Provide `char-code-limit', implement the GNU equivalent in terms of it. src/ChangeLog addition: 2015-03-15 Aidan Kehoe <kehoea@parhasard.net> * text.h: Make CHAR_CODE_LIMIT available as a #define. * text.h (valid_ichar_p): Use it. * text.c: Make a fixnum Vchar_code_limit available here. * text.c (non_ascii_valid_ichar_p): Use CHAR_CODE_LIMIT. * text.c (vars_of_text): Make `char-code-limit' available to Lisp. tests/ChangeLog addition: 2015-03-15 Aidan Kehoe <kehoea@parhasard.net> * automated/mule-tests.el (test-chars): Use char-code-limit explicitly here, instead of hardcoding the corresponding values. lisp/ChangeLog addition: 2015-03-16 Aidan Kehoe <kehoea@parhasard.net> * obsolete.el (max-char): Make this available for compatiblity with GNU, implement it in terms of char-code-limit.

--- a/tests/automated/mule-tests.el	Sun Mar 15 21:13:23 2015 +0000
+++ b/tests/automated/mule-tests.el	Mon Mar 16 00:09:46 2015 +0000
@@ -46,10 +46,9 @@
 
 If FOR-TEST-HARNESS is specified, a temporary buffer is used, and
 the Assert macro checks for correctness."
-  (let ((max (expt 2 (if (featurep 'mule) 21 8)))
-	(list nil)
+  (let ((list nil)
 	(i 0))
-    (while (< i max)
+    (while (< i char-code-limit)
       (and (not for-test-harness)
 	   (zerop (% i 1000))
 	   (message "%d" i))