> using the reg exps rules gives me hundreds of Only one new line is allowed at the end of a file

Ah, right, in OGM we check for only one empty line at the end of a file as well. Hardy does occassionally do several lines in HV, though. So we should omit this check here for the sake of simplicity.

>  a dozen White spaces at the end of line errors

These are probably legitime errors which should be addressed. Do you have an example?

That being said, I don't think it's fair that you need to bother with all that formatting issues which have been existent before you ever touched the code base. So if you'd want to help out with addressing, that would be great and much appreciated, but if you don't feel like doing so, I can handle it as well.