Custom modificator for Karabiner

karabiner.json

{
   "description":"Ctrl + G as Escape except Emacs",
   "manipulators":[
      {
         "from":{
            "key_code":"g",
            "modifiers":{
               "mandatory":[
                  "control"
               ]
            }
         },
         "to":[
            {
               "key_code":"escape"
            }
         ],
         "type":"basic",
         "conditions":[
            {
               "type":"frontmost_application_unless",
               "bundle_identifiers":[
                  "^org\\.gnu\\.Emacs$"
               ]
            }
         ]
      }
   ]
},
{
   "description":"Cmd + Ctrl + hjkl to Arrow Keys",
   "manipulators":[
      {
         "from":{
            "key_code":"h",
            "modifiers":{
               "mandatory":[
                  "command",
                  "control"
               ]
            }
         },
         "to":[
            {
               "key_code":"left_arrow"
            }
         ],
         "type":"basic"
      },
      {
         "from":{
            "key_code":"j",
            "modifiers":{
               "mandatory":[
                  "command",
                  "control"
               ]
            }
         },
         "to":[
            {
               "key_code":"down_arrow"
            }
         ],
         "type":"basic"
      },
      {
         "from":{
            "key_code":"k",
            "modifiers":{
               "mandatory":[
                  "command",
                  "control"
               ]
            }
         },
         "to":[
            {
               "key_code":"up_arrow"
            }
         ],
         "type":"basic"
      },
      {
         "from":{
            "key_code":"l",
            "modifiers":{
               "mandatory":[
                  "command",
                  "control"
               ]
            }
         },
         "to":[
            {
               "key_code":"right_arrow"
            }
         ],
         "type":"basic"
      }
   ]
}