bug#39554: 27.0.50; cairo not composing sequences

[YAMAMOTO Mitsuharu]

On Fri, 14 Feb 2020 09:58:05 +0900,
James Cloos wrote:
> 
> >>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
> 
> EZ> I don't think I agree.  This font has problems with combining accents,
> 
> if xft is to be depricated in favour of cairo, then anything which works
> in xft but fails in cairo is be definition a regression.
> 
> and ir works perfectly irrespective of font with xft.
> 
> so the fact that --with-cairo gets it wrong is indisputably a regression
> in emacs on x11.

I guess the difference comes from with vs. without HarfBuzz rather
than cairo vs. xft.  Could you check if that is the case on your
environment?

                                     YAMAMOTO Mitsuharu
                                mituharu@math.s.chiba-u.ac.jp