[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Does gawk manual mention how an empty regex should be handled?
|
From: |
arnold |
|
Subject: |
Re: Does gawk manual mention how an empty regex should be handled? |
|
Date: |
Wed, 31 Mar 2021 12:21:34 -0600 |
|
User-agent: |
Heirloom mailx 12.5 7/5/10 |
I have updated the documentation and pushed to the git repo.
Thanks,
Arnold
Arkadiusz Drabczyk <arkadiusz@drabczyk.org> wrote:
> TIL that empty regex matches any string:
>
> $ awk 'BEGIN { print "abc" ~ "" }'
> 1
> $ awk 'BEGIN { print "abc" ~ // }'
> 1
>
> It can also be reproduced with mawk, Busybox awk and FreeBSD
> awk. However, I wasn't able to find an explanation of that behavior in
> the gawk manual. Is it actually documented somewhere?
>
> --
> Arkadiusz Drabczyk <arkadiusz@drabczyk.org>