bug#55110: 29.0.50; Regression in query-replace prompt

[Augusto Stoffel]

On Wed, 27 Apr 2022 at 10:44, Juri Linkov <juri@linkov.net> wrote:

>>> Maybe this is caused by minibuffer-lazy-highlight-setup
>>> that sets filter to replace--region-filter in the minibuffer
>>> instead of the original buffer?
>>
>> Most likely, yes.  `replace--region-filter' is modified globally, so a
>> similar problem should happen if you temporarily leave the minibuffer
>> and do Isearch in any other buffer.
>>
>> If that's the case, I think we would have two options:
>>
>> 1) Add a quick fix for the minibuffer Isearch only.
>>
>> 2) A more complicated change that solves the issue generally by saving
>> the region filter in the fashion of isearch-lazy-highlight-regexp et
>> alii.
>>
>> WDYT?
>
> Recently we fixed a similar problem in `perform-replace'
> by creating a dynamically bound value in `let':
>
>   (let ((opos (point-marker))
>         ;; Restore original isearch filter to allow
>         ;; using isearch in a recursive edit even
>         ;; when perform-replace was started from
>         ;; `xref--query-replace-1' that let-binds
>         ;; `isearch-filter-predicate' (bug#53758).
>         (isearch-filter-predicate #'isearch-filter-visible))
>
> So maybe a buffer-local value of `isearch-filter-predicate'
> in the minibuffer would help.

Yes, that indeed solves the problem.  See attached patch.

> Also I recommend to make all hooks in `minibuffer-lazy-highlight-setup'
> local by adding the argument LOCAL to add-hook/remove-hook.

Indeed, the minibuffer lazy highlight feature is currently incompatible
with recursive minibuffers.  The patch fixes that as well.

There's a caveat, though: isearch in a recursive minibuffer is again
affected by the presence of an inappropriate filter function.  Fixing
that in a robust way might require a bigger refactoring of the lazy
highlight feature, I think.  Another option might be to make
`replace--region-filter' also check for the value of `(current-buffer)'.

0001-Make-minibuffer-lazy-highlight-setup-buffer-local-wh.patch
Description: Text Data