> I wouldn’t want to see names of authors/contributors mangled
> in the source.

This is a reason to write names in ASCII.   While Latin-1 is a grey area because most of it's characters look familiar to English-speaking developers, I don't think you will easily recognize my name if I write it in Cyrillic and even if you do, chances are you would not be able to search for it.  On the other hand, everyone who uses e-mail is likely to have a preferred ASCII spelling of his/her name.