Re: When and how to register various font backends

[Eli Zaretskii]

> From: Robert Pluim <address@hidden>
> Cc: Eli Zaretskii <address@hidden>,  address@hidden
> Date: Fri, 14 Jun 2019 13:52:28 +0200
> 
> Whilst such an ability to change font backends is cool, I really donʼt
> see it being very much used: as I said in my other message, in the
> long term only the HarfBuzz backend will be supported, so I donʼt see
> any need to add such infrastructure.

In addition to what I already wrote on this matter, there's one more
consideration we should keep in mind: Emacs should never put all of
its eggs into a single basket.  As active as HarfBuzz development is
today, that could change in the future for reasons beyond our
control.  So we should keep the mechanism of using more than a single
font backend, in case we will need to make another change such as the
one we did now with HarfBuzz.