my suggestion would be to support a period '.' in the field. so I could specify 'Makefile.' to mean this is an extensionless file named Makefile. You could also support a period in front, but that would be superfluous to what is already there.

This could also lead to finer grained formatting for ...

Is it possible to configure Zeus to have a Document Type based on the name of a file and not the extension. I have a couple types of file that are extensionless. Most notably is 'Makefile' I can't seem to figure out how to have it defined with anything other than default.