Hi,
sorry for producing such a spam, there was huge 7h delay between my mail
and the reply from the mailing list, so I thought something was not sent
correctly on my side.

>EGexecute should return a match, though,
>right? The pattern '\a' matches
>the data 'a'. So the bug is in EGexecute >somewhere, not in its caller.
Thanks for the reply. In my opinion the bug is not in the EGexecute, since
it uses re_search (from gnulib) and the re_search is not returning a match.
So there is no problem in EGexecute. I also compared python re.search with
\a also don't return a match and I found \a can be interpreted a bell or
alarm.
It's good to mention that the lack of match happens for all lowercase
characters that are not defined in regex (for example echo "j" | grep -i
--color '\j'. Comparing to python, they don't allow us to escape any
incorrect lowercase characters, for example:
>>>re.search("\j","j", re.IGNORECASE)
re.error: bad escape \j at position 0
Due to that I think grep should also ignore the non-maching/bad character
instead of printing them.

Best regards,
Tomasz Dziendzielski

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