Subject: Re: bug#70213: Info-mode side window fit-window-to-buffer issue

From: martin rudalics <[email-masked]>
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