Another note: I realize that I shouldn't use `expand-top-sequence' to
restart the expander within a local lexical environment. At first
glance, I guess I should be using `expand' instead.
Another possibility: if the (capture-lexical-environment) was found
within a body or sequence where local definitions are permitted, restart
using the appropriate expansion function that allows local definitions.
However, I haven't yet determined whether this is feasible given the way
psyntax handles bodies. For that matter, I haven't decided whether this
would be desirable.
Anyway, now I must sleep.
Best,
Mark
