Message info
To:Jim Pryor From:John D. Hendrickson and Sara Darnell Subject:Re: bin/166842: bsdgrep(1) inconsistently handles ^ in non-anchoring positions Date:Thu, 12 Apr 2012 11:14:10 -0400

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 <>
> $ 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'.

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