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Re: . and .. are included where they were excluded before


From: gregrwm
Subject: Re: . and .. are included where they were excluded before
Date: Tue, 26 Jan 2021 13:34:07 -0600

>
> >          . and .. are excluded from @(?|.?) in
> >          bash 4.2.46(2)-release (CentOS 7.8), but are included in
> >          bash 4.4.19(1)-release (CentOS 8.2) and
> >          bash 5.0.17(1)-release (Ubuntu 20.04/focal).
>

According to the manual, "[t]he filenames ‘.’ and ‘..’ must always be
>> matched explicitly even if dotglob is set." I don't see any subsequent
>> text that overrules this for extended globs.
>> https://www.gnu.org/software/bash/manual/html_node/Filename-Expansion.html
>>
>> vq
>>
>>
> Indeed, nor should you...  @(?|.?) should never ignore '..', owing to the
> presence of the .? pattern which explictly matches...
>
> --
> Kerin Millar
>
>
you're calling .. an explicit match to .?
i'd interpret explicit match to mean .. wouldn't match anything other than
itself (notwithstanding it's been otherwise for over a decade)

>          but that's a bit askew from what actually interests me.  if i had
> > my druthers, there would be an option to set so . and .. would never
> match
> > any (sub)glob other than their literal selves (even with dotglob set).
>
> As Kerin Millar said, you can use GLOBIGNORE for this.
>

indeed that's exactly what i was looking for, thank you lawrence, kerin,
and chet


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