Re: bash parameter expansion "doesn't like" dots?

From	Greg Wooledge <greg@wooledge.org>
Newsgroups	linux.debian.user
Subject	Re: bash parameter expansion "doesn't like" dots?
Date	2024-03-05 03:10 +0100
Message-ID	<IespH-eu2X-1@gated-at.bofh.it> (permalink)
References	(1 earlier) <Ie3Ul-eeVB-3@gated-at.bofh.it> <Ie505-efMg-1@gated-at.bofh.it> <Ie6Sd-egSW-1@gated-at.bofh.it> <Ien6F-eqKm-1@gated-at.bofh.it> <Iesg1-etKp-1@gated-at.bofh.it>
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On Tue, Mar 05, 2024 at 10:49:34AM +0900, John Crawley wrote:
> On 05/03/2024 05:27, David Wright wrote:
> > Which shell also matters. The OP appears to be using ^ to negate,
> > but ! has the advantage that it will be understood in bash and dash.
> 
> I think ^ has been deprecated recently. I failed to find a reference on the web just now though.

POSIX specifies that ! is the negation character in glob ranges, largely
because ^ used to be a synonym for | in the old Bourne shell (for the
benefit of keyboards that didn't have a convenient | character).

The use of ^ as a glob negation is a bash extension.  It's nice for
people who may not even realize that they're supposed to be using !
because they learned regular expressions first.

So, ^ isn't "deprecated".  It's just not portable to sh.

Thread

Re: bash parameter expansion "doesn't like" dots? Albretch Mueller <lbrtchx@gmail.com> - 2024-03-04 01:00 +0100
  Re: bash parameter expansion "doesn't like" dots? David Wright <deblis@lionunicorn.co.uk> - 2024-03-04 02:10 +0100
    Re: bash parameter expansion "doesn't like" dots? John Crawley <john@bunsenlabs.org> - 2024-03-04 04:10 +0100
      Re: bash parameter expansion "doesn't like" dots? David Wright <deblis@lionunicorn.co.uk> - 2024-03-04 21:30 +0100
        Re: bash parameter expansion "doesn't like" dots? John Crawley <john@bunsenlabs.org> - 2024-03-05 03:00 +0100
          Re: bash parameter expansion "doesn't like" dots? Greg Wooledge <greg@wooledge.org> - 2024-03-05 03:10 +0100
            Re: bash parameter expansion "doesn't like" dots? John Crawley <john@bunsenlabs.org> - 2024-03-05 03:30 +0100
              Re: bash parameter expansion "doesn't like" dots? Greg Wooledge <greg@wooledge.org> - 2024-03-05 04:00 +0100
                Re: bash parameter expansion "doesn't like" dots? David <bouncingcats@gmail.com> - 2024-03-05 06:30 +0100
                Re: bash parameter expansion "doesn't like" dots? Max Nikulin <manikulin@gmail.com> - 2024-03-05 12:40 +0100
            Re: bash parameter expansion "doesn't like" dots? Max Nikulin <manikulin@gmail.com> - 2024-03-05 03:40 +0100
              Re: bash parameter expansion "doesn't like" dots? John Crawley <john@bunsenlabs.org> - 2024-03-05 04:00 +0100

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