Re: Question about display engine

[Eli Zaretskii]

> Date: Thu, 8 Aug 2019 10:38:04 +0200
> From: Ergus <address@hidden>
> Cc: Eli Zaretskii <address@hidden>, address@hidden
> 
> 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?

You need to read xfaces.c, the code is all there.  Feel free to ask
questions if the code doesn't speak for itself.