cygwin/regex is non-POSIX

[Sam Steingold]

the cygwin regex is not POSIX.
backrefs are not available by default (apparently you need REG_BACKR for
that), "(a|)*" cannot be compiled because of "empty (sub)expression",
&c &c.
any plans to fix this? (e.g., by replacing it with gnu regex?)
thanks.
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Sam Steingold (http://www.podval.org/~sds) running w2k
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