[debbugs-tracker] bug#16421: closed (Speed-up for case-insensitive matching in multibyte locales)

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Your message dated Sun, 26 Jan 2014 08:55:01 -0800
with message-id <address@hidden>
and subject line Re: bug#16421: Speed-up for case-insensitive matching in 
multibyte locales
has caused the debbugs.gnu.org bug report #16421,
regarding Speed-up for case-insensitive matching in multibyte locales
to be marked as done.

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16421: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16421
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--- Begin Message --- Subject: Speed-up for case-insensitive matching in multibyte locales Date: Sun, 12 Jan 2014 16:09:20 +0900

Package: grep
Tags: patch

Case-insensitive matching is expensive in multi-byte locales because of
conversion of targeted text to lower case. 

However, I seem that awk which uses dfa.c as well as grep don't covert
target text to lower case. I seem that if grep don't use kwset, it
doesn't also have to convert.

If this patch is applied, when no parenthesis and/or backslash is
included in keywords (*), use of kwset and convesion of target is
avoided for case-insensitive matching in multi-byte locales, and
process for ignore-case is accomplished in dfaexec and regex.

(*) When parenthesis and/or backslash is included in keywords,
    it's converted to case-sensitive matching. (bug#16232)

grep-ignore-icase.txt
Description: Binary data

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> --- Begin Message ---
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> Subject: 
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> Re: bug#16421: Speed-up for case-insensitive matching in multibyte locales
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> Date: 
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> Sun, 26 Jan 2014 08:55:01 -0800
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> I've pushed those three commits, with a small change to the second one
> (removing the leading ^ and trailing '\$' in a regexp) to make that
> test succeed also with -F.
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> --- End Message ---