From: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Robert Pluim <rpluim@gmail.com>, emacs-devel@gnu.org,
phillip.lord@russet.org.uk
Date: Mon, 24 Aug 2020 11:14:47 -0400
> The advantage of what I proposed is that it also detects the cases
> where HarfBuzz is available, but for some reason not used.
That can be useful in some cases, but I think in the present case it's
a disadvantage: we want to know what the executable (and installed
libs)
provide, rather than what the ~/.emacs chose to use.
No, we want to know what the executable and its environment, as
provided in the bundle, will yield at run time.
I agree that it might catch some irrelevant circumstances, but that's
inevitable, at least if such simple tests are being sought.