Nice catch! It looks like I'm running grep 2.16. No clue why my
distro is more than four years behind. I'll whine at them. In
the meantime, let's close this bug; I can reopen it in the
unlikely event that it's still there when I get around to
upgrading.
It sounds like you've run into a bug that was fixed in grep 2.18
(2014-02-20). Please try grep 3.1, the current version. If that
doesn't work, it'd be helpful if you could give us a
reproducible test
case. Here's how I tried (and failed) to reproduce the problem
on
Fedora 27 x86-64, which has grep 3.1:
$ shuf -i 1-20000000 >rawindex
$ ls -l rawindex
-rw-r--r--. 1 eggert eggert 168888897 Apr 6 12:30 rawindex
$ time grep outgoing.*harris.*dcraw rawindex
real 0m0.069s
user 0m0.013s
sys 0m0.055s
$ time grep -i outgoing.*harris.*dcraw rawindex
real 0m0.418s
user 0m0.368s
sys 0m0.048s
$ time grep
[Oo][Uu][Tt][Gg][Oo][Ii][Nn][Gg].*[Hh][Aa][Rr][Rr][Ii][Ss].*[Dd][Cc][Rr][Aa][Ww]'
rawindex
real 0m0.416s
user 0m0.357s
sys 0m0.058s
$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
--
Geoff Kuenning ge...@cs.hmc.edu
http://www.cs.hmc.edu/~geoff/
I have always wished for my computer to be as easy to use as my
telephone; my wish has come true because I can no longer figure
out
how to use my telephone.
-- Bjarne Stroustrup
