Assume an ASCII compatible wide character encoding.

[gnulib.git] / lib / mbswidth.c

diff --git a/lib/mbswidth.c b/lib/mbswidth.c
index 48da663..0726951 100644 (file)
--- a/lib/mbswidth.c
+++ b/lib/mbswidth.c
@@ -51,7 +51,7 @@
 # include <wctype.h>
 #endif
 #if !defined iswcntrl && !HAVE_ISWCNTRL
-# define iswcntrl(wc) 0
+# define iswcntrl(wc) (((wc) & ~0x1f) == 0 || (wc) == 0x7f)
 #endif
 
 #ifndef mbsinit