Function move

src/codemirror.js:9069–9075

(by, dir)

  }

  function move(by, dir) {
    var f = function(cm) {
      cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
    };
    f.motion = true;
    return f;
  }

  function killTo(cm, by, dir) {
    var selections = cm.listSelections(), cursor;