fix very stupid out of range error

include/cli-fancy.hpp

@@ -39,7 +39,7 @@ namespace sym {
 const std::string arrow = "";
 }
 class col {
-public:
+ public:
   col() { m_isres = true; }
   col(bool fg, unsigned char r, unsigned char g, unsigned char b) {
     m_isres = false;
@@ -82,7 +82,7 @@ public:
     return buf;
   }
 
-private:
+ private:
   bool m_isres = true;
   bool m_fg = false;
   unsigned char m_r = 0;
@@ -124,7 +124,7 @@ void PrintFancy(const std::vector<std::pair<std::string, col>> &e) {
   }
 }
 class command {
-public:
+ public:
   using ArgumentList = std::vector<std::pair<std::string, std::string>>;
   using Function = std::function<void(const ArgumentList &)>;
   class sub {
@@ -180,14 +180,14 @@ public:
   const std::string &GetDesc() const { return m_desc; }
   const std::vector<sub> &GetArgs() const { return m_sub; }
 
-private:
+ private:
   std::string m_name;
   std::string m_desc;
   std::vector<sub> m_sub;
   Function m_fun;
 };
 class arg_mgr {
-public:
+ public:
   arg_mgr() {}
   arg_mgr(char **args, int argc) { Parse(args, argc); }
   arg_mgr(int argc, char **args) { Parse(args, argc); }
@@ -204,8 +204,7 @@ public:
   }
 
   std::string GetArg(std::string w, std::string def = "") {
-    if (!FindShort(m_args, w))
-      return def;
+    if (!FindShort(m_args, w)) return def;
     for (size_t i = 0; i < m_args.size() - 1; i++) {
       if (m_args[i] == std::string("-" + w)) {
         return m_args[i + 1];
@@ -268,6 +267,7 @@ public:
 
   void Execute() {
     command::ArgumentList arglist;
+    if (m_args.size() > 1) {
       for (const auto &c : m_commands) {
         if (c.GetName() == m_args[1]) {
           for (const auto &j : c.GetArgs()) {
@@ -291,12 +291,13 @@ public:
           return;
         }
       }
+    }
     PrintHelp("");
   }
 
   void AddCommand(command cmd) { m_commands.push_back(cmd); }
 
-private:
+ private:
   std::string app_name;
   std::string app_version;
   std::vector<std::string> m_args;