Convert 4 spaces to 2 spaces, Sublime Text macro

ConvertFourSpacesToTwo.sublime-macro

//
// Converts code indentation from 4 spaces to 2 spaces
//
// For a hotkey, add to Preferences > Key Bindings - User:
//
// { "keys": ["ctrl+alt+i"], "command": "run_macro_file", "args": {"file": "res://Packages/User/ConvertTwoSpacesToFour.sublime-macro"} }
//
[
  {
    "args": { "setting": "tab_size", "value": 4 },
    "command": "set_setting"
  },
  {
    "args": { "set_translate_tabs": true },
    "command": "unexpand_tabs"
  },
  {
    "args": { "setting": "tab_size", "value": 2 },
    "command": "set_setting"
  },
  {
    "args": { "set_translate_tabs": true },
    "command": "expand_tabs"
  }
]