bug#20984: 25.0.50; Combining accents don't display properly in certain fonts

[handa]

In article <83fv52wnb8.fsf@gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:

> > Yes. Investigating the weird combination yields this on the description 
> > buffer:
> > Composed with the following character(s) "̀" using this font:
> >   xft:-adobe-Source Code Pro-normal-normal-normal-*-13-*-*-*-m-0-iso10646-1
> > by these glyphs:
> >   [0 1 0 626 8 1 6 8 -3 nil]
> >   [0 1 0 734 0 1 5 11 -9 [0 0 0]]

I tried that font on my Lubuntu system with Emacs 24.5 and the latest
trunk version.  I see no problem with 24.5, i.e. a-grave is correctly
displayed, but see the same problem as yours with trunk version.

So, it seems that something was broken recently.

---
K. Handa
handa@gnu.org