Fix documentation of 'menu-set-font' and 'set-frame-font'

* lisp/menu-bar.el (menu-set-font): Doc fix.  (Bug#21303)

* doc/lispref/frames.texi (Frame Font): Document that
set-frame-font with the last argument 't' will also make the font
the default for the future GUI frames.

2 files changed, 4 insertions, 2 deletions

diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi
index 91c512c0ab4..65eeec6aea2 100644
--- a/doc/lispref/frames.texi
+++ b/doc/lispref/frames.texi
@@ -744,7 +744,7 @@ frame fixed by adjusting the number of lines and columns.
 If the optional argument @var{frames} is @code{nil}, this applies the
 font to the selected frame only.  If @var{frames} is non-@code{nil}, it
 should be a list of frames to act upon, or @code{t} meaning all existing
-graphical frames.
+and all future graphical frames.
 @end deffn
 
 
diff --git a/lisp/menu-bar.el b/lisp/menu-bar.el
index 6a2ff630698..d57ba742113 100644
--- a/lisp/menu-bar.el
+++ b/lisp/menu-bar.el
@@ -652,7 +652,9 @@ by \"Save Options\" in Custom buffers.")
 ;; Function for setting/saving default font.
 
 (defun menu-set-font ()
-  "Interactively select a font and make it the default on all existing frames."
+  "Interactively select a font and make it the default on all frames.
+
+The selected font will be the default on both the existing and futire frames."
   (interactive)
   (set-frame-font (if (fboundp 'x-select-font)
                       (x-select-font)