Received: (at 74666) by debbugs.gnu.org; 28 Dec 2024 16:35:23 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Dec 28 11:35:23 2024 Received: from localhost ([127.0.0.1]:52434 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tRZmc-0005rc-Qk for submit <at> debbugs.gnu.org; Sat, 28 Dec 2024 11:35:23 -0500 Received: from eggs.gnu.org ([209.51.188.92]:50204) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tRZmb-0005rM-4f for 74666 <at> debbugs.gnu.org; Sat, 28 Dec 2024 11:35:21 -0500 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 1tRZkO-0000xH-Ie; Sat, 28 Dec 2024 11:33:04 -0500 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=eE357RDVzA31Vk7cW/K0zlceZ6vWooIf6SureNgzi60=; b=N/Tz/jOQtcde SWyOPLgclDVA1bkH/COAob1Zvuc4rxCiOKhoqLoow3A2K5szI2wElBsiKndwMoNAxxsWFJkMhD8Dp PUIrKxrffpR6a9VLLjqQKJx5b/2sODRb0naWelmZAZ7MC32PUQm2MdCNh3VZB7a1w9W/RyjqZL6I+ AwKtOExI8+FqMWLvXxAaQk+GyrShv9qKJ9C3FfbVrzSEq8tHu2wbVQcvP48Xl/1BaAoAQ4OoHcY6n CdhMs/lhOAPRWG4syrU4hMuYoAVwF0XkjiCNC3sz49bUpwgkys4FUt646MtBAXf//pzH95KpF1fYa wf7atNPB3aTzT1k617F2iw==; Date: Sat, 28 Dec 2024 18:33:00 +0200 Message-Id: <86bjwvsr7n.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Stefan Monnier <monnier@HIDDEN> In-Reply-To: <jwvo70vam8d.fsf-monnier+emacs@HIDDEN> (message from Stefan Monnier on Sat, 28 Dec 2024 10:00:33 -0500) Subject: Re: bug#74666: 31.0.50; Regression in replace-match with empty-adjacent groups References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> <jwvseqqwbc6.fsf-monnier+emacs@HIDDEN> <8340bf95-c716-4ebe-994e-07554b6e2165@HIDDEN> <jwvzfkvknwt.fsf-monnier+emacs@HIDDEN> <8634i8t4ux.fsf@HIDDEN> <jwvo70vam8d.fsf-monnier+emacs@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 74666 Cc: 74666 <at> debbugs.gnu.org, ideasman42@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: Stefan Monnier <monnier@HIDDEN> > Cc: ideasman42@HIDDEN, 74666 <at> debbugs.gnu.org > Date: Sat, 28 Dec 2024 10:00:33 -0500 > > > What should we do with this bug report? > > I'd leave it open for now. OK, but when should I ask again?
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
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From: Stefan Monnier <monnier@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#74666: 31.0.50; Regression in replace-match with
empty-adjacent groups
In-Reply-To: <8634i8t4ux.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 28 Dec
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> What should we do with this bug report?
I'd leave it open for now.
Stefan
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
Full text available.Received: (at 74666) by debbugs.gnu.org; 28 Dec 2024 11:38:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Dec 28 06:38:26 2024 Received: from localhost ([127.0.0.1]:49506 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tRV9F-0008Pn-Sm for submit <at> debbugs.gnu.org; Sat, 28 Dec 2024 06:38:26 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52828) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tRV9D-0008Pa-WA for 74666 <at> debbugs.gnu.org; Sat, 28 Dec 2024 06:38:24 -0500 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 1tRV97-0000Bb-UM; Sat, 28 Dec 2024 06:38:17 -0500 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=g+yp6k2Ct2U2/ozN0KAWDRvOEgj76z5omxO8QzIL4jg=; b=XWzNSzXmvE7q/NJ8DwcM PmNuo4swvTptSA3PXljIydnV80cKUk6RS91ZDNxjExd4qhyrV5/g5xmMdHqSr14P4W6lktG6mbuti EWEDlseFBDXfV2H3Zq4kXU/OVu5YxJuVs9ZOQcVw/5NZgDpb9YAh6PltulT1xlQ6jtQn+g/6zEElM zSV3ujfoRc/Fzbz36Zi1phcrTdrFlWL3yYd3eGgFHP3rARaQZSCZuE2dQEZz9HmWYyeAG5dPJd7HY B7CEeMZWkdJjukzVU2do8zdteBYW8DppQ2jyLLku5+N5JEUIUJc3UJc2uTi/snFWfLGPpOY/RVqRi 5eHvI/jf9t0Zxg==; Date: Sat, 28 Dec 2024 13:38:14 +0200 Message-Id: <8634i8t4ux.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Stefan Monnier <monnier@HIDDEN> In-Reply-To: <jwvzfkvknwt.fsf-monnier+emacs@HIDDEN> (bug-gnu-emacs@HIDDEN) Subject: Re: bug#74666: 31.0.50; Regression in replace-match with empty-adjacent groups References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> <jwvseqqwbc6.fsf-monnier+emacs@HIDDEN> <8340bf95-c716-4ebe-994e-07554b6e2165@HIDDEN> <jwvzfkvknwt.fsf-monnier+emacs@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: 74666 Cc: 74666 <at> debbugs.gnu.org, ideasman42@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: 74666 <at> debbugs.gnu.org > Date: Mon, 16 Dec 2024 22:18:57 -0500 > From: Stefan Monnier via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN> > > > In this case, the match data is set with `set-match-data' using > > calculated ranges. > > I guess we can take this as good thing: it means complexifying the > regexp code would be wasted. 🙂 > > > Since this used to work I think it's reasonable to consider it a regression. > > I was not trying to say it's not a regression. Just pouting because the > old behavior was just a lucky accident and recovering it without losing > the other improvement isn't completely straightforward. > > > I've since committed a workaround to evil-numbers [1], although I'd suspect > > this would impact others. > > [ And the workaround relies on another lucky accident: the "easiest" > fix for the problem would break your workaround. 🙁 ] What should we do with this bug report?
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
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From: Stefan Monnier <monnier@HIDDEN>
To: Campbell Barton <ideasman42@HIDDEN>
Subject: Re: bug#74666: 31.0.50; Regression in replace-match with
empty-adjacent groups
In-Reply-To: <8340bf95-c716-4ebe-994e-07554b6e2165@HIDDEN> (Campbell
Barton's message of "Sun, 15 Dec 2024 12:10:26 +1100")
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> In this case, the match data is set with `set-match-data' using
> calculated ranges.
I guess we can take this as good thing: it means complexifying the
regexp code would be wasted. =F0=9F=99=82
> Since this used to work I think it's reasonable to consider it a regressi=
on.
I was not trying to say it's not a regression. Just pouting because the
old behavior was just a lucky accident and recovering it without losing
the other improvement isn't completely straightforward.
> I've since committed a workaround to evil-numbers [1], although I'd suspe=
ct
> this would impact others.
[ And the workaround relies on another lucky accident: the "easiest"
fix for the problem would break your workaround. =F0=9F=99=81 ]
Stefan
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
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([2402:b801:2c65:4b00::1]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2f142f9e193sm5426647a91.32.2024.12.14.17.10.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 14 Dec 2024 17:10:30 -0800 (PST) Message-ID: <8340bf95-c716-4ebe-994e-07554b6e2165@HIDDEN> Date: Sun, 15 Dec 2024 12:10:26 +1100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: bug#74666: 31.0.50; Regression in replace-match with empty-adjacent groups To: Stefan Monnier <monnier@HIDDEN> References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> <jwvseqqwbc6.fsf-monnier+emacs@HIDDEN> Content-Language: en-US From: Campbell Barton <ideasman42@HIDDEN> In-Reply-To: <jwvseqqwbc6.fsf-monnier+emacs@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: 74666 Cc: 74666 <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: -0.7 (/) On 24-12-15 3:11 AM, Stefan Monnier wrote: >> (defun test-me (is-forward) >> (let ((result "")) >> (with-temp-buffer >> (insert "__B_\n") >> (save-match-data >> (set-match-data (list 2 4 2 2 2 4)) >> (cond >> (is-forward >> (replace-match "HELLO" t t nil 1) >> (replace-match "WORLD" t t nil 2)) >> (t >> (replace-match "WORLD" t t nil 2) >> (replace-match "HELLO" t t nil 1)))) >> (setq result (buffer-substring-no-properties (point-min) >> (point-max)))) >> result)) > [...] >> In emacs 29.4 this prints: >> >> A: _HELLOWORLD_ >> B: _HELLOWORLD_ >> >> In emacs 31.0.50 this prints: >> >> A: _WORLD_ >> B: _HELLOWORLD_ > > The problem is that the `set-match-data` doesn't give us any information > about the intended inclusion relationship between the subgroups. > > I agree that the behavior you see is not the one you want if it's the > result of: > > (goto-char (point-min)) > (looking-at "_\\(\\)\\(_B\\)") > > But OTOH it is the one we want if it is the result of: > > (goto-char (point-min)) > (looking-at "_\\(?2:\\(?1:\\)_B\\)") > > We can try and guess the inclusion relationship based on circumstantial > evidence (e.g. a "_\\(\\)\\(_B\\)" regexp is more likely than > "_\\(?2:\\(?1:\\)_B\\)"), but that would make the code of > `update_search_regs` tricky, with various heuristics. > And we'll never handle all cases right unless we make significant > changes to the match-data (and the regexp compiler) to keep track of > inclusion relationships. > > Could you give us some information about the larger context in which you > bumped into this problem? On the user side - I ran into this bug when decrementing numbers broke for me in the evil-numbers package [0]. Numbers would fail to become negative. Decrementing 0 would become 1. In this case, the match data is set with `set-match-data' using calculated ranges. Since this used to work I think it's reasonable to consider it a regression. I've since committed a workaround to evil-numbers [1], although I'd suspect this would impact others. [0]: https://melpa.org/#/evil-numbers [1]: https://github.com/juliapath/evil-numbers/commit/f93258b706fa5cf9259e815c2d8258fcc6262804
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
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From: Stefan Monnier <monnier@HIDDEN>
To: Campbell Barton <ideasman42@HIDDEN>
Subject: Re: bug#74666: 31.0.50; Regression in replace-match with
empty-adjacent groups
In-Reply-To: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> (Campbell
Barton's message of "Tue, 3 Dec 2024 21:56:02 +1100")
Message-ID: <jwvseqqwbc6.fsf-monnier+emacs@HIDDEN>
References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN>
Date: Sat, 14 Dec 2024 11:11:36 -0500
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> (defun test-me (is-forward)
> (let ((result ""))
> (with-temp-buffer
> (insert "__B_\n")
> (save-match-data
> (set-match-data (list 2 4 2 2 2 4))
> (cond
> (is-forward
> (replace-match "HELLO" t t nil 1)
> (replace-match "WORLD" t t nil 2))
> (t
> (replace-match "WORLD" t t nil 2)
> (replace-match "HELLO" t t nil 1))))
> (setq result (buffer-substring-no-properties (point-min)
> (point-max))))
> result))
[...]
> In emacs 29.4 this prints:
>
> A: _HELLOWORLD_
> B: _HELLOWORLD_
>
> In emacs 31.0.50 this prints:
>
> A: _WORLD_
> B: _HELLOWORLD_
The problem is that the `set-match-data` doesn't give us any information
about the intended inclusion relationship between the subgroups.
I agree that the behavior you see is not the one you want if it's the
result of:
(goto-char (point-min))
(looking-at "_\\(\\)\\(_B\\)")
But OTOH it is the one we want if it is the result of:
(goto-char (point-min))
(looking-at "_\\(?2:\\(?1:\\)_B\\)")
We can try and guess the inclusion relationship based on circumstantial
evidence (e.g. a "_\\(\\)\\(_B\\)" regexp is more likely than
"_\\(?2:\\(?1:\\)_B\\)"), but that would make the code of
`update_search_regs` tricky, with various heuristics.
And we'll never handle all cases right unless we make significant
changes to the match-data (and the regexp compiler) to keep track of
inclusion relationships.
Could you give us some information about the larger context in which you
bumped into this problem?
Stefan
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
Full text available.Received: (at 74666) by debbugs.gnu.org; 14 Dec 2024 09:43:29 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Dec 14 04:43:29 2024 Received: from localhost ([127.0.0.1]:45492 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tMOgL-00071r-2W for submit <at> debbugs.gnu.org; Sat, 14 Dec 2024 04:43:29 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44688) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tMOgJ-00071b-4y for 74666 <at> debbugs.gnu.org; Sat, 14 Dec 2024 04:43:27 -0500 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 1tMOgD-0002jj-Ts; Sat, 14 Dec 2024 04:43:21 -0500 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=EkVab09aO/6wjjQTK6H6rDrIwP48XbCsVaKtib1LFM8=; b=imVVRxxE4kId ElQPZ+BEdHngMgYB3e2VbdooUA3iAtUNCil6k+x84s+cCOBrqQPMCe/8uFymMhksOQC2NnOanB8uP R2iEetuBbxLEYc2UxtPYCapMAgmuBxhs1vWUq/zKygCzObHK0FQ9c+yJt3aZ0NLZVlWK5Tm2CdX0l QuMSbVIdOwprHfBTw3PmxQ8ITHspsHf22+1AI20ObwbKKNa/3cqUoapFWIuLsEGN3pXaKScS5gp0W Rld9o7PXKiGrttjPjwzqYhGQEiUHFCSe4Bbq0WixLRrMNHSdKv8pExV9R9iNtnYjUQVU/rHBTSVZe PNJr90e9GzYkIZyjsixjfA==; Date: Sat, 14 Dec 2024 11:43:17 +0200 Message-Id: <86ttb6vbuy.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: monnier@HIDDEN In-Reply-To: <86y10w2763.fsf@HIDDEN> (message from Eli Zaretskii on Tue, 03 Dec 2024 16:05:40 +0200) Subject: Re: bug#74666: 31.0.50; Regression in replace-match with empty-adjacent groups References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> <86y10w2763.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 74666 Cc: 74666 <at> debbugs.gnu.org, ideasman42@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 (---) Ping! > Cc: 74666 <at> debbugs.gnu.org > Date: Tue, 03 Dec 2024 16:05:40 +0200 > From: Eli Zaretskii <eliz@HIDDEN> > > > Date: Tue, 3 Dec 2024 21:56:02 +1100 > > From: Campbell Barton <ideasman42@HIDDEN> > > > > > > Run the following file as an executable script: > > > > emacs -Q --batch -l ./emacs-test.el > > > > ;; BEGIN SCRIPT: > > #!/usr/bin/env -S emacs --batch -l > > ;;; emacs-git-log --- Batch check emacs-lisp. -*- lexical-binding: t -*- > > > > (defun printf (&rest args) > > (princ (apply #'format args) #'external-debugging-output)) > > > > (defun test-me (is-forward) > > (let ((result "")) > > (with-temp-buffer > > (insert "__B_\n") > > (save-match-data > > (set-match-data (list 2 4 2 2 2 4)) > > (cond > > (is-forward > > (replace-match "HELLO" t t nil 1) > > (replace-match "WORLD" t t nil 2)) > > (t > > (replace-match "WORLD" t t nil 2) > > (replace-match "HELLO" t t nil 1)))) > > (setq result (buffer-substring-no-properties (point-min) > > (point-max)))) > > result)) > > > > (printf "A: %s" (test-me t)) > > (printf "B: %s" (test-me nil)) > > ;; END SCRIPT: > > > > In emacs 29.4 this prints: > > > > A: _HELLOWORLD_ > > B: _HELLOWORLD_ > > > > In emacs 31.0.50 this prints: > > > > A: _WORLD_ > > B: _HELLOWORLD_ > > > > This is a regression in 47b497b4dac91e5ea56102018223bdeb5e21a93b. > > Stefan, could you please take a look? > > > >
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
Full text available.Received: (at 74666) by debbugs.gnu.org; 3 Dec 2024 14:05:55 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Dec 03 09:05:55 2024 Received: from localhost ([127.0.0.1]:58773 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tITXG-0008IL-OA for submit <at> debbugs.gnu.org; Tue, 03 Dec 2024 09:05:55 -0500 Received: from eggs.gnu.org ([209.51.188.92]:46006) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tITXF-0008I4-EA for 74666 <at> debbugs.gnu.org; Tue, 03 Dec 2024 09:05:54 -0500 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 1tITX8-0004i4-Ns; Tue, 03 Dec 2024 09:05:47 -0500 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=vcWNyl9nGvYdzzsAdgu1Hj7d/JIMdTNulX7ifS0lkzE=; b=LcT0SYgukWVf NFOH14XGSrevq+RC+hdVUInso6rKYVGoYha7UP1XyOAGjmXR7Zv/nV/OEKbrEs/sILCQ0m0sUPT+F FvHJ1495TwrF1+pKR4w84dT9S4haHJoEvFXOn6RAUARvidA+J+CfRFd7xz9v59RtdyjatjaeiMoPx 0qqdluCXDdiOalIlklmS6EAZjFBFPhZNGWSvQFsxcBGdHokvJ6/aYRs/SeDDnnfolRlxtnGK+hDBx Z24eOTUdPmI2yqb7JfCs0L8Bgxgo8SPYovcpcusTbDfAgkjjnPIMxmMyEH+xI4u2zZg4JLxLCmq5f SqCnIYB3VQXa2xzBTu2e6Q==; Date: Tue, 03 Dec 2024 16:05:40 +0200 Message-Id: <86y10w2763.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Campbell Barton <ideasman42@HIDDEN>, Stefan Monnier <monnier@HIDDEN> In-Reply-To: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> (message from Campbell Barton on Tue, 3 Dec 2024 21:56:02 +1100) Subject: Re: bug#74666: 31.0.50; Regression in replace-match with empty-adjacent groups References: <5aad7547-5fd7-4eba-a6eb-38b1b4753dd8@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 74666 Cc: 74666 <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: Tue, 3 Dec 2024 21:56:02 +1100 > From: Campbell Barton <ideasman42@HIDDEN> > > > Run the following file as an executable script: > > emacs -Q --batch -l ./emacs-test.el > > ;; BEGIN SCRIPT: > #!/usr/bin/env -S emacs --batch -l > ;;; emacs-git-log --- Batch check emacs-lisp. -*- lexical-binding: t -*- > > (defun printf (&rest args) > (princ (apply #'format args) #'external-debugging-output)) > > (defun test-me (is-forward) > (let ((result "")) > (with-temp-buffer > (insert "__B_\n") > (save-match-data > (set-match-data (list 2 4 2 2 2 4)) > (cond > (is-forward > (replace-match "HELLO" t t nil 1) > (replace-match "WORLD" t t nil 2)) > (t > (replace-match "WORLD" t t nil 2) > (replace-match "HELLO" t t nil 1)))) > (setq result (buffer-substring-no-properties (point-min) > (point-max)))) > result)) > > (printf "A: %s" (test-me t)) > (printf "B: %s" (test-me nil)) > ;; END SCRIPT: > > In emacs 29.4 this prints: > > A: _HELLOWORLD_ > B: _HELLOWORLD_ > > In emacs 31.0.50 this prints: > > A: _WORLD_ > B: _HELLOWORLD_ > > This is a regression in 47b497b4dac91e5ea56102018223bdeb5e21a93b. Stefan, could you please take a look?
bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
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Subject: 31.0.50; Regression in replace-match with empty-adjacent groups
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Run the following file as an executable script:
emacs -Q --batch -l ./emacs-test.el
;; BEGIN SCRIPT:
#!/usr/bin/env -S emacs --batch -l
;;; emacs-git-log --- Batch check emacs-lisp. -*- lexical-binding: t -*-
(defun printf (&rest args)
(princ (apply #'format args) #'external-debugging-output))
(defun test-me (is-forward)
(let ((result ""))
(with-temp-buffer
(insert "__B_\n")
(save-match-data
(set-match-data (list 2 4 2 2 2 4))
(cond
(is-forward
(replace-match "HELLO" t t nil 1)
(replace-match "WORLD" t t nil 2))
(t
(replace-match "WORLD" t t nil 2)
(replace-match "HELLO" t t nil 1))))
(setq result (buffer-substring-no-properties (point-min)
(point-max))))
result))
(printf "A: %s" (test-me t))
(printf "B: %s" (test-me nil))
;; END SCRIPT:
In emacs 29.4 this prints:
A: _HELLOWORLD_
B: _HELLOWORLD_
In emacs 31.0.50 this prints:
A: _WORLD_
B: _HELLOWORLD_
This is a regression in 47b497b4dac91e5ea56102018223bdeb5e21a93b.
In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.43, cairo version 1.18.2) of 2024-12-03 built on
campbell-trx40aorusmaster
Repository revision: 04d035acd72823e82dd61c4894f9c09113e65dd6
Repository branch: master
System Description: Arch Linux
Configured using:
'configure --prefix=/opt/emacs --with-sound=no --disable-acl
--with-file-notification=no --with-xpm --with-native-compilation
--with-jpeg --with-tiff --with-gif --with-png
--without-compress-install --without-rsvg --without-lcms2
--without-libsystemd --without-gsettings --without-harfbuzz
--without-m17n-flt --without-libotf --without-gpm --without-dbus
--without-gsettings --without-gconf --without-selinux --without-gnutls
--without-makeinfo --without-libgmp --with-zlib --with-threads
--with-x-toolkit=gtk3 --with-xft --with-pgtk --with-tree-sitter
--with-modules 'CFLAGS=-O3 -mtune=native -march=native -pipe
-fomit-frame-pointer''
Configured features:
CAIRO FREETYPE GIF GLIB JPEG LIBXML2 MODULES NATIVE_COMP PDUMPER PGTK
PNG SECCOMP SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP
XIM GTK3 ZLIB
Important settings:
value of $LC_MONETARY: en_US.UTF-8
value of $LC_NUMERIC: en_US.UTF-8
value of $LC_TIME: en_US.UTF-8
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
minibuffer-regexp-mode: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date subr-x mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils rmc iso-transl tooltip cconv eldoc paren electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/pgtk-win pgtk-win term/common-win touch-screen pgtk-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dynamic-setting
font-render-setting cairo gtk pgtk multi-tty move-toolbar
make-network-process native-compile emacs)
Memory information:
((conses 16 53518 10389) (symbols 48 5294 0) (strings 32 18752 1367)
(string-bytes 1 607905) (vectors 16 9151)
(vector-slots 8 128466 8940) (floats 8 22 2) (intervals 56 268 3)
(buffers 992 10))
Campbell Barton <ideasman42@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#74666; Package emacs.
Full text available.
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Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.