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

Document argument reuse behavior in 'help printf'?

[Ulf Magnusson]

Only the manual mentions that "the format is reused as necessary to
consume all of the arguments"; it would be nice if this was in 'help
printf' too.

/Ulf