bin/166842: bsdgrep(1) inconsistently handles ^ in non-anchoring
John D. Hendrickson and Sara Darnell
johnandsara2 at cox.net
Thu Apr 12 15:14:09 UTC 2012
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 <dubiousjim at 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'.
> dubiousjim at gmail.com
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