GNU bug report logs - #31715
cl-incf and cl-decf error out when passed a nil-valued variable as 'offset'

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Message #17 received at 31715 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Noam Postavsky <npostavs <at> gmail.com>
Cc: Clément Pit-Claudel <clement.pitclaudel <at> live.com>,
 31715 <at> debbugs.gnu.org
Subject: Re: bug#31715: cl-incf and cl-decf error out when passed a nil-valued
 variable as 'offset'
Date: Tue, 05 Jun 2018 02:40:07 +0200

Noam Postavsky <npostavs <at> gmail.com> writes:

> Do DOCSTRING and DECL count?
>
>     (defun NAME ARGLIST &optional DOCSTRING DECL &rest BODY)
>
> Since they're obviously not evaluated, it doesn't quite feel the same.

Yes, not really.

It's not that super clear.  If we keep the current definition (though I
would rather like to see this fixed if possible), maybe consider to add
something like "If X is specified, it should be an expression that
should evaluate to a number".


Michael.

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