GNU bug report logs - #74246
[PATCH] Reuse display windows in image-dired

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From: Morgan Smith <Morgan.J.Smith <at> outlook.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: martin rudalics <rudalics <at> gmx.at>, 74246 <at> debbugs.gnu.org, stefankangas <at> gmail.com
Subject: bug#74246: [PATCH] Reuse display windows in image-dired
Date: Wed, 27 Nov 2024 19:32:43 -0500

[Message part 1 (text/plain, inline)]

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

> Ping! Morgan, could you please try Martin's suggestions and report
> back?
>
>>
>> FWIW, I would rewrite 'image-dired-display-image' as the (largely
>> untested)
>>
>> (defun image-dired-display-image (file &optional _ignored)
>>    "Display image FILE in the image buffer window.
>> If FILE is an image, the window will use `image-dired-image-mode'
>> which is based on `image-mode'."
>>    (declare (advertised-calling-convention (file) "29.1"))
>>    (setq file (expand-file-name file))
>>    (when (not (file-exists-p file))
>>      (error "No such file: %s" file))
>>    (let* ((buffer (get-buffer-create image-dired-display-image-buffer))
>> 	 (window (get-buffer-window buffer)))
>>      (find-file-noselect-1 buffer file nil t nil nil)
>>      (with-current-buffer buffer
>>        (if (string-match (image-file-name-regexp) file)
>>            (image-dired-image-mode)
>>          ;; Support visiting PDF files.
>>          (normal-mode)))
>>
>>      (unless window
>> 	(display-buffer buffer))))
>>
>> instead of doing all that 'kill-buffer' (which could delete the selected
>> window as a side-effect so the final 'select-window' will throw an
>> error) 'rename-buffer' rigmarole.
>>
>> martin

I initially explored this option but was weary to use
'find-file-noselect-1` as it looks like it should be an internal
function and is used only in the file it's defined in.

However, I do like this solution the most.  Attached is a patch almost
identical to the proposed function.  The proposed function would be
perfect if it contained the line '(display-buffer buffer t)'.

Morgan

[0001-Reuse-display-windows-in-image-dired-bug-74246.patch (text/x-patch, attachment)]

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