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From: Drew Adams <drew.adams@oracle.com>
To: Eli Zaretskii <eliz@gnu.org>, Paul Pogonyshev <pogonyshev@gmail.com>
Cc: emacs-devel@gnu.org
Subject: RE: Arbitrary function: find the number(s) of expected arguments
Date: Sat, 19 Mar 2016 12:21:02 -0700 (PDT)	[thread overview]
Message-ID: <cbe885f2-7820-40d6-9622-f13b2343e8b5@default> (raw)
In-Reply-To: <<83y49e731p.fsf@gnu.org>>

> We have sub-arity, so I think we should remove it and leave an alias
> that will call this new function for backward compatibility.  Having
> both sounds redundant.

(I assume you meant `subr-arity', not `sub-arity'.)

Ignoring all the rest...

This sounds wrong to me.  Just calling the new code (which I
have not looked at, but which I presume does for arbitrary
functions what `subr-arity' does for primitives) would NOT
provide backward compatibility, precisely because it would
(presumably) NOT have the same behavior as `subr-arity' for
non-primitives - it would not raise an error.

Any existing code that depends on an error being raised by
`subr-arity' would break.  E.g.,

(condition-case err
    (subr-arity 'foo)
  (error (do-something)))



  parent reply	other threads:[~2016-03-19 19:21 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-15 18:48 Arbitrary function: find the number(s) of expected arguments Paul Pogonyshev
2016-03-15 22:45 ` Davis Herring
2016-03-16  7:41   ` Paul Pogonyshev
2016-03-19 12:26     ` Paul Pogonyshev
2016-03-19 13:10       ` Eli Zaretskii
2016-03-19 13:42         ` Paul Pogonyshev
2016-03-19 13:54         ` Michael Heerdegen
2016-03-19 14:08           ` Eli Zaretskii
2016-03-19 15:20             ` Michael Heerdegen
2016-03-19 15:43               ` Eli Zaretskii
2016-03-19 15:57                 ` Michael Heerdegen
2016-03-19 16:24                   ` Eli Zaretskii
2016-03-19 17:43                     ` Michael Heerdegen
2016-03-19 17:50                       ` Eli Zaretskii
2016-03-19 17:59                         ` Michael Heerdegen
2016-03-19 18:14                           ` Eli Zaretskii
2016-03-19 16:14                 ` Philipp Stephani
2016-03-19 16:27                   ` Michael Heerdegen
2016-03-19 16:27                   ` Eli Zaretskii
2016-03-19 16:30                     ` Philipp Stephani
2016-03-19 16:32                       ` Eli Zaretskii
2016-03-19 16:34                         ` Philipp Stephani
2016-03-19 16:46                           ` Philipp Stephani
2016-03-19 16:47                           ` Eli Zaretskii
2016-03-19 17:16                             ` Philipp Stephani
2016-03-19 17:48                               ` Eli Zaretskii
2016-03-19 17:49                                 ` Philipp Stephani
2016-03-19 18:11                                   ` Eli Zaretskii
2016-03-19 18:35                                     ` Michael Heerdegen
2016-04-18 23:02                 ` Davis Herring
2016-03-19 19:52         ` Stefan Monnier
2016-03-19 20:33           ` Eli Zaretskii
2016-03-19 22:43             ` Stefan Monnier
2016-03-26 15:55           ` Elias Mårtenson
2016-03-26 17:20             ` Stefan Monnier
2016-03-19 14:26       ` Philipp Stephani
2016-03-19 16:51         ` Paul Pogonyshev
2016-03-19 18:09           ` Eli Zaretskii
2016-03-19 19:32             ` Michael Heerdegen
2016-03-19 19:39               ` Eli Zaretskii
2016-03-19 20:59                 ` Michael Heerdegen
2016-03-21 18:36             ` Paul Pogonyshev
2016-03-25  8:44               ` Eli Zaretskii
2016-03-25 16:16                 ` Paul Pogonyshev
2016-03-25 16:35                   ` Drew Adams
2016-03-25 17:16                     ` Paul Pogonyshev
2016-03-25 18:19                       ` Drew Adams
2016-03-25 18:28                         ` Clément Pit--Claudel
2016-03-25 18:51                           ` Use plain-text for mail [was: Arbitrary function: find the number(s) of expected arguments] Drew Adams
2016-03-25 18:57                             ` Use plain-text for mail [ Lars Magne Ingebrigtsen
2016-03-25 19:49                               ` Andreas Schwab
2016-03-26  1:12                             ` Use plain-text for mail [was: Arbitrary function: find the number(s) of expected arguments] Yuri Khan
2016-03-25 17:39                     ` Arbitrary function: find the number(s) of expected arguments Eli Zaretskii
2016-03-25 18:31                       ` Drew Adams
2016-03-26  8:27                   ` Eli Zaretskii
2016-03-26 11:42                     ` Paul Pogonyshev
2016-04-02  9:48                       ` Eli Zaretskii
     [not found]           ` <<83y49e731p.fsf@gnu.org>
2016-03-19 19:21             ` Drew Adams [this message]
2016-04-18 18:43               ` Davis Herring
2016-03-16  3:47 ` Stefan Monnier

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