There are a couple of minor departures from the coding standards that would also be worth fixing:

* The extra space around the `data` parameter here. Similarly, the extraneous whitespace around the function definition in line 34
* Extra white space in around the parameters of $tw.utils.registerFileType()

See http://tiddlywiki.com/static/TiddlyWiki%2520Coding%2520Style%2520Guidelines.html for more; I fear that the list isn't exhaustive.