bug#15273: 24.3.50; Combining character sequences are displayed weirdly

[Eli Zaretskii]

> From: Jan Djärv <jan.h.d@swipnet.se>
> Date: Thu, 5 Sep 2013 19:33:04 +0200
> Cc: xfq.free@gmail.com,
>  15273@debbugs.gnu.org
> 
> Hello.
> 
> 5 sep 2013 kl. 19:24 skrev Eli Zaretskii <eliz@gnu.org>:
> 
> > On one OSX system, the result of "! C-x 8 RET 2 0 E 4 RET" _looks_
> > like a single character, but actually isn't: I can move cursor twice
> > across the result, and "C-u C-x =" doesn't show the composition
> > results.  Is that what you see?
> 
> Yes.

Thanks.  So this is not a composition at all, and the wicked way the
triangle is displayed is not Emacs's fault at all.  I guess the font
used by NS or the font driver are at fault here.  FWIW, on MS-Windows,
I see the ! and the triangle after it correctly, as 2 separate
characters (using Code2000 font).