GNU bug report logs - #74361
[PATCH] New option xref-navigation-display-window-action

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From: Juri Linkov <juri <at> linkov.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: dmitry <at> gutov.dev, 74361 <at> debbugs.gnu.org, rudalics <at> gmx.at
Subject: bug#74361: [PATCH] New option xref-navigation-display-window-action
Date: Thu, 21 Nov 2024 21:39:39 +0200

>> > If someone explains to me in small words how this works in comint (and
>> > other modes which provide a similar category symbol), I will see about
>> > improving and clarifying the docs.
>> 
>> '(category . comint)' is used in 'display-comint-buffer-action'
>> that is marked obsolete.  So for Emacs 31 its defcustom could be
>> downgraded to a simple defvar, and moved to comint.el, and maybe
>> also autoloaded when it's used by modes independent from comint.el.
>
> But nothing in comint.el uses this category when calling
> display-buffer, AFAICS.  So how can users use this category to
> customize the way comint buffers are displayed?

This category is used by modes that inherit from comint-mode, e.g.:

cmuscheme.el:
  (define-derived-mode inferior-scheme-mode comint-mode "Inferior Scheme"
   ...
    (pop-to-buffer "*scheme*" display-comint-buffer-action)

inf-lisp.el:
  (define-derived-mode inferior-lisp-mode comint-mode "Inferior Lisp"
   ...
    (pop-to-buffer "*inferior-lisp*" display-comint-buffer-action)

shell.el:
  (define-derived-mode shell-mode comint-mode "Shell"
   ...
    (pop-to-buffer buffer display-comint-buffer-action)

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