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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: Sat, 5 Dec 2015 18:12:52 +0000

2015-12-05 17:32 GMT+00:00 Eli Zaretskii <eliz@gnu.org>:
>> Because there are some characters in each regexp that don't have
>> lower/upper-case equivalents. For instance, if I use the
>> "\\(\\(a[Β΄`]?\\|[Γ‘Γ π‘Ž]\\)" regexp, that's enough to match A or Γ€, but
>> it's not enough to match a variety of other chars (π”Έπ•¬π– π—”π˜ˆπ˜Όπ™°πŸ„°).
>
> You don't need to match the latter set.  Character folding is applied
> _after_ case folding, not before.  So characters that don't have a
> lower-case variant simply shouldn't match a lower-case a -- and they
> won't, if you just let case-insensitive regexp matching do its job.

Given that char-folding is a new feature, how it combines with
case-folding is entirely up to us, and I have really no idea what
would be TRT.
However, if that is your opinion, I'm more than happy to accept that
the current situation ('a' doesn't match 'π”Έπ•¬π– π—”π˜ˆπ˜Όπ™°πŸ„°') is TRT,
given that it has the simplest implementation. :-)





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