[bug #14990] "The -P option is not supported"

[Charles Levert]

Update of bug #14990 (project grep):

                Severity:              3 - Normal => 2 - Minor              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #2:

This specific message is the result of your grep having been built with
"configure --disable-perl-regexp".  Did you have libpcre installed on your
Gentoo system when you build grep?  There is a "pcre? ( dev-libs/libpcre )"
and a "$(use_enable pcre perl-regexp)" in Gentoo's grep-2.5.1-r8.ebuild.

Support for "grep -P" is experimental and partial.  As part of a proposed
rework I am currently doing on the documentation, I have added a few days
ago:  "Interpret the pattern as a Perl regular expression.  This is highly
experimental and @samp{grep@ -P} may warn of unimplemented features."

"grep -P" is not broken, it's a work in progress.  Since there are more
fundamental bugs in grep that need to be addressed, it's also not the highest
priority.


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