1 files changed, 10 insertions, 3 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index a566b83..4188308 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -6,8 +6,9 @@ enum TYPE {
   TYPE_INT      = 1,
   TYPE_UINT     = 2,
   TYPE_HEX      = 3,
-  TYPE_STRING   = 4,
-  TYPE_PERCENT  = 5
+  TYPE_CHAR     = 4,
+  TYPE_STRING   = 5,
+  TYPE_PERCENT  = 6
 };
 
 enum FLAGS {
@@ -91,7 +92,7 @@ int vsprintf(char *str, char *fmt, va_list ap) {
     fwidth = 0;
 
     fmt++;
-    while(1) {
+    for(;;) {
       switch(*fmt) {
         case '#':
           flags |= FL_ALT;
@@ -99,6 +100,9 @@ int vsprintf(char *str, char *fmt, va_list ap) {
         case '%':
           type = TYPE_PERCENT;
           goto done;
+        case 'c':
+          type = TYPE_CHAR;
+          goto done;
         case 's':
           type = TYPE_STRING;
           goto done;
@@ -137,6 +141,9 @@ done:
         while(*s)
           *str++ = *s++;
         break;
+      case TYPE_CHAR:
+        *str++ = va_arg(ap, char);
+        break;
       case TYPE_HEX:
         x = va_arg(ap, int);
         hex(&str, flags, fwidth, 4, x);