bug#15900: 24.3.50; foreground-color-at-point returns wrong results

[Drew Adams]

> > For your solution, I can use a different predicate, but would
> > still have to find all faces at point, no?  What do I miss?
> 
> I don't know, and I don't know what am I missing, either.
> 
> When you say "all the faces at point", what exactly do you mean by
> that?  There can only be one 'face' text property at point, so do
> you mean faces that come from overlays?  If that is what you mean,
> then why isn't get-char-property all you need to have your answer?
> I feel I'm missing something very basic here.

I think he means that the value of property `face' (whether from
a text property or an overlay property) can be a list of faces.
Normally, the attributes of the faces in the list are merged for
display.  See (elisp) `Special Properties' and (elisp `Overlay
Properties'.