add asserts.

src/autocomplete.cpp

@@ -4,6 +4,7 @@
 #include "templates.hpp"
 #include "services.hpp"
 #include "servers.hpp"
+#include "utils/assert.hpp"
 
 #include <algorithm>
 #include <iostream>
@@ -22,6 +23,7 @@ void dropshell::autocomplete(const std::vector<std::string> &args)
         return;
     }
 
+    ASSERT(args.size() >= 3);
     std::string cmd = args[2];
 
     // std::cout<<" cmd = ["<<cmd<<"]"<<std::endl;