[KevinH]

Yes that is from the code to see if it is safe to condense whitespace. It needs to examine all linked in css files, all style tags in head, and all style attributes to make sure that neither the white-space property nor the white-space-collapse property is being used.

Yes the bk.bookpath_to_id(bkpath) will return a garbage id if bkpath does not existand trying to read the contents of a non-existent id will throw an error.

I will add some code to prevent that.