GNU bug report logs - #40968
28.0.50; (apply nil)

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Message #125 received at 40968 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Eli Zaretskii <eliz <at> gnu.org>, Drew Adams <drew.adams <at> oracle.com>
Cc: mattiase <at> acm.org, 40968 <at> debbugs.gnu.org, stefan <at> marxist.se,
 npostavs <at> gmail.com, pipcet <at> gmail.com
Subject: RE: bug#40968: 28.0.50; (apply nil)
Date: Tue, 2 Jun 2020 10:10:09 -0700 (PDT)

> We will not require minimum 2 args because that would be backward
> incompatible.  I'm quite sure I already said that before.

Yes, you did, as I indicated: "The only good
case presented was to say that this would be
an incompatible change."

In expressing my non-inclusion in the purported
"consensus", that's all I did.

And "because XYZ would be backward incompatible"
has not stopped Emacs from sometimes breaking
backward compatibility.  That's a good reason,
as I said, but there are also (IMO) good reasons
not to go with that one good reason.

My suggestion is to not only "recommend always
passing 2 or more arguments" but to issue a
warning when that's not the case.  And to
deprecate that use (letting users know that at
some point it might no longer be supported).

And (IMO) the reason given to users for the
recommendation shouldn't be just because ("as")
"the function works faster in that case".

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