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1995-03-09
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This is a version of the "nearly-public-domain" regexp(3) regular expression
matching library by Henry Spencer, I have modified it slightly to meet my
needs, this is what I've done,
1) if "__STDC__" is defined ANSI function prototypes are used, this is
so a register based call-interface is possible.
2) added a new function regsublen(), this performs a dry run of the
regsub() function returning the length of the string needed to hold
the output from regsub().
3) changed regexec(prog,str) to regexec2(prog,str,eflags) with macro for
regexec(). This is so I can have the flag REG_NOTBOL which signifies
that the string passed to regexec[2]() is not actually the start of a
line.
4) support for case-insignificant matching (with the flag REG_NOCASE)
John