Function simpleSelection

samples/common/codehighlight/codemirror.js:4624–4626

(anchor, head)

  }

  function simpleSelection(anchor, head) {
    return new Selection([new Range(anchor, head || anchor)], 0)
  }

  // Compute the position of the end of a change (its 'to' property
  // refers to the pre-change end).