From: Michael Olson <mwolson@gnu.org>
To: emacs-devel@gnu.org
Subject: Re: typo in accept-process-output (process.c)
Date: Mon, 06 Aug 2007 16:50:45 -0400 [thread overview]
Message-ID: <87vebsidzu.fsf@hariken.mwolson.org> (raw)
In-Reply-To: E1II3Qs-0000lI-4C@fencepost.gnu.org
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Richard Stallman <rms@gnu.org> writes:
> So the job only has to be done once, what replacement will people
> be happy with? Personally, I think plain "if" would be just fine,
> except perhaps to the tediously literal-minded.
>
> In some cases, just "if" is clear.
>
> Failing that, "only if". As a last resort, "if and only if"
> (yuck).
>
> Where just "if" is not clear, you need to get creative. Find a
> rewrite which is clear. "If and only if" is ok when you need it, but
> since it is a bit longer, you might look for a better method.
The conditionals "only if" and "if" are both unidirectional, whereas "if
and only if" is bidirectional. If you want to preserve the logic, it is
best to change "iff" to "if and only if". It's not nearly as gross as
changing the meaning would be.
--
Michael Olson -- FSF Associate Member #652 |
http://mwolson.org/ -- Jabber: mwolson_at_hcoop.net | /` |\ | | |
Sysadmin -- Hobbies: Lisp, GP2X, HCoop | |_] | \| |_|
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next prev parent reply other threads:[~2007-08-06 20:50 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-05 12:04 typo in accept-process-output (process.c) Dieter Wilhelm
2007-08-05 12:21 ` David Kastrup
2007-08-05 20:01 ` Glenn Morris
2007-08-05 22:54 ` Dieter Wilhelm
2007-08-06 0:06 ` Nick Roberts
2007-08-06 6:41 ` Dieter Wilhelm
2007-08-06 14:19 ` Richard Stallman
2007-08-06 20:50 ` Michael Olson [this message]
2007-08-07 11:02 ` Stephen Berman
2007-08-07 11:18 ` David Kastrup
2007-08-07 11:31 ` Jason Rumney
2007-08-07 16:37 ` Stefan Monnier
2007-08-07 17:33 ` Drew Adams
2007-08-07 22:01 ` Dieter Wilhelm
2007-08-07 22:17 ` Lennart Borgman (gmail)
2007-08-07 23:16 ` Drew Adams
2007-08-08 0:06 ` Jason Rumney
2007-08-08 0:21 ` Drew Adams
2007-08-09 0:07 ` Richard Stallman
2007-08-08 3:06 ` Eli Zaretskii
2007-08-08 5:50 ` Dieter Wilhelm
2007-08-08 18:43 ` Eli Zaretskii
2007-08-08 20:14 ` David Kastrup
2007-08-08 20:24 ` Stefan Monnier
2007-08-08 20:27 ` martin rudalics
2007-08-08 20:53 ` Stefan Monnier
2007-08-12 20:33 ` Christian Schlauer
2007-08-12 22:01 ` Stephen Berman
2007-08-13 5:00 ` Richard Stallman
2007-08-05 20:54 ` Richard Stallman
2007-08-08 7:54 ` Glenn Morris
2007-08-09 0:07 ` Richard Stallman
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