Function: custom-facep
custom-facep is a function alias for facep, defined in faces.el.gz.
This function is obsolete since 28.1; use facep instead.
Signature
(custom-facep FACE)
Documentation
Return non-nil if FACE is a face name; nil otherwise.
A face name can be a string or a symbol.
Aliases
prolog-face-name-p (obsolete since 28.1)
custom-facep (obsolete since 28.1)
viper-get-face (obsolete since 27.1)