Re: Some globstar patterns produce duplicate entries and a null filename

[Roman Rakus]

On 12/05/2012 04:07 AM, Chet Ramey wrote:
> On 12/1/12 10:41 AM, Ulf Magnusson wrote:
> > GNU bash, version 4.2.24(1)-release (i686-pc-linux-gnu)
> >
> > Take the following example, assumed to be run in an empty directory:
> >
> > $ mkdir a
> > $ echo **
> > a
> > $ echo **/**
> >   a a
> > $ echo **/**/**
> >   a a a
> >
> > I would expect the result to be just 'a' in all cases.
> >
> > You also get back a null filename, as shown by
> >
> > $ for f in **/**/**; do echo "'$f'"; done
> > ''
> > 'a'
> > 'a'
> > 'a'
>
> Thanks for the report.  This is definitely a problem.  It will be fixed
> in the next version of bash, and may be released as a future patch.  I've
> attached a patch for you to test; it fixes the problem for me without
> introducing any new errors.
>
> Chet
Works well when used up to 2 levels of ** - ** and **/** is fixed.
However still produce duplicates, when used more levels - **/**/**. Also 
produce duplicates for **/a/** form.

Attaching script which I use for testing.

RR

test.sh
Description: application/shellscript