Add/fix documentation for widget-apply

* doc/misc/widget.texi (Widget Properties): Document `widget-apply'.

* src/fns.c (Fwidget_apply): Document return value (used in many
places).

1 files changed, 1 insertions, 0 deletions

diff --git a/src/fns.c b/src/fns.c
index fc1abe8b18a..cbb6879223d 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -3093,6 +3093,7 @@ later with `widget-put'.  */)
 
 DEFUN ("widget-apply", Fwidget_apply, Swidget_apply, 2, MANY, 0,
        doc: /* Apply the value of WIDGET's PROPERTY to the widget itself.
+Return the result of applying the value of PROPERTY to WIDGET.
 ARGS are passed as extra arguments to the function.
 usage: (widget-apply WIDGET PROPERTY &rest ARGS)  */)
   (ptrdiff_t nargs, Lisp_Object *args)