Name extension discussion.
I wholeheartedly agree with Graham Nicholls' objection to Windowsisms, but
Richard Mitchell's explanation makes a lot of sense, especially
> I wouldn't expect or want to have the extensions on anything in my PATH.
An alternative approach might be language-specific
I'm fully aware the OS doesn't care about the extension. The extension is
there solely for my benefit when writing code. At a glance I can tell which
language I used to write something. I could use file or look at the first line
myself, but a simple "ls" is all that is needed to view
