[Bug 207681] [libc] re-enable regex bayer-moore for the general multibyte case

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207681

Yuri Pankov <yuripv at gmx.com> changed:

           What    |Removed                     |Added
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                 CC|                            |yuripv at gmx.com

--- Comment #2 from Yuri Pankov <yuripv at gmx.com> ---
I *think* you are reading the code wrong, see how regexec.c includes engine.c
several times, after setting different defines. With MNAMES defined, which
defines the proper XMBRTOWC, we have a "#define matcher mmatcher", and
regexec.c has the following in regexec():

        if (MB_CUR_MAX > 1)
                return(mmatcher(g, string, nmatch, pmatch, eflags));


So in multibyte case, we are using the mmatcher(), which gets defined along
with MNAMES and proper XMBRTOWC pointing to xmbrtowc() and not
xmbrtowc_dummy().

The man page bit talks specifically about *word boundaries* in multibyte
locales, not general multibyte case.

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