Genera: use si:*common-lisp-syntax-is-ansi-common-lisp*
Many systems use Syntax: COMMON-LISP, that unpatched Genera treats as a CLtL2 dialect rather than as a CLHS dialect, which would be Syntax: ANSI-COMMON-LISP. A recent patch to Genera by Gary Palter forces the previous to be treated like the latter. This allows for better compatibility, and doesn't break older unpatched Genera.
This is getting quite stale. I pushed a nudge onto the launchpad. If I don't hear something soon, I'm just going to close this and forget about it.