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Re: Question about display engine

From: Ergus
Subject: Re: Question about display engine
Date: Thu, 8 Aug 2019 10:38:04 +0200
User-agent: NeoMutt/20180716

On Thu, Aug 08, 2019 at 09:25:45AM +0200, martin rudalics wrote:
And I think we need to consider the case of the region using one of
the attributes that are not in the list.

I now think it would make more sense to add an 'extend-to-window-edge'
attribute in the face definition itself.

I like that option as a concept, but it adds a new flag to a general
struct like the face for something that only affects the region face
now. But it is very general, so maybe could be useful in the future; but
it worth to make the face even more complex?.


Looking at the merge_face function could anyone please explain better
what means: realized face and lface_id and please direct me to where is
documented how emacs uses the faces internally; the functionalities
available and specially the merge rules?

Also, when looking at what
applications like Thunderbird or Firefox do, I nowhere see their
"region faces" extend to the right edges of their "windows" in "normal
text".  Admittedly, these two applications do not highlight an empty
space at the left edge of a window either and I'm fully aware of the
fact that I'm comparing apples and oranges here.  Still I think that
our users should be given the possibility to customize their regions
in a similar way as they do.


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