--- a/lisp/ChangeLog	Wed Nov 14 18:51:31 2007 +0000
+++ b/lisp/ChangeLog	Wed Nov 14 19:25:40 2007 +0000
@@ -1,3 +1,12 @@
+2007-11-14  Aidan Kehoe  <kehoea@parhasard.net>
+
+	* subr.el (string-to-sequence):
+	* subr.el (string-to-list):
+	* subr.el (string-to-vector):
+	(append STRING nil) is faster than (mapcar #'identity STRING),
+	(vconcat STRING) is faster than (mapcar #'identity STRING). Change
+	from GNU. 
+
 2007-11-14  Aidan Kehoe  <kehoea@parhasard.net>
 
 	* code-files.el (write-region):

--- a/lisp/subr.el	Wed Nov 14 18:51:31 2007 +0000
+++ b/lisp/subr.el	Wed Nov 14 19:25:40 2007 +0000
@@ -947,17 +947,17 @@
 TYPE should be `list' or `vector'."
   (ecase type
     (list
-     (mapcar #'identity string))
+     (append string nil))
     (vector
-     (mapvector #'identity string))))
+     (vconcat string))))
 
 (defun string-to-list (string)
   "Return a list of characters in STRING."
-  (mapcar #'identity string))
+  (append string nil))
 
 (defun string-to-vector (string)
   "Return a vector of characters in STRING."
-  (mapvector #'identity string))
+  (vconcat string))
 
 (defun store-substring (string idx obj)
   "Embed OBJ (string or character) at index IDX of STRING."