GNU bug report logs - #6027
23.1.96; negative arg to pcomplete-arg broken

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.1.96; negative arg to pcomplete-arg broken
Date: Sat, 24 Apr 2010 12:37:31 +0100

Is pcomplete-arg broken? If the INDEX is negative, it always return nil
(I examine this in a edebug process during which (pcomplete-arg 1)
returns correct value). The body of the function does not seem to
contain any code handling negative INDEX though the doc string however
describes exact behaviour of negative INDEX.

Thanks.

Leo

Message #8 received at 6027 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Leo <sdl.web <at> gmail.com>
Cc: 6027 <at> debbugs.gnu.org
Subject: Re: bug#6027: 23.1.96; negative arg to pcomplete-arg broken
Date: Mon, 11 Jul 2011 17:46:30 -0400

Leo wrote:

> Is pcomplete-arg broken? If the INDEX is negative, it always return nil
> (I examine this in a edebug process during which (pcomplete-arg 1)
> returns correct value). The body of the function does not seem to
> contain any code handling negative INDEX though the doc string however
> describes exact behaviour of negative INDEX.

Do you have an example of an actual problem? It basically does

(nth (- pcomplete-index index) pcomplete-args)

which looks fine to me. positive/negative indices are intepreted as
offsets to pcomplete-index, which is what the doc says.

Message #11 received at 6027 <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 6027 <at> debbugs.gnu.org
Subject: Re: bug#6027: 23.1.96; negative arg to pcomplete-arg broken
Date: Tue, 12 Jul 2011 12:33:35 +0800

On 2011-07-12 05:46 +0800, Glenn Morris wrote:
> Do you have an example of an actual problem? It basically does
>
> (nth (- pcomplete-index index) pcomplete-args)
>
> which looks fine to me. positive/negative indices are intepreted as
> offsets to pcomplete-index, which is what the doc says.

I have re-read the code and the doc-string and come to the same
conclusion as yours. I guess this bug can be closed.

Leo

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