*, =, etc. being removed

[danluu]

See:

https://en.wikipedia.org/?curid=28831157 https://en.wikipedia.org/?curid=1468119 https://en.wikipedia.org/?curid=31533859

In combination with the --lists issue, this is resulting in empty documents instead of 1 posting documents. With the --lists issue fixed, these should turn into "real" documents.