Allow hash of current directory

src/autocomplete.cpp

@@ -22,6 +22,15 @@ void dropshell::autocomplete(const std::vector<std::string> &args)
 
     // std::cout<<" cmd = ["<<cmd<<"]"<<std::endl;
 
+    if (cmd=="hash")
+    {   // output files and folders in the current directory, one per line.
+        std::filesystem::directory_iterator dir_iter(std::filesystem::current_path());
+        for (const auto& entry : dir_iter) 
+            std::cout << entry.path().filename().string() << std::endl;        
+        return;
+    }
+
+
     std::string noargcmds[] = {"templates","autocomplete_list_servers","autocomplete_list_services","autocomplete_list_commands"};
     if (std::find(std::begin(noargcmds), std::end(noargcmds), cmd) != std::end(noargcmds))
         return;