fix sscanf to accept a-z values

Author: mcpcpc

kirc.c

@@ -234,18 +234,18 @@ handle_user_input(void) {
     char usrin[MSG_MAX], v1[MSG_MAX - CHA_MAX], v2[CHA_MAX], c1;
     if (fgets(usrin, MSG_MAX, stdin) != NULL &&
         (sscanf(usrin, "/%[m] %s %[^\n]\n", &c1, v2, v1) > 2 ||
-         sscanf(usrin, "/%[xuMQhqnjp] %[^\n]\n", &c1, v1) > 0)) {
+         sscanf(usrin, "/%[a-zA-Z] %[^\n]\n", &c1, v1) > 0)) {
         switch (c1) {
         case 'x': raw("%s\r\n", v1);                   break;
         case 'q': raw("quit\r\n");                     break;
-        case 'h': puts(HELP);                          break;
         case 'u': strcpy(chan, v1);                    break;
         case 'Q': raw("quit %s\r\n", v1);              break;
         case 'j': raw("join %s\r\n", v1);              break;
         case 'p': raw("part %s\r\n", v1);              break;
         case 'n': raw("names #%s\r\n", chan);          break;
         case 'M': raw("privmsg nickserv :%s\r\n", v1); break;
         case 'm': raw("privmsg %s :%s\r\n", v2, v1);   break;
+        default : puts(HELP);                          break;
         }
     } else {
         size_t msg_len = strlen(usrin);