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bug#22043: 25.0.50; search-forward and char folding


From: Eli Zaretskii
Subject: bug#22043: 25.0.50; search-forward and char folding
Date: Sun, 29 Nov 2015 21:19:42 +0200

> Date: Sun, 29 Nov 2015 11:08:41 -0800 (PST)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: 22043@debbugs.gnu.org
> 
> Isn't it correct and sufficient to say that non-regexp
> incrementalsearch uses character folding by default?

No, because "C-s RET" actually invokes a regexp search behind the
user's back when character folding or lax-whitespace are in effect,
and the user has no way of knowing whether it invoked a regexp or
non-regexp search.

> IOW, isn't this default behavior true for all incremental
> search commands except regexp search, and only for those
> commands (no non-incremental search commands)?

No.  Nonincremental vs incremental is not the issue.  The issue is
whether the search function that the command employs uses regexps or
not.  It is a limitation of how these features are implemented that
they absolutely require regexp search.





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