* server.el (server-create-window-system-frame): Improved comment.

[bpt/emacs.git] / lisp / server.el

diff --git a/lisp/server.el b/lisp/server.el
index ab0dc95..c78e3e3 100644 (file)
--- a/lisp/server.el
+++ b/lisp/server.el
@@ -842,7 +842,12 @@ This handles splitting the command if it would be bigger than
     (unless (assq w window-system-initialization-alist)
       (setq w nil))
 
-    ;; Special case for ns.
+    ;; Special case for ns.  This is because DISPLAY may not be set at all
+    ;; which in the ns case isn't an error.  The variable display then becomes
+    ;; the fully qualified hostname, which make-frame-on-display below
+    ;; does not understand and throws an error.
+    ;; It may also be a valid X display, but if Emacs is compiled for ns, it
+    ;; can not make X frames.
     (if (featurep 'ns-win)
        (setq w 'ns display "ns"))