Ian Campbell wrote:

Surprisingly string concatenation doesn't appear to be required for the
majority of punctuation, at least so far as I can tell with this test
patch (this is a xen-unstable kernel I had lying around so don't pay too
much attention to head-xen.S bit). The only problem I found is comma,
which can't be escaped.

I've no idea how reliably this works across tool chain versions etc
though. It worked for me ;-)
  

I guess that's a broad enough selection of names.  I had assumed it 
would impose normal symbol-like restrictions on the unquoted section 
name.  (I guess ';' would also need quoting.)

    J