Jim Meyering wrote:
The combination of this and the grep -oP infloop fix make this look
like a good time for a bug-fix release. If there are any other pending
bug fixes or small+safe changes people would like to see included,
please let us know.
I have one major qualm about this: since 'grep' no longer checks whether the
input is correctly encoded, I expect this may hurt -P performance significantly
(though it may help non -P performance). This is because PCRE is slow at
checking whether input data are valid UTF-8. I just now did a brief check and
found one major performance issue:
grep -rP 'fed.*cba' .
On my machine the above command is 125x slower with the new grep than the old
one, which suggests some tuning is in order before releasing. (It's bogged down
inside libpcre somewhere.)
Since you wrote your email I did a triage of the outstanding bugs, except for
the bugs where patches are available which are mostly performance-related, and
where I expect there will be some stuff that is relevant to -P slowdown.
