GNU bug report logs - #36418
26.2.90; mapconcat "SEPARATOR must be a string." is incorrect

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Message #13 received at 36418-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 36418-done <at> debbugs.gnu.org, mail <at> xuchunyang.me
Subject: Re: bug#36418: 26.2.90;
 mapconcat "SEPARATOR must be a string." is incorrect
Date: Sat, 06 Jul 2019 10:32:51 +0300

> From: Stefan Kangas <stefan <at> marxist.se>
> Date: Sat, 6 Jul 2019 06:17:08 +0200
> Cc: 36418 <at> debbugs.gnu.org
> 
> > C-h S mapconcat says
> >
> >> SEPARATOR, which also must be a string, or a vector or list of
> >> characters.
> >
> > C-h f concat says
> >
> >> Each argument may be a string or a list or vector of characters (integers).
> 
> In other words, since SEPARATOR can be a "list of characters", it
> follows that it can also be nil (which is equivalent to the empty list).

Right, I fixed the doc string.

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