"Stephen J. Turnbull" <turnbull(a)sk.tsukuba.ac.jp> writes:
Unfortunately, custom-set-faces is not so polite.
I know. :-(
I've never understood why custom-set-faces considers it OK to
automatically and silently reset, that is, clear, specifiers,
especially for the default face.
Because it's buggy. Even worse, it resets the properties that it
doesn't even know about.