don't say anything when there is no combo

src/main.c

@@ -47,7 +47,7 @@ int main(int argc, char *argv[]) {
 
   init_tables(elements, inv, polls, 1);
 
-  printf("%s, welcome to Elemental on Command Line!\n", name);
+  printf("%s, welcome to Elemental on Command Line!\nType /help for commands.\n", name);
   int newline = 1;
   while (1) {
     // todo: separate into functions
@@ -85,6 +85,9 @@ int main(int argc, char *argv[]) {
 
     int combos = get_command(command, command_re, sort_tmp);
 
+    if (combos < 2)
+      continue;
+
     int failed = 0;
     for (int i = 0; i < combos; i++) {
       uintptr_t result;