On 8/10/21 4:21 PM, Gary Johnson wrote:
$ src/grep --file=in in >out
$ echo $?
1
$ od -t o1 in
0000000 360 220 220 205 012
0000005
$ cmp in out
cmp: EOF on out which is empty

OK, so grep is simply not finding a match.

At this point it's probably time to fire up a debugger and see why grep's matchers are saying "no match". That would require some debugging expertise and time, though; do you have those available?



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