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I am using C/C++ Runtime Library's regexec() function(s), called from ILE
RPG programs.
Documentation tells this complies with the POSIX regex engine syntax. Can
someone let me know, please, where is probably the best documentation about
the exact syntax that regexec() will match a regular expression, in terms
of POSIX compliance?
I've found some comments about shortcuts not being supported. For example,
"\d+" is supposedly not supported, and instead one should use "[0-9]+".
But, if I use the former regex, regcomp() compiles ok, but regexec() does
not match any single digit sequence like "123456789", until I use "[0-9]+"
. I think if it's not supported, regcomp() it shouldn't even succeed.
It's very likely this may not be the place to ask. Please advise also if
so.
Thanks in advance.
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