GNU bug report logs - #79225
30.1; Success and abort callbacks are shared across different invocations of string-edit

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Package: emacs;

Reported by: Piyush Srivastava <piyush.srivastava <at> tifr.res.in>

Date: Tue, 12 Aug 2025 16:13:02 UTC

Severity: normal

Found in version 30.1

Done: Eli Zaretskii <eliz <at> gnu.org>

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#79225: closed (30.1; Success and abort callbacks are shared
 across different invocations of string-edit)
Date: Wed, 13 Aug 2025 12:14:02 +0000
[Message part 1 (text/plain, inline)]
Your message dated Wed, 13 Aug 2025 15:12:51 +0300
with message-id <864iubo1x8.fsf <at> gnu.org>
and subject line Re: bug#79225: 30.1; Success and abort callbacks are shared across different invocations of string-edit
has caused the debbugs.gnu.org bug report #79225,
regarding 30.1; Success and abort callbacks are shared across different invocations of string-edit
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
79225: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=79225
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems
[Message part 2 (message/rfc822, inline)]
From: Piyush Srivastava <piyush.srivastava <at> tifr.res.in>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.1; Success and abort callbacks are shared across different
 invocations of string-edit
Date: Tue, 12 Aug 2025 12:28:05 +0530
The function `string-edit' uses variables
`string-edit--success-callback' and `string-edit--abort-callback' to
store callbacks to be called on successful completion and abort
respectively.  However, these variables are declared using `defvar' and
not using `defvar-local', so it looks like they are shared across
different concurrent invocations of `string-edit' (e.g., if, while a
`string-edit' buffer is active, a user goes to another buffer and
invokes another command calling `read-string-from-buffer' from that
buffer).   Is this the intended behaviour?


In GNU Emacs 30.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.41,
 cairo version 1.18.0) of 2025-02-25 built on OptiPlex-7440-AIO
Windowing system distributor 'The X.Org Foundation', version 11.0.12302006
System Description: Ubuntu 24.04.2 LTS

Configured using:
 'configure --with-prefix=/usr/local --with-native-compilation
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Configured features:
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LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP
NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
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Important settings:
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Load-path shadows:
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/home/piyushs/.config/emacs/elpa/transient-0.8.4/transient hides /usr/local/share/emacs/30.1/lisp/transient

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Memory information:
((conses 16 903799 1968635) (symbols 48 48925 19) (strings 32 253930 118628)
 (string-bytes 1 10201886) (vectors 16 89901) (vector-slots 8 1848710 586934)
 (floats 8 446 66591) (intervals 56 4329 5321) (buffers 992 26))


[Message part 3 (message/rfc822, inline)]
From: Eli Zaretskii <eliz <at> gnu.org>
To: Piyush Srivastava <piyush.srivastava <at> tifr.res.in>
Cc: 79225-done <at> debbugs.gnu.org
Subject: Re: bug#79225: 30.1;
 Success and abort callbacks are shared across different invocations
 of string-edit
Date: Wed, 13 Aug 2025 15:12:51 +0300
> Date: Wed, 13 Aug 2025 07:57:25 +0530
> From: Piyush Srivastava <piyush.srivastava <at> tifr.res.in>
> 
> There is an error in my bug-report:  the string-edit function uses 
> setq-local,  Thus, the callbacks indeed become buffer local when they 
> are assigned, so the problem I was worried about should not occur.  I 
> just got confused because the variables that store these callbacks are 
> declared using defvar rather than defvar-local, even though they are 
> intended for buffer-local use.

Thanks, I'm therefore closing this non-bug.


This bug report was last modified 23 days ago.

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