Comment 1 for bug 456473

Same result in Ikarus:

$ ikarus --r6rs-script tests/r6rs/run.sps
Unhandled exception:
 Condition components:
   1. &who: list
   2. &message: "raw symbol encountered in output of macro"
   3. &syntax:
       form: (list 'quasiquote (list 'foo (cons 'unquote q)))
       subform: quasiquote