127 is a control character.

diff --git a/src/lib/ctype.h b/src/lib/ctype.h
index adc96be2ead8c05213c3d256b38fdbfa3592c2a5..7a2c52dab14727d433f0d942ec53660306fd93bc 100644 (file)
--- a/src/lib/ctype.h
+++ b/src/lib/ctype.h
@@ -14,9 +14,9 @@ static inline int isspace (int c) {
           || c == '\r' || c == '\t' || c == '\v');
 }
 static inline int isblank (int c) { return c == ' ' || c == '\t'; }
-static inline int isgraph (int c) { return c >= 33 && c < 127; }
+static inline int isgraph (int c) { return c > 32 && c < 127; }
 static inline int isprint (int c) { return c >= 32 && c < 127; }
-static inline int iscntrl (int c) { return c >= 0 && c < 32; }
+static inline int iscntrl (int c) { return c >= 0 && c < 32 || c == 127; }
 static inline int isascii (int c) { return c >= 0 && c < 128; }
 static inline int ispunct (int c) {
   return isprint (c) && !isalnum (c) && !isspace (c);