replacing FreeBSD's -lgnuregex with GNUlib's version

[Andrey Chernov]

On Tue, Oct 24, 2006 at 07:49:10AM -0400, Mikhail Teterin wrote:
> = Someone must test its compatibility with GNU regex and understand in 
> = details nature of their changes/fixes/differences. Without this work we 
> = can't blindly replace stable code with unknown one just for reason it is 
> = actively maintained.
> 
> What kind of test would be deemed sufficient?

I don't have anything at hand, but I saw a tests in some regex 
implementations I don't remember now. Perhaps someone else knows good 
regex test suits?

The common bottle neck is locale:
collating, multibyte and character classes handling.
I can test it excepting multibyte, our multibyte-enabled developers 
needed.

What must be tested before as primary target: general POSIX compatibility.
What must be tested in second: GNU regex compatibility.

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