GNU bug report logs - #79200
31.0.50; Duplicated elements for '#<marker at' in buffer-undo-list

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Message #68 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Óscar Fuentes <oscarfv <at> telefonica.net>
To: 79200 <at> debbugs.gnu.org
Cc: Gerd Möllmann <gerd.moellmann <at> gmail.com>,
 Pip Cet via <bug-gnu-emacs <at> gnu.org>, Pip Cet <pipcet <at> protonmail.com>,
 Pengji Zhang <me <at> pengjiz.com>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#79200: 31.0.50; Duplicated elements for '#<marker at' in
 buffer-undo-list
Date: Sat, 09 Aug 2025 12:53:34 +0200

Reverting this commit fixes the problem, both in master and igc:

commit 6f494d74f645d6cffd98e168721a0347de271a54
Author: Pengji Zhang <me <at> pengjiz.com>
Date:   Sat Mar 29 19:04:58 2025 +0800

    New user option to hide minor mode lighters (bug#77361)
    
    * lisp/bindings.el (mode-line-collapse-minor-modes): New user
    option.
    (mode-line-minor-modes): New variable to hold mode line
    constructs for minor modes.
    (mode-line--make-lighter-menu): New helper function to generate
    the menu for hidden minor modes.
    (mode-line--minor-modes): New helper function to computer mode
    line constructs for minor mode lighters.
    (mode-line-modes): Use the new variable 'mode-line-minor-modes',
    and adjust the order of elements so the indicator for hidden
    minor modes is shown towards the end.
    
    * doc/lispref/modes.texi (Mode Line Basics): Move the paragraph
    for 'mode-line-compact' from here...
    * doc/emacs/display.texi (Optional Mode Line): ...to here, and
    document the new user option.
    * etc/NEWS: Annouce the new user option.



Seriously.

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