From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org, miles@gnu.org
Subject: Re: Combining face and map stuff
Date: Tue, 12 Oct 2010 16:23:57 -0400 [thread overview]
Message-ID: <jwvpqvfjh5i.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83sk0bkz31.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 12 Oct 2010 21:09:22 +0200")
>> Package foo wants to add `face' stuff and package bar also wants to add
>> `face' stuff. If both add it to the same piece of text, we have
>> a problem, and if they want to update it later they have to know who
>> "owns" the particular value (i.e. who it comes from) to know whether it
>> should be updated or not.
> In that case, I'm sorry, but I must ask the same question again: how
> will the display engine know which face to display?
> Let's say we have a buffer, in which both package foo and package bar
> defined different faces for the same piece of text. Which one of them
> will be displayed, and how would the display engine know to choose it?
Internally, one of them sets the property (foo . face) to <face1>, the
other one sets the property (bar . face) to <face2>, and when these are
set, the `face' property gets set to (<face1> <face2>). The display
engine only looks at the `face' property, just as before.
Stefan
next prev parent reply other threads:[~2010-10-12 20:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-02 14:21 Combining face and map stuff Lars Magne Ingebrigtsen
2010-10-02 16:21 ` Chong Yidong
2010-10-02 16:41 ` Lars Magne Ingebrigtsen
2010-10-03 2:04 ` Miles Bader
2010-10-03 4:16 ` Chong Yidong
2010-10-03 13:08 ` Lars Magne Ingebrigtsen
2010-10-03 23:37 ` Stefan Monnier
2010-10-04 7:56 ` Eli Zaretskii
2010-10-04 9:03 ` Miles Bader
2010-10-04 9:42 ` Eli Zaretskii
2010-10-05 0:12 ` Miles Bader
2010-10-05 23:43 ` Stefan Monnier
2010-10-06 3:57 ` Eli Zaretskii
2010-10-07 7:40 ` Stefan Monnier
2010-10-07 13:56 ` Eli Zaretskii
2010-10-07 18:08 ` Stefan Monnier
2010-10-12 19:09 ` Eli Zaretskii
2010-10-12 20:23 ` Stefan Monnier [this message]
2010-10-13 11:41 ` Eli Zaretskii
2010-10-13 12:42 ` Stefan Monnier
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