Re: face cache referred to but not explained

[Eli Zaretskii]

> From: "Drew Adams" <address@hidden>
> Date: Mon, 5 Jun 2006 08:52:58 -0700
> 
> Can we at least get a description of what the face cache _is_? (What it
> does? What it is for?)

It's an obscure internal detail that is of no interest neither to
users nor to Lisp programmers.

In general, any cache is introduced to speed up certain frequent
operations by eliminating the need for recomputing something
expensive; I'm sure you know that already, as do most programmers.
Why a cache is needed in this particular case and how it is managed,
are issues that no one except redisplay hackers should care about.
IMHO, of course.