Re: error messages with ranges

[Richard Stallman]

    However, I would like you clarify the '::Argument locations:' marker.
    Do you intend the double colons '::' as token to introduce
    some form of meta data for tools? (In this case, it is to introduce
    locus, but is it an escape for more general tags?)

Yes, exactly.

I don't insist on using ::.  It was the first thing that occurred to me.
If someone has a better idea, let's use it.