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Re: [bug-gawk] gawk 4.1.3 gensub() warning
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From: |
arnold |
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Subject: |
Re: [bug-gawk] gawk 4.1.3 gensub() warning |
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Date: |
Thu, 03 Sep 2015 06:34:42 -0600 |
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User-agent: |
Heirloom mailx 12.4 7/29/08 |
Ed Morton <address@hidden> wrote:
> I'm seeing this new warning in gawk 4.1.3 executing existing scripts:
>
> $ echo 'a' | gawk '{print gensub(/a/,"b","")}'
> gawk: cmd. line:1: (FILENAME=- FNR=1) warning: gensub: third argument `'
> treated
> as 1
> b
>
> This will impact a ton of scripts, like if sed suddenly started issuing
> warnings
> if you wrote `s/foo/bar/` instead of `s/foo/bar/1`. Is it here to stay?
>
> Ed.
The warning is indeed here to stay. Use of "" is wrong; you should
supply a numeric 1 there. Fix your scripts.
Arnold