Differency normal characters and half characters on keydown
问题 We forked experimental Mediawiki VisualEditor. This WYSIWYM editor work with a hidden textarea and a representation of the content in DOM. When you focus the view, the focus is given to the textarea, and the view listen to keydown event to add each typed characters to the content, then empty the textarea's value. The problem occurs with half characters on Mac OS X only. If you type ^or ¨ or any characters which need a second character to be printed, keydown event is fired. So, when user want