David Corlette wrote:
> Not sure if this is a bug, a doc issue, or a misunderstanding as
> to what it's supposed to do, but I'm getting strange results when
> I attempt to use the "-f" option in combination with the '-P'
> option.
In the man page of grep-2.5.3 it says:
-P, --perl-regexp
Interpret PATTERN as a Perl regular expression.
This is highly experimental and grep -P may warn
of unimplemented features.
It should probably also say that it sometimes simply doesn't work.
Your grep is probably older and doesn't yet warn of the experimental
nature of -P.
Benno
