Say that we were unable to find the match within the limit

* simple.el (blink-matching-open): Say that we were unable to find
the match within the limit, if we're limited (bug#5122).

lisp/ChangeLog

 2011-07-13  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
+	* simple.el (blink-matching-open): Say that we were unable to find
+	the match within the limit, if we're limited (bug#5122).
+
 	* international/mule-cmds.el (prefer-coding-system): Add an
 	example (bug#4869).
 

lisp/simple.el

@@ -5487,15 +5487,19 @@ The function should return non-nil if the two tokens do not match.")
   (when (and (not (bobp))
 	     blink-matching-paren)
     (let* ((oldpos (point))
+	   (limit-message "")
 	   (message-log-max nil) ; Don't log messages about paren matching.
 	   (blinkpos
             (save-excursion
               (save-restriction
-                (if blink-matching-paren-distance
-                    (narrow-to-region
-                     (max (minibuffer-prompt-end) ;(point-min) unless minibuf.
-                          (- (point) blink-matching-paren-distance))
-                     oldpos))
+                (when blink-matching-paren-distance
+		  (let ((start (- (point) blink-matching-paren-distance)))
+		    (when (> start (minibuffer-prompt-end))
+		      (setq limit-message " within the limit"))
+		    (narrow-to-region
+		     (max (minibuffer-prompt-end) ;(point-min) unless minibuf.
+			  start)
+		     oldpos)))
                 (let ((parse-sexp-ignore-comments
                        (and parse-sexp-ignore-comments
                             (not blink-matching-paren-dont-ignore-comments))))
@@ -5517,11 +5521,11 @@ The function should return non-nil if the two tokens do not match.")
        (mismatch
         (if blinkpos
             (if (minibufferp)
-                (minibuffer-message "Mismatched parentheses")
-              (message "Mismatched parentheses"))
+                (minibuffer-message "Mismatched parentheses%s" limit-message)
+              (message "Mismatched parentheses%s" limit-message))
           (if (minibufferp)
-              (minibuffer-message "Unmatched parenthesis")
-            (message "Unmatched parenthesis"))))
+              (minibuffer-message "Unmatched parenthesis%s" limit-message)
+            (message "Unmatched parenthesis%s" limit-message))))
        ((not blinkpos) nil)
        ((pos-visible-in-window-p blinkpos)
         ;; Matching open within window, temporarily move to blinkpos but only