bug#22609: 24.5; Different Font display for windows32 implementation

[Eli Zaretskii]

> From: Andy Moreton <andrewjmoreton@gmail.com>
> Date: Wed, 10 Feb 2016 00:00:34 +0000
> 
> That codepoint is in the private-use area of Unicode, so I woud not
> expct it to work (however I am far from expert in this area).

As I wrote elsewhere, this is true.  That font does quite a few things
Emacs doesn't like.

> You may need to add the font to a fontset for the needed range of
> codepoints.
> 
> For example, adding this to default fontset shows the desired character
> in the header line:
> 
> (set-fontset-font t '(#xf000 . #xf0e7) (font-spec :name "github-octicons"))

Yes, this is the solution in such cases.

Thanks.