Tweak to use ustrings.

diff --git a/src/runtime/chrset.scm b/src/runtime/chrset.scm
index df85a6c8d155c6e01831c3040347bd10de205c45..1b481f10f82da4bdcec5eec5e305e5ccd0cd48b0 100644 (file)
--- a/src/runtime/chrset.scm
+++ b/src/runtime/chrset.scm
@@ -547,10 +547,10 @@ USA.
 ;;;; Backwards compatibility
 
 (define (string->char-set string)
-  (scalar-values->char-set (map char->integer (string->list string))))
+  (scalar-values->char-set (map char->integer (ustring->list string))))
 
 (define (char-set->string char-set)
-  (list->string (map integer->char (char-set-members char-set))))
+  (list->ustring (char-set-members char-set)))
 
 (define (char-set-members char-set)
   (guarantee-char-set char-set 'CHAR-SET-MEMBERS)