Side note: For those of you who don't follow the libgc list, libgc is now patched to work with Valgrind. Checkout the CVS version, compile with -DUSE_GET_STACKBASE_FOR_MAIN and valgrind away.
I'm sorry I wasn't able to contribute anything yet (although I did in a roundabout way). At the moment I'm tinkering with the arithmetic parser I posted to guile-user, and trying to turn it into a parser generator. I expressed some interest in doing GSOC with Guile a little earlier and if y'all are willing to back me up, I really should write a proposal and submit it (I guess I'd just submit it to the GNU Project, assuming you approve?) I'm still plenty open to suggestions; I'm particularly interested in parsing and compilation, but mostly I just want to write some Scheme. What exactly needs to be finished in the Javascript compiler? Let me know what you think.