Re: Question about display engine

[Eli Zaretskii]

> Date: Tue, 3 Sep 2019 13:23:37 +0200
> From: Ergus <address@hidden>
> Cc: Eli Zaretskii <address@hidden>, address@hidden
> 
> I found also that we where very concerned about what happen when
> merging, but there was not any comment about face_id changes in other
> cases (like reassign).
> 
> For example, when we select a word in the middle of a line. The
> extend_face will be set to the region face when the iterator iterates
> throw the word, but then it shouldn't be extended at EOL.

We need to recalculate extend_face_id at the same places where we
recalculate face_id.

> maybe we should test only the last face in the line before EOL to check
> for the extend flag; but then the extend_face_id will be again an
> intrinsic parameter of that face.

How do you know it's "the last face"?