Add support for module functions to C-h f (Bug#30163).

* lisp/help-fns.el (help-fns-function-description-header): Handle
module functions.

* test/src/emacs-module-tests.el (module/describe-function-1): New
test.

1 files changed, 2 insertions, 0 deletions

diff --git a/lisp/help-fns.el b/lisp/help-fns.el
index 7a94d2f61ae..a592809de6a 100644
--- a/lisp/help-fns.el
+++ b/lisp/help-fns.el
@@ -642,6 +642,8 @@ Returns a list of the form (REAL-FUNCTION DEF ALIASED REAL-DEF)."
                   (concat beg "Lisp macro"))
                  ((byte-code-function-p def)
                   (concat beg "compiled Lisp function"))
+                 ((module-function-p def)
+                  (concat beg "module function"))
                  ((eq (car-safe def) 'lambda)
                   (concat beg "Lisp function"))
                  ((eq (car-safe def) 'closure)