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

[Michael Heerdegen via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Juri Linkov <juri@linkov.net> writes:

> 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.

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.


Michael.