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bug#22090: Isearch is sluggish and eventually refuses further service wi


From: Artur Malabarba
Subject: bug#22090: Isearch is sluggish and eventually refuses further service with "[Too many words]".
Date: Fri, 4 Dec 2015 16:06:40 +0000

2015-12-04 15:23 GMT+00:00 Eli Zaretskii <eliz@gnu.org>:
>> Date: Fri, 4 Dec 2015 15:16:23 +0000
>> From: Artur Malabarba <bruce.connor.am@gmail.com>
>> Cc: Alan Mackenzie <acm@muc.de>, 22090@debbugs.gnu.org
>>
>> 30f3432 * lisp/character-fold.el: Remove special case-folding support
>>
>> (character-fold-to-regexp): Remove special code for
>> case-folding.  Char-fold search still respects the
>> `case-fold-search' variable (i.e., f matches F).  This only
>> removes the code that was added to ensure that f also matched
>> all chars that F matched.  For instance, after this commit, f
>> no longer matches ๐”ฝ.
>
> Thanks.  Is there any reasonably simple way of describing the
> resulting limitations (i.e. what will NOT match) on the user manual
> level?

Basically, 'a' will match similar characters (like '๐‘Ž' and 'รก') and
their upper-case equivalents (like 'ร'). 'a' will NOT match characters
similar to 'A' that don't have a lower-case equivalent (like '๐”ธ') in
the unicode standard.





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