bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014).

[Eli Zaretskii]

> Cc: 21028@debbugs.gnu.org
> From: Clément Pit--Claudel <clement.pitclaudel@live.com>
> Date: Sun, 12 Mar 2017 07:38:13 -0400
> 
> Any news on this?

Not yet, sorry.  Having to install an OS is a bug turn-off for me.  I
will try reproducing on my system with the font you mentioned.

> Is there anything more than I can do to help fix this issue?

If you can come up with a recipe that doesn't require a particular OS
and font back-end, it will help a lot.