Shall, I tell him to take the notices, from the original file and add it along with his copyright to the files he edited, and leave out the other files?
That sounds like the clearest outcome. Additionally, he claims to need the lua config file customized for his specific environment. I would think he should not distribute those. Is it problematic somehow, if he wants to? >From sv-problem-copyright-holder Is the copyright holder referred to in the copyright notices, a legal entity that can be assigned copyright? If not, you need to add the author(s)' name(s) instead. What exactly is meant by "add the author(s)' name(s) instead". Copyright 2009 Karl Berry as opposed to something like Copyright 2009 Eplain Project Team where "Eplain Project Team" has no legal existence. Lots of projects would like to do this, but it's legally meaningless to say it, so far as I know. I've found some files, which will say something like "By Who Ever". If you mean literally "By Who Ever", clearly that's meaningless. Thanks for all your work.