Re: How to get the actual face attribute?

[Yuan Fu]

> On Jun 21, 2020, at 10:52 AM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> From: Yuan Fu <casouri@gmail.com>
>> Date: Sun, 21 Jun 2020 00:01:37 -0400
>> 
>> When writing my package I need to get height of the face at point. But 
>> `face-attribute` doesn’t take face remapping into account, which gives wrong 
>> answers. Is there a reliable way to get the actual face attribute that’s 
>> used for display? Thanks.
> 
> From Lisp or from C?

From Lisp.

> 
> In general, you cannot know that except by displaying that text or
> emulating its display, because the face is fully realized only while
> displaying text that is affected by the face.
> 

I see, then I will use some ad-hoc check to produce a mostly-right answer. 
Thanks.

Yuan