Thanks for the pointer. Guile does in fact have immutable strings and lists, but apparently they do not actually come from the Scheme standard: http://lists.gnu

Thanks for the pointer. Guile does in fact have immutable strings and lists, but apparently they do not actually come from the Scheme standard: http://lists.gnu.org/archive/html/guile-devel/2012-01/msg00135.html http://lists.gnu.org/archive/html/guile-devel/2012-01/msg001.... I will update my post to reflect this. I'll keep a close eye on the Lua ClojureScript backend as well; this should be interesting.