GNU bug report logs - #70213
Info-mode side window fit-window-to-buffer issue

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From: martin rudalics <rudalics <at> gmx.at>
To: Juri Linkov <juri <at> linkov.net>, Joseph Turner <joseph <at> breatheoutbreathe.in>
Cc: Stephen Berman <stephen.berman <at> gmx.net>, 70213 <at> debbugs.gnu.org
Subject: bug#70213: Info-mode side window fit-window-to-buffer issue
Date: Sun, 7 Apr 2024 10:52:23 +0200

>> In emacs -Q on master after Jan 6 patch, eval this:
>
> Maybe Martin could help to solve this problem (Cc-ed).
>
>> (progn
>>    (setq fit-window-to-buffer-horizontally t)
>>
>>    (setq display-buffer-alist
>>          '(((derived-mode . Info-mode)
>>             display-buffer-in-side-window
>>             (side . right)
>>             (window-width . fit-window-to-buffer))
>> 	  ((derived-mode . messages-buffer-mode)
>>             display-buffer-in-side-window
>>             (side . right)
>>             (window-width . fit-window-to-buffer)))))

At the time we call 'fit-window-to-buffer' the buffer is empty so we
show only 'window-min-width' columns.  Don't we have 'body-function' for
that?

>> I would expect the *info* window to fit to the buffer contents
>> when it first appears.  The patch I sent earlier fixes this.

That patch is

Display-buffer-after-ensuring-it-contains-text.patch

IIUC.  It already explains the problem in its name and does look good to
me.

martin

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