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Re: Combining face and map stuff
From: |
Stefan Monnier |
Subject: |
Re: Combining face and map stuff |
Date: |
Wed, 13 Oct 2010 08:42:20 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
>> > 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.
> So it's just a convenience feature, to avoid something like
> get existing text property value
> merge with another value
> put it back with add-text-property
> in every package?
Yes, tho it goes further than that, since the above steps still leave
some questions unanswered, e.g.:
- how to make sure all packages use the same "merge" function?
- how should a package remove its property values without also removing
the other packages's property values.
Stefan
- Re: Combining face and map stuff, (continued)
- Re: Combining face and map stuff, Eli Zaretskii, 2010/10/04
- Re: Combining face and map stuff, Miles Bader, 2010/10/04
- Re: Combining face and map stuff, Stefan Monnier, 2010/10/05
- Re: Combining face and map stuff, Eli Zaretskii, 2010/10/05
- Re: Combining face and map stuff, Stefan Monnier, 2010/10/07
- Re: Combining face and map stuff, Eli Zaretskii, 2010/10/07
- Re: Combining face and map stuff, Stefan Monnier, 2010/10/12
- Re: Combining face and map stuff, Eli Zaretskii, 2010/10/12
- Re: Combining face and map stuff, Stefan Monnier, 2010/10/12
- Re: Combining face and map stuff, Eli Zaretskii, 2010/10/13
- Re: Combining face and map stuff,
Stefan Monnier <=