Cast iscntrl()'s arg to unsigned char.

ok nicm@

diff --git a/bin/ksh/emacs.c b/bin/ksh/emacs.c
index eaf5bbd..8597b80 100644 (file)
--- a/bin/ksh/emacs.c
+++ b/bin/ksh/emacs.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: emacs.c,v 1.56 2015/10/10 15:31:00 millert Exp $      */
+/*     $OpenBSD: emacs.c,v 1.57 2015/10/16 17:14:04 mmcc Exp $ */
 
 /*
  *  Emacs-like command line editing and history
@@ -1257,7 +1257,7 @@ kb_decode(const char *s)
 
        l[0] = '\0';
        for (i = 0; i < strlen(s); i++) {
-               if (iscntrl(s[i])) {
+               if (iscntrl((unsigned char)s[i])) {
                        l[at++] = '^';
                        l[at++] = UNCTRL(s[i]);
                } else