(custom-display): Add checkbox for type mac.

1 files changed, 4 insertions, 0 deletions

diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index 71709cd7234..67d25b2ea7a 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -2668,6 +2668,10 @@ OS/2 Presentation Manager.")
                                            :sibling-args (:help-echo "\
 Windows NT/9X.")
                                            w32)
+                                    (const :format "MAC "
+                                           :sibling-args (:help-echo "\
+Macintosh OS.")
+                                           mac)
                                     (const :format "DOS "
                                            :sibling-args (:help-echo "\
 Plain MS-DOS.")