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To: npostavs@HIDDEN
Subject: Re: bug#8108: 24.0.50; debugging pre-write-conversion in
define-coding-system
From: Werner LEMBERG <wl@HIDDEN>
In-Reply-To: <87k2b7es3i.fsf@HIDDEN>
References: <20110224.084058.453347781.wl@HIDDEN>
<87k2b7es3i.fsf@HIDDEN>
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>> I'm updating my cjk-enc.el package (part of the CJK bundle for
>> LaTeX) to replace make-coding-system with define-coding-system.
>> However, I can't debug it.
>
> Not sure which version this corresponds to, but in [1]
> encode_coding_object started using safe_call instead of a plain call
> to run the pre-write-conversion function. safe_call intentionally
> disables the debugger while running the function:
>
> /* Use Qt to ensure debugger does not run,
> so there is no possibility of wanting to redisplay. */
> val = internal_condition_case_n (Ffuncall, nargs, args, Qt,
> safe_eval_handler);
>
> [1]: Tue Mar 29 00:34:38 2005
> http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d4850d674381d9493c94d30f8944a765e79537eb
> (decode_coding_object): Use safe_call1 instead of call1.
> (encode_coding_object): Use safe_call instead of call2.
Thanks for checking. Ken'ichi, can you shed some light why you
changed this? How shall I proceed?
Werner
bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
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From: npostavs@HIDDEN
To: Werner LEMBERG <wl@HIDDEN>
Subject: Re: bug#8108: 24.0.50;
debugging pre-write-conversion in define-coding-system
References: <20110224.084058.453347781.wl@HIDDEN>
Date: Sat, 10 Dec 2016 10:12:01 -0500
In-Reply-To: <20110224.084058.453347781.wl@HIDDEN> (Werner LEMBERG's message
of "Thu, 24 Feb 2011 08:40:58 +0100 (CET)")
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Werner LEMBERG <wl@HIDDEN> writes:
> ----------------------------------------------------------------------
>
>
> I'm updating my cjk-enc.el package (part of the CJK bundle for LaTeX)
> to replace make-coding-system with define-coding-system. However, I
> can't debug it.
>
> In previous Emacs versions, I've instrumented the function used for
> the pre-write-conversion hook, and the debugger correctly stops there.
> However, with a recent Emacs (bzr version 103411 from today) this no
> longer works. Is this a bug? Am I missing something?
Not sure which version this corresponds to, but in [1]
encode_coding_object started using safe_call instead of a plain call to
run the pre-write-conversion function. safe_call intentionally disables
the debugger while running the function:
/* Use Qt to ensure debugger does not run,
so there is no possibility of wanting to redisplay. */
val = internal_condition_case_n (Ffuncall, nargs, args, Qt,
safe_eval_handler);
[1]: Tue Mar 29 00:34:38 2005
http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d4850d674381d9493c94d30f8944a765e79537eb
(decode_coding_object): Use safe_call1 instead of call1.
(encode_coding_object): Use safe_call instead of call2.
bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
Full text available.Debbugs Internal Request <help-debbugs@HIDDEN>
to internal_control <at> debbugs.gnu.org.
Full text available.Eli Zaretskii <eliz@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Debbugs Internal Request <help-debbugs@HIDDEN>
to internal_control <at> debbugs.gnu.org.
Full text available.Received: (at 8108-done) by debbugs.gnu.org; 27 Dec 2011 03:55:16 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Dec 26 22:55:16 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1RfO8B-0005po-V9 for submit <at> debbugs.gnu.org; Mon, 26 Dec 2011 22:55:16 -0500 Received: from mtaout21.012.net.il ([80.179.55.169]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eliz@HIDDEN>) id 1RfO88-0005pf-Ns for 8108-done <at> debbugs.gnu.org; Mon, 26 Dec 2011 22:55:14 -0500 Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0LWU00G00G0GJP00@HIDDEN> for 8108-done <at> debbugs.gnu.org; Tue, 27 Dec 2011 05:52:35 +0200 (IST) Received: from HOME-C4E4A596F7 ([77.126.18.76]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LWU00GO6G3MCGA0@HIDDEN>; Tue, 27 Dec 2011 05:52:35 +0200 (IST) Date: Tue, 27 Dec 2011 05:52:39 +0200 From: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#8108: 24.0.50; debugging pre-write-conversion in define-coding-system In-reply-to: <20111226.210344.227603265.wl@HIDDEN> X-012-Sender: halo1@HIDDEN To: Werner LEMBERG <wl@HIDDEN> Message-id: <83fwg6wu0o.fsf@HIDDEN> References: <20110224.084058.453347781.wl@HIDDEN> <20110421.074819.360562129.wl@HIDDEN> <83ipu82ctb.fsf@HIDDEN> <20111226.210344.227603265.wl@HIDDEN> X-Spam-Score: -2.1 (--) X-Debbugs-Envelope-To: 8108-done Cc: 8108-done <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: Eli Zaretskii <eliz@HIDDEN> List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://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: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -2.1 (--) > Date: Mon, 26 Dec 2011 21:03:44 +0100 (CET) > Cc: 8108 <at> debbugs.gnu.org > From: Werner LEMBERG <wl@HIDDEN> > > > The problem has been solved meanwhile, thanks to Hin-Tak Leung who > kindly revised `cjk-enc.el'. It is not a bug in Emacs, but > `char-charset' and `split-char' work differently in Emacs 23 and > newer, and I missed this change. > > Please close this bug report as invalid. Done.
Werner LEMBERG <wl@HIDDEN>:Eli Zaretskii <eliz@HIDDEN>:
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Date: Mon, 26 Dec 2011 21:03:44 +0100 (CET)
Message-Id: <20111226.210344.227603265.wl@HIDDEN>
To: eliz@HIDDEN
Subject: Re: bug#8108: 24.0.50; debugging pre-write-conversion in
define-coding-system
From: Werner LEMBERG <wl@HIDDEN>
In-Reply-To: <83ipu82ctb.fsf@HIDDEN>
References: <20110224.084058.453347781.wl@HIDDEN>
<20110421.074819.360562129.wl@HIDDEN> <83ipu82ctb.fsf@HIDDEN>
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> I don't know enough about Edebug to help you understand why it
> doesn't get activated.
The problem has been solved meanwhile, thanks to Hin-Tak Leung who
kindly revised `cjk-enc.el'. It is not a bug in Emacs, but
`char-charset' and `split-char' work differently in Emacs 23 and
newer, and I missed this change.
Please close this bug report as invalid.
Werner
bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
Full text available.Received: (at 8108) by debbugs.gnu.org; 21 Apr 2011 09:06:54 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Apr 21 05:06:54 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1QCpqg-0003Gr-Eg for submit <at> debbugs.gnu.org; Thu, 21 Apr 2011 05:06:54 -0400 Received: from mtaout23.012.net.il ([80.179.55.175]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <eliz@HIDDEN>) id 1QCpqe-0003Gf-AO for 8108 <at> debbugs.gnu.org; Thu, 21 Apr 2011 05:06:53 -0400 Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0LJZ00500VU8R800@HIDDEN> for 8108 <at> debbugs.gnu.org; Thu, 21 Apr 2011 12:06:13 +0300 (IDT) Received: from HOME-C4E4A596F7 ([77.124.129.240]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LJZ005LVVYBRE00@HIDDEN>; Thu, 21 Apr 2011 12:06:13 +0300 (IDT) Date: Thu, 21 Apr 2011 12:06:40 +0300 From: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#8108: 24.0.50; debugging pre-write-conversion in define-coding-system In-reply-to: <20110421.074819.360562129.wl@HIDDEN> X-012-Sender: halo1@HIDDEN To: Werner LEMBERG <wl@HIDDEN> Message-id: <83ipu82ctb.fsf@HIDDEN> References: <20110224.084058.453347781.wl@HIDDEN> <20110421.074819.360562129.wl@HIDDEN> X-Spam-Score: -1.8 (-) X-Debbugs-Envelope-To: 8108 Cc: 8108 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: Eli Zaretskii <eliz@HIDDEN> List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/pipermail/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: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -1.8 (-) > Date: Thu, 21 Apr 2011 07:48:19 +0200 (CEST) > From: Werner LEMBERG <wl@HIDDEN> > > > Any takers? I don't know enough about Edebug to help you understand why it doesn't get activated. However, if you can tell which version of Emacs was last that did invoke the debugger, I could try looking for the changes that could have caused that. E.g., does that work in Emacs 23.x? > The very problem is that cjk-enc.el, after being adapted > to define-coding-system, completely fails: I no longer get any > reasonable output, and all CJK characters disappear in the output. > But without being able to debug I can't tell what and where exactly it > is failing... Are you comfortable with debugging on the C level, or does the solution have to be on the Lisp level? If the former, it looks like the pre-write-conversion function is invoked in this fragment from encode_coding_object: args[0] = CODING_ATTR_PRE_WRITE (attrs); args[1] = make_number (BEG); args[2] = make_number (Z); safe_call (3, args); By stepping into the safe_call function, then into Funcall that it calls, you should be able to see how the Lisp interpreter runs the code of you pre-write-conversion function and where it fails. It is less convenient than debugging in Lisp, but you still should be able to display all the forms that are being evaluated, show the Lisp backtrace with "xbacktrace", and even step into C-level primitives you invoke from your pre-write-conversion function, something you cannot do from Lisp. Alternatively, maybe post here the code of your pre-write-conversion function, perhaps someone will be able to find the problem just by looking at the code.
owner <at> debbugs.gnu.org, bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
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To: 8108 <at> debbugs.gnu.org
Subject: Re: bug#8108: 24.0.50; debugging pre-write-conversion in
define-coding-system
From: Werner LEMBERG <wl@HIDDEN>
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Any takers? The very problem is that cjk-enc.el, after being adapted
to define-coding-system, completely fails: I no longer get any
reasonable output, and all CJK characters disappear in the output.
But without being able to debug I can't tell what and where exactly it
is failing...
Maybe there is a simple workaround?
Werner
owner <at> debbugs.gnu.org, bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 24 Feb 2011 07:41:17 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Feb 24 02:41:17 2011 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1PsVp6-0004fb-JY for submit <at> debbugs.gnu.org; Thu, 24 Feb 2011 02:41:16 -0500 Received: from eggs.gnu.org ([140.186.70.92]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from <werner.lemberg@HIDDEN>) id 1PsVp4-0004fO-1P for submit <at> debbugs.gnu.org; Thu, 24 Feb 2011 02:41:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <werner.lemberg@HIDDEN>) id 1PsVoy-00040A-2e for submit <at> debbugs.gnu.org; Thu, 24 Feb 2011 02:41:09 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, T_TO_NO_BRKTS_FREEMAIL autolearn=unavailable version=3.3.1 Received: from lists.gnu.org ([199.232.76.165]:34259) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <werner.lemberg@HIDDEN>) id 1PsVoy-000405-04 for submit <at> debbugs.gnu.org; Thu, 24 Feb 2011 02:41:08 -0500 Received: from [140.186.70.92] (port=46416 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PsVow-0006LT-Ku for bug-gnu-emacs@HIDDEN; Thu, 24 Feb 2011 02:41:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <werner.lemberg@HIDDEN>) id 1PsVov-0003zf-3H for bug-gnu-emacs@HIDDEN; Thu, 24 Feb 2011 02:41:06 -0500 Received: from mailout-de.gmx.net ([213.165.64.22]:40493) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from <werner.lemberg@HIDDEN>) id 1PsVou-0003zO-L4 for bug-gnu-emacs@HIDDEN; Thu, 24 Feb 2011 02:41:05 -0500 Received: (qmail invoked by alias); 24 Feb 2011 07:41:02 -0000 Received: from 178-191-190-73.adsl.highway.telekom.at (EHLO localhost) [178.191.190.73] by mail.gmx.net (mp050) with SMTP; 24 Feb 2011 08:41:02 +0100 X-Authenticated: #54312696 X-Provags-ID: V01U2FsdGVkX1/8GMYcRZv89JMoOFFyH1/NedQW+MNsVslBID0eWZ YLrX9K1ZzN/OKv Date: Thu, 24 Feb 2011 08:40:58 +0100 (CET) Message-Id: <20110224.084058.453347781.wl@HIDDEN> To: bug-gnu-emacs@HIDDEN Subject: 24.0.50; debugging pre-write-conversion in define-coding-system From: Werner LEMBERG <wl@HIDDEN> X-Mailer: Mew version 6.3.50 on Emacs 24.0.50.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 199.232.76.165 X-Spam-Score: -5.9 (-----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/pipermail/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: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -5.9 (-----) ---------------------------------------------------------------------- I'm updating my cjk-enc.el package (part of the CJK bundle for LaTeX) to replace make-coding-system with define-coding-system. However, I can't debug it. In previous Emacs versions, I've instrumented the function used for the pre-write-conversion hook, and the debugger correctly stops there. However, with a recent Emacs (bzr version 103411 from today) this no longer works. Is this a bug? Am I missing something? Here's an example, defining an encoding called `foo-coding'. Trying to instrument `foo-encode', then saving an arbitrary test file with `foo-coding', the debugger doesn't get invoked. (define-coding-system 'foo-coding "Coding-system foo" :mnemonic ?c :coding-type 'emacs-mule :charset-list '(ascii) :pre-write-conversion 'foo-encode) (defun foo-encode (from to) (insert "foo")) ---------------------------------------------------------------------- In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.22.1) of 2011-02-24 on linux-nvf0.site Windowing system distributor `The X.Org Foundation', version 11.0.10903000 configured using `configure 'MAKEINFO=/usr/bin/makeinfo'' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: de_DE.UTF-8 value of $XMODIFIERS: @im=none locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Summary Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t column-number-mode: t transient-mark-mode: t Recent input: M-x m e w <return> <return> d d SPC d d x i <return> d x M-x e m a c s - v e <tab> <tab> <return> g B a <tab> <return> C-r e m a c s C-r C-a <return> M-x e m a c s - b <tab> C-g b u f <backspace> <backspace> b u g <tab> <tab> C-g M-x e m a c s - <tab> C-g M-x b u g <tab> <tab> C-g M-x r e p o <tab> r t <tab> <return> Recent messages: Refiling and deleting...done GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.22.1) of 2011-02-24 on linux-nvf0.site Scanning +Backup...done Mark saved where search started Quit [2 times] Making completion list... Quit Making completion list... Quit Making completion list... Load-path shadows: None found. 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Werner LEMBERG <wl@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.owner <at> debbugs.gnu.org, bug-gnu-emacs@HIDDEN:bug#8108; Package emacs.
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