From: "Davis Herring" <herring@lanl.gov>
To: "Drew Adams" <drew.adams@oracle.com>
Cc: 'Tim Cross' <theophilusx@gmail.com>,
emacs-devel@gnu.org,
'Philipp Haselwarter' <philipp.haselwarter@gmx.de>
Subject: RE: Eliminating a couple of independent face definitions
Date: Tue, 8 Feb 2011 07:34:39 -0800 (PST) [thread overview]
Message-ID: <44495.130.55.118.19.1297179279.squirrel@webmail.lanl.gov> (raw)
In-Reply-To: <5D5B90DE294D40CCAD7F3B1208A112E7@us.oracle.com>
>> Having D copy from B is equivalent to having them both
>> inherit from a new face A with B's previous definition.
>
> It is certainly not equivalent.
> Just customize A to see the difference.
But A didn't exist before, so that's a new feature, not a difference per
se. If we wanted, we could prevent the user from even knowing about A
(have `customize-face' not support it), and they would be equivalent. So
surely this is better...?
>> With the inheritance, the user does have the option
>> to change both of them at once if desired.
>
> Precisely why they are not equivalent. Read the thread, if you have not
> already, for why inheritance is not the be-all and end-all.
I'm quite surprised that you didn't leap at this idea. Since when is
offering the user a choice a bad thing? If they don't want to customize
A, they won't, and they'll then have exactly the same set of options that
the copying idea would give them.
Now, I must say that I've realized an imperfection in my idea: if Emacs
defines D but not B (and thus no one bothers to make A), an external
package that defines B must either inherit from D or copy-paste its
definition. But faces in Emacs that seem worthy of inheritance by anyone
may be mechanically transformed into D-A pairs to avoid the problem.
>> And we already have inheritance.
>
> Hammer...nail.
David J. Wheeler might disagree. (And you were talking about how it might
be non-trivial to implement the copying idea.)
Davis
--
This product is sold by volume, not by mass. If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during
shipping.
next prev parent reply other threads:[~2011-02-08 15:34 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-02 4:05 Eliminating a couple of independent face definitions Chong Yidong
2011-02-02 4:11 ` Lennart Borgman
2011-02-02 5:02 ` Tim Cross
2011-02-02 15:15 ` Drew Adams
2011-02-02 17:17 ` Chong Yidong
2011-02-02 20:33 ` Philipp Haselwarter
2011-02-02 23:01 ` Lennart Borgman
2011-02-03 19:10 ` Drew Adams
2011-02-04 0:12 ` Tim Cross
2011-02-05 22:11 ` Drew Adams
2011-02-07 0:59 ` Drew Adams
2011-02-07 1:30 ` Tim Cross
2011-02-07 14:09 ` Drew Adams
2011-02-07 21:14 ` Tim Cross
2011-02-07 22:12 ` Drew Adams
2011-02-08 3:51 ` Tim Cross
2011-02-08 15:26 ` Drew Adams
2011-02-08 19:10 ` Philipp Haselwarter
2011-02-08 13:58 ` Davis Herring
2011-02-08 14:33 ` Drew Adams
2011-02-08 15:34 ` Davis Herring [this message]
2011-02-08 16:16 ` Drew Adams
2011-02-08 17:40 ` Lennart Borgman
2011-02-08 19:10 ` Davis Herring
2011-02-07 1:08 ` Tim Cross
2011-02-04 0:18 ` Stephen J. Turnbull
2011-02-04 3:55 ` John Yates
2011-02-04 4:56 ` Stephen J. Turnbull
2011-02-04 4:57 ` Jambunathan K
2011-02-05 22:09 ` Drew Adams
2011-02-06 7:11 ` Stephen J. Turnbull
2011-02-04 10:26 ` Julien Danjou
2011-02-04 17:57 ` color-complement for defface (was: Eliminating a couple of independent face definitions) Ted Zlatanov
2011-02-14 18:11 ` color-complement for defface Ted Zlatanov
2011-02-20 17:44 ` Julien Danjou
2011-03-10 19:09 ` Ted Zlatanov
2011-03-10 19:11 ` Ted Zlatanov
2011-02-02 21:24 ` Eliminating a couple of independent face definitions Tim Cross
2011-02-03 16:14 ` Dan Nicolaescu
2011-02-02 17:16 ` Chong Yidong
2011-02-02 9:58 ` Štěpán Němec
2011-02-02 17:05 ` Chong Yidong
2011-02-02 10:05 ` Julien Danjou
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