(do_cons_assoc): New function.
(do_cons_left): New function.
(do_vector_assoc): New function.
(do_vector_left): New function.
(make_iter_vector): Return SEXP_NIL for empty vectors.
(sexp_eq): New function.
(sexp_assq): New function.

* src/sexp.h (sexp_iterator): Added methods left and assoc.

Rev: src/sexp.c:1.19
Rev: src/sexp.h:1.22