GNU bug report logs - #25017
Fwd: Re: dotimes var comiler warning

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#25017: closed (Fwd: Re: dotimes var comiler warning)
Date: Mon, 28 Nov 2016 16:33:02 +0000

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Your message dated Mon, 28 Nov 2016 17:31:49 +0100
with message-id <87k2bn1s7e.fsf <at> web.de>
and subject line Re: bug#25017: Fwd: Re: dotimes var comiler warning
has caused the debbugs.gnu.org bug report #25017,
regarding Fwd: Re: dotimes var comiler warning
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
To: bug-gnu-emacs <at> gnu.org
Subject: Fwd: Re: dotimes var comiler warning
Date: Thu, 24 Nov 2016 15:10:02 +0100

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See text below, thanks!


-------- Forwarded Message --------
Subject: 	Re: dotimes var comiler warning
Date: 	Thu, 24 Nov 2016 14:32:44 +0100
From: 	Michael Heerdegen <michael_heerdegen <at> web.de>
To: 	Andreas Röhler <andreas.roehler <at> easy-emacs.de>
CC: 	Help Gnu Emacs mailing list <help-gnu-emacs <at> gnu.org>



Andreas Röhler <andreas.roehler <at> easy-emacs.de> writes:

> when employing a form
>
> (dotimes (i erg)
>
>    ...do-something
>
>
> Compiler sends a warning "Unused lexical variable ‘i’ - whilst seems
> no way to leave out such a var.
>
> Worth a bug-report?

If none exists yet, I'm for it.  FWIW, there is a FIXME comment in the
source code already.

Yes, you can probably use `_' to suppress the warning, but I always
wondered why something called like this requires a variable to be
specified (mandatorily) at all.


Michael.

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Philipp Stephani <p.stephani2 <at> gmail.com>
Cc: andreas.roehler <at> easy-emacs.de, 25017-done <at> debbugs.gnu.org,
 Drew Adams <drew.adams <at> oracle.com>
Subject: Re: bug#25017: Fwd: Re: dotimes var comiler warning
Date: Mon, 28 Nov 2016 17:31:49 +0100

Philipp Stephani <p.stephani2 <at> gmail.com> writes:

>  For purposes of this thread: As in Emacs Lisp, both VAR
>  and COUNT are required arguments. In general, I'd prefer
>  that Emacs Lisp not diverge from but converge toward
>  Common Lisp.
>
> The (implicit) decision to diverge further from Common Lisp has been
> made a while ago, by prefixing the CL functions with `cl' and
> importing the `seq' and `map' libraries, which provide similar
> functionality, but with a different interface.

Maybe (though, I don't think there was such decision, implicit or not -
"seq" and "map" functions also have an according prefix - I wouldn't say
we are converging are diverging to/from Common Lisp at all, but give
developers a stylistic choice).  But here were are talking about a
construct that exists in pure Elisp, and OTOH also in Common Lisp,
sharing the same name.  If there is not really a need to make the
semantics differ, I prefer to leave things as they are, because
everything else would probably be more confusing than helpful.


Regards,

Michael.

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