-command-hook #'cursor-indicators--update-indications)
+ (cursor-indicators--update-indications))
+ (remove-hook 'post-command-hook #'cursor-indicators--update-indication=
s)
+ (set-cursor-color cursor-indicators--default-cursor-color)
+ (setq-local cursor-type (default-value 'cursor-type))))
+
+(provide 'cursor-indicators)
+;;; cursor-indicators.el ends here
--=20
2.49.0
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Elijah Gabe Pérez <eg642616@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#77224; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.