From: Richard Stallman <rms@gnu.org>
To: Dave Abrahams <dave@boostpro.com>
Cc: emacs-devel@gnu.org
Subject: Re: Should undefined behavior be encouraged in Emacs?
Date: Mon, 03 Oct 2011 21:55:14 -0400 [thread overview]
Message-ID: <E1RAuDy-00063B-VS@fencepost.gnu.org> (raw)
In-Reply-To: <m2k48mt8c4.fsf@pluto.luannocracy.com> (message from Dave Abrahams on Mon, 03 Oct 2011 11:15:23 -0400)
> In simple cases such as (goto-char -5), users tend to see what the
> behavior is, and are likely to write code that depends on it, even if
> it isn't documented. Thus, leaving it undocumented doesn't mean that
> we can change it and nobody will notice.
If you make it a hard, inescapable error, that won't happen.
That is true; this would pressure everyone to carefully make sure not
to supply out-of-range arguments. But is that goal really more
desirable than the convenience of rounding out-of-range arguments?
--
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
Use free telephony http://directory.fsf.org/category/tel/
next prev parent reply other threads:[~2011-10-04 1:55 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-03 1:39 Should undefined behavior be encouraged in Emacs? Paul Eggert
2011-10-03 3:11 ` Stefan Monnier
2011-10-03 6:39 ` Andreas Röhler
2011-10-03 7:29 ` Stephen J. Turnbull
2011-10-03 8:58 ` Andreas Röhler
2011-10-06 2:17 ` Stephen J. Turnbull
2011-10-06 17:30 ` Richard Stallman
2011-10-06 19:49 ` Stephen J. Turnbull
2011-10-06 20:08 ` Andreas Röhler
2011-10-06 20:12 ` Lars Magne Ingebrigtsen
2011-10-06 20:46 ` Eli Zaretskii
2011-10-07 5:23 ` Andreas Röhler
2011-10-07 7:44 ` Stephen J. Turnbull
2011-10-07 7:52 ` John Wiegley
2011-10-07 17:27 ` Stephen J. Turnbull
2011-10-07 8:38 ` Alan Mackenzie
2011-10-07 15:26 ` Barry Warsaw
2011-10-07 18:06 ` ken manheimer
2011-10-07 18:21 ` Barry Warsaw
2011-10-07 18:46 ` Óscar Fuentes
2011-10-07 19:59 ` ken manheimer
2011-10-07 18:41 ` Drew Adams
2011-10-08 13:49 ` Miles Bader
2011-10-08 14:34 ` Drew Adams
2011-10-03 13:16 ` Stefan Monnier
2011-10-03 9:20 ` Alan Mackenzie
2011-10-03 9:52 ` Eli Zaretskii
2011-10-03 8:29 ` Andreas Schwab
2011-10-03 9:53 ` Eli Zaretskii
2011-10-03 13:13 ` Richard Stallman
2011-10-03 15:15 ` Dave Abrahams
2011-10-04 1:55 ` Richard Stallman [this message]
2011-10-04 2:18 ` Dave Abrahams
2011-10-03 16:14 ` Eli Zaretskii
2011-10-03 16:27 ` Andreas Schwab
2011-10-03 16:41 ` Eli Zaretskii
2011-10-04 1:55 ` Richard Stallman
2011-10-03 20:53 ` Paul Eggert
2011-10-03 14:49 ` Dave Abrahams
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