(copyright-update-year): Delete code that replaces 20xy with xy.

lisp/emacs-lisp/copyright.el

@@ -100,7 +100,7 @@ When this is `function', only ask when called non-interactively."
       (forward-line 1)
       (re-search-forward comment-start-skip)
       (re-search-forward copyright-years-regexp))
-		  
+
     ;; Note that `current-time-string' isn't locale-sensitive.
     (setq copyright-current-year (substring (current-time-string) -4))
     (unless (string= (buffer-substring (- (match-end 2) 2) (match-end 2))
@@ -124,26 +124,6 @@ When this is `function', only ask when called non-interactively."
 			   (eq (char-after (+ (point) size -2)) ?-)))
 		  ;; This is a range so just replace the end part.
 		  (delete-char size)
-		;; Detect if this is using the following shorthand:
-		;; (C) 1993, 94, 95, 1998, 2000, 01, 02, 2003
-		(if (and
-		     ;; Check that the last year was 4-chars and same century.
-		     (eq size -4)
-		     (equal (buffer-substring (- (point) 4) (- (point) 2))
-			    (substring copyright-current-year 0 2))
-		     ;; Check that there are 2-char years as well.
-		     (save-excursion
-		       (re-search-backward "[^0-9][0-9][0-9][^0-9]"
-					   (line-beginning-position) t))
-		     ;; Make sure we don't remove the first century marker.
-		     (save-excursion
-		       (forward-char size)
-		       (re-search-backward
-			(concat (buffer-substring (point) (+ (point) 2))
-				"[0-9][0-9]")
-			(line-beginning-position) t)))
-		    ;; Remove the century marker of the last entry.
-		    (delete-region (- (point) 4) (- (point) 2)))
 		;; Insert a comma with the preferred number of spaces.
 		(insert
 		 (save-excursion