Index: flyspell.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/textmodes/flyspell.el,v
retrieving revision 1.122
diff -b -u -w -r1.122 flyspell.el
--- flyspell.el	13 Aug 2007 13:40:48 -0000	1.122
+++ flyspell.el	30 Aug 2007 15:33:39 -0000
@@ -66,12 +66,22 @@
   :type 'boolean)
 
 (defcustom flyspell-mark-duplications-flag t
-  "Non-nil means Flyspell reports a repeated word as an error.
+  "Non-nil means Flyspell treats repeated words as errors.
+See `flyspell-mark-duplications-exceptions' to add exceptions to this rule.
 Detection of repeated words is not implemented in
 \"large\" regions; see `flyspell-large-region'."
   :group 'flyspell
   :type 'boolean)
 
+(defcustom flyspell-mark-duplications-exceptions
+  '(("francais" . ("nous" "vous")))
+  "A list of exception for duplicated words.
+It should be a list of (LANGUAGE . EXCEPTION-LIST).  LANGUAGE is matched
+against the current dictionary and EXCEPTION-LIST is a list of strings.
+The duplicated word is downcased before it is compared with the exceptions."
+  :group 'flyspell
+  :type '(alist :key-type string :value-type (repeat string)))
+
 (defcustom flyspell-sort-corrections nil
   "Non-nil means, sort the corrections alphabetically before popping them."
   :group 'flyspell
@@ -1022,6 +1032,13 @@
 		     (and (> start (point-min))
 			  (not (memq (char-after (1- start)) '(?\} ?\\)))))
 		 flyspell-mark-duplications-flag
+		 (not (catch 'exception
+			(dolist (except flyspell-mark-duplications-exceptions)
+			  (and (string= (or ispell-local-dictionary
+					    ispell-dictionary)
+					(car except))
+			       (member (downcase word) (cdr except))
+			       (throw 'exception t)))))
 		 (save-excursion
 		   (goto-char start)
 		   (let* ((bound