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

[Eli Zaretskii]

> Cc: 21028@debbugs.gnu.org
> From: Clément Pit--Claudel <clement.pit@gmail.com>
> Date: Sun, 18 Dec 2016 13:04:09 -0500
> 
> >   https://debbugs.gnu.org/cgi/bugreport.cgi?bug=21028#98
> > 
> > Did you try that?  What were the results?
> 
> Sorry, I missed that message.
> 
> It works!  But only for the original example (with Arial), AFAICT.  Do you 
> know what the equivalent fix would be for the recipe given in 
> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=21028#62 ?

The same: use :family and :registry instead of :name.  What did you
try?

And why does that example use 'format', but without any format spec?
What am I missing here?