GNU bug report logs - #50110
26.3; Doc of `assoc': TESTFN optional arg

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Package: emacs;

Reported by: Drew Adams <drew.adams <at> oracle.com>

Date: Wed, 18 Aug 2021 17:37:02 UTC

Severity: minor

Found in version 26.3

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #8 received at 50110 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 50110 <at> debbugs.gnu.org
Subject: Re: bug#50110: 26.3; Doc of `assoc': TESTFN optional arg
Date: Wed, 18 Aug 2021 20:50:06 +0300

> From: Drew Adams <drew.adams <at> oracle.com>
> Date: Wed, 18 Aug 2021 17:36:11 +0000
> 
> Neither the `assoc' doc string nor the Elisp manual, node `Association
> Lists' explains the order of the args that get passed to TESTFN.

It's a function that tests 2 objects for equality, so why does the
order matter?

> It's just as reasonable to expect that the pattern is the first arg to
> TESTFN, instead of, as is actually the case, the second arg.

There's no "pattern" in the doc string, so I don't think I understand
what you are describing here.
This bug report was last modified 3 years and 340 days ago.

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