Sublime put spaces around curly brackets

Default (OSX).sublime-keymap

[
  { "keys": ["{"], "command": "insert_snippet", "args": {"contents": " { $0 }"}, "context":
    [
      { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
      { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
      { "key": "following_text", "operator": "regex_contains", "operand": "^(?:\t| |\\)|]|;|\\}|$)", "match_all": true },
      { "key": "selector", "operator": "equal", "operand": "source.ruby" }
    ]
  }
]