> Paul Brook <p...@codesourcery.com> writes: > >> Also require IDs to start with a letter to provide for possible future > >> extensions. > > > > I'd go further than that, and require that user specified IDs match > > [A-Za-z][A-Za-z0-9_-]* > > I talked with Dan (cc'ed) to make sure we don't trample on existing > libvirt usage without need. What about > > [A-Za-z][A-Za-z0-9_-:.]* > > i.e. your regexp plus ':' and '.' in the second bracket?
I was deliberately avoiding those as they're often used as separators - we already use ':' in other contexts so there's potential ambiguity and parsing/quoting issues. I'm not aware of any current issues with '.'. Paul P.S. Your regexp doesn't do what you think it does, but I know what you mean.
