Function keySet

static/editor.md/lib/codemirror/mode/stylus/stylus.js:433–439

(array)

  };

  function keySet(array) {
    var keys = {};
    for (var i = 0; i < array.length; ++i) {
      keys[array[i]] = true;
    }
    return keys;
  };

  CodeMirror.registerHelper("hintWords", "stylus", hintWords);
  CodeMirror.defineMIME("text/x-styl", "stylus");