diff -r a285ee393860 -r ed440bcd9740 src/input.c
--- a/src/input.c	Mon Apr 07 17:39:46 2014 +0200
+++ b/src/input.c	Tue Apr 08 21:13:28 2014 +0200
@@ -28,6 +28,7 @@
  */
 
 #include "input.h"
+#include <ctype.h>
 
 void init_colorpairs() {
     init_pair(COL_YB, COLOR_YELLOW, COLOR_BLUE);
@@ -70,6 +71,7 @@
     static size_t pos = 0;
     
     if (*str == '\0') {
+        memset(str, 0, len);
         pos = 0;
     }
     
@@ -88,7 +90,7 @@
             str[--pos] = '\0';
             break;
         default:
-            if (c < 255 && pos < len-1) {
+            if (isprint(c) && pos < len-1) {
                 str[pos++] = (char) c;
             }
         }