Finding What text was deleted in a Document

How do I find out what text has been deleted in a document?
the public void removeUpdate(DocumentEvent e) method is called when the document has already been updated, so the offset and length in the document event seem to be useless. The UndoableEditEvent seemed promising, but apparently the modifications stored in the UndoableEdit are not accessible...
This shoudln't be that hard! Off course, I could keep a copy of the document text updated, but that seems awfully inefficient!

I found a solution, but I'm not entirely satisfied, so the question is still opened. The solution is to extend one of the default document classes, overriding the remove() method to notify a new type of event, and then invoke super.remove(). This works, but it's not perfect, because if the super.remove() doesn't succede (i.e. throws an exception) what was notified is wrong.
I'm still very surprised that there is no obvious way of capturing the removed text... please let me know if you can see any.

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Finding What text was deleted in a Document

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