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| From: | arnold |
| Subject: | Re: [bug-gawk] Does gawk character classes follow this? |
| Date: | Wed, 13 Feb 2019 23:44:49 -0700 |
| User-agent: | Heirloom mailx 12.5 7/5/10 |
Hello.
Peng Yu <address@hidden> wrote:
> Hi,
>
> I'd like to make sure the definition of character classes in gawk. Can
> I use the following link as a reference for the definition?
>
> https://www.regular-expressions.info/posixbrackets.html
No. Read The Fine Manual.
> For example, does [:cntrl:] include \x7F?
Why don't you test it and see?
gawk 'BEGIN { print("\x7F" ~ /[[:cntrl:]]/) }'
Arnold
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