GNU bug report logs - #73018
31.0.50; wdired + replace-regexp only modifies the visible portion of the buffer

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From: Juri Linkov <juri <at> linkov.net>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: Madhu <enometh <at> meer.net>, 73018 <at> debbugs.gnu.org
Subject: bug#73018: 31.0.50; wdired + replace-regexp only modifies the visible portion of the buffer
Date: Thu, 05 Sep 2024 19:51:48 +0300

>> So you prefer to slow down only when the user types C-s?
>> This is possible by adding a local hook in
>> wdired-change-to-wdired-mode:
>>
>>   (add-hook 'isearch-mode-hook #'font-lock-ensure nil t)
>
> A step back: I now tried to reproduce the recipe, but I only see the
> clobbered match data error (randomly) - I don't see only the visible
> buffer portion operated on.  With other words: I can't reproduce the
> issue, at least not with the "visible buffer portion" interpretation,
> and I don't see that we would need to call `font-lock-ensure' at all.

Maybe this is reproducible only on very long Dired buffers?

> Second: I'm confused.  Apparently, when `dired-isearch-filenames-mode'
> is on, why do `search-forward-regexp' and `replace-regexp' behave
> differently?  `search-forward-regexp' does find matches outside of file
> names that `replace-regexp' ignores.

`replace-regexp' uses Isearch functions,
`search-forward-regexp' is a core function that doesn't use Isearch.

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