--- gforth/utf-8.fs	2005/12/31 15:46:10	1.18
+++ gforth/utf-8.fs	2006/02/20 08:22:28	1.22
@@ -128,6 +128,15 @@ $80 Value max-single-byte
 	nip nip over -
     then ;
 
+[IFUNDEF] wcwidth
+    : wcwidth abort ;
+[THEN]
+    
+: u8width ( xcaddr u -- n )
+    0 rot rot over + swap ?DO
+        I xc@+ swap >r wcwidth +
+    r> I - +LOOP ;
+
 : set-encoding-utf-8 ( -- )
     ['] u8emit is xemit
     ['] u8key is xkey
@@ -139,6 +148,9 @@ $80 Value max-single-byte
     ['] u8!+? is xc!+?
     ['] u8@+ is xc@+
     ['] u8len is xc-size
+[ [IFDEF] x-width ]
+    ['] u8width is x-width
+[ [THEN] ]
     ['] -u8trailing-garbage is -trailing-garbage
 ;