lisp/facemenu.el: Slightly expand a comment in `list-colors-duplicates'.

958ad486 · Juanma Barranquero · c1ebb47e · 958ad486
Commit 958ad486 authored Oct 24, 2011 by Juanma Barranquero
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lisp/facemenu.el lisp/facemenu.el +2 -0

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--- a/lisp/facemenu.el
+++ b/lisp/facemenu.el
@@ -645,6 +645,8 @@ a list of colors that the current display can handle."
               ;; text in menu entries) and `SystemWindowText' (the default
               ;; color w32 uses for the text in windows and dialogs) may
               ;; be the same display color and be adjacent in the list.
+               ;; These system colors all have names prefixed with "System",
+               ;; which is hardcoded in w32fns.c (SYSTEM_COLOR_PREFIX).
               ;; This makes them different to any other color.  Bug#9722
 	       (not (and (eq system-type 'windows-nt)
 			 (string-match-p "^System" (car (car l))))))