On Thu, Apr 12, 2012, at 11:14 AM, John D. Hendrickson and Sara Darnell wrote: > Your problem is incorrect so there is no sol'n. > > printf 'abc def' | grep -o '^[a-z]' > > is only supposed to match against abc. > > see grep(1) about pattern matching - there is plenty of online writeups, > esp posix ieee std. see > also "ant / antlr" for more about patterns and matching. > > Jim Pryor wrote: > > The following reply was made to PR bin/166842; it has been noted by GNATS. > > From: Jim Pryor <dubious...@gmail.com> > > $ printf 'abc def' | grep -o '^[a-z]' > > will match against each of the letters in 'abc', but not against any of > > the letters in 'def'. > > dubious...@gmail.com
Hi John, I'm sorry I didn't describe the problem adequately to prevent this misunderstanding. $ printf 'abc def' | grep -o '^[a-z]' Expected output: a That is in fact the output I get from Gnu grep. Actual output on FreeBSD: a b c The matches against "b" and "c" are incorrect. -- dubious...@gmail.com _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
