Function onKeyUp

static/editor.md/lib/codemirror/lib/codemirror.js:4035–4038

(e)

  }

  function onKeyUp(e) {
    if (e.keyCode == 16) this.doc.sel.shift = false;
    signalDOMEvent(this, e);
  }

  function onKeyPress(e) {
    var cm = this;