GNU bug report logs - #21277
char-fold isearch: how to disable

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From: Juri Linkov <juri <at> linkov.net>
To: Tassilo Horn <tsdh <at> gnu.org>
Cc: Andreas Schwab <schwab <at> suse.de>, Richard Stallman <rms <at> gnu.org>, 21277 <at> debbugs.gnu.org
Subject: bug#21277: 25.0.50; char-fold search is a screw, and I can't see how to disable
Date: Thu, 20 Aug 2015 01:17:09 +0300

> But I think the `isearch-lax-whitespace' feature can still be improved:
>
> 1. The `isearch-lax-whitespace' docstring speaks of "ordinary
>    incremental search" which I've read as "non-regex isearch".  But it
>    seems that regex isearch is also affected.  I'd just strip the
>    "ordinary".

Regexp isearch is affected by ‘isearch-regexp-lax-whitespace’.

> And IMHO, it would be a good idea to disable lax-whitespace for the
> current search as soon as the search string contains a non-space
> whitespace character.  I think if the user explicitly types C-j, C-i,
> etc. she's probably not interested in treating spaces as any-whitespace
> but wants to distinguish newlines from tabs and spaces.

Good idea - it could work the same way as case-fold search detects the presence
of uppercase chars in the search string to automatically toggle itself.

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