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Re: GNU Parallel Bug Reports Regression with passing zero-length paramet


From: Ole Tange
Subject: Re: GNU Parallel Bug Reports Regression with passing zero-length parameters
Date: Wed, 29 Jul 2015 02:37:01 +0200

On Wed, Jul 29, 2015 at 2:15 AM, Ole Tange <address@hidden> wrote:
> On Mon, Jul 27, 2015 at 7:20 AM, Andreas Bernauer
> <address@hidden> wrote:
>> I can confirm that the behavior has changed. I think it changed to the
>> better, though, as the colsep argument is treated according to the docs.
> :
>> The recent version allows to have 'empty' columns: your test data can
>> now be interpreted as a four-column input ['A', '', 'B', 'C'] and ['D',
>> 'E', '', 'F'], whereas with previous versions, this was impossible.
>
> Yes. And this was exactly the reason for the change. If you have any
> improvements for the documentation so this is more clear, I would love
> to see them.

It is also mentioned in the release notes for 20150622 ('L√łkke'):

* An empty argument would previously cause no string to be
  inserted. This is now changed to '' being inserted, thus prepending
  a space to the output of: parallel echo {} b ::: ''


/Ole



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