On Sat, 3 Nov 2018 21:02:19 -0700 Paul Eggert <egg...@cs.ucla.edu> wrote:
> Norihiro Tanaka wrote: > > Even the pattern has no back-references, compilation by regex run for > > each line. So Syntax errors will be detected as even your present. > > OK, but then I'm afraid I don't understand the motivation for the patch. > Perhaps if you gave a self-contained example? The examples in the original > bug report are incomplete because they're missing the pattern file; when I > tried the first one I observed this: > > $ yes 00000000000000000000000000000000000000000x | head -10 >in > $ time -p env LC_ALL=C grep -f pat in > grep: pat: No such file or directory > real 0.00 > user 0.00 > sys 0.00 Sorry, It's missing. The pattern for all cases is as following. $ seq -f '%040g' 0 9999 | sed '1s/$/\\(0\\)\\1/' >pat Norihiro
