lib: get rid of internal rewindable iter nonsense.

Iterator rewinding is only used by the three functions isec,
isecp and diff, which can easily just re-initialize the
iterator.

* lib.c (seq_iter_rewind): Static function removed.
(seq_iter_init_with_info): Remove support_rewind argument, and
adjust all code referencing it on the assumption that it's zero.
(seq_iter_init_with_rewind): Static function removed.
(seq_iter_init, iter_begin, iter_reset, nullify, find, rfind):
Drop last argument from seq_iter_init_with_info.
(diff, isec, iescp): Use seq_iter_init rather than
seq_iter_init_with_rewind. Instead of seq_iter_rewind, just
reinitialize the iterator.

* lib.h (seq_iter_init_with_info): Declaration updated.

* eval.c (tprint): Drop last argument from seq_iter_init_with_info.

1 files changed, 1 insertions, 2 deletions

diff --git a/lib.h b/lib.h
index 6010ebd2..a6684ca6 100644
--- a/lib.h
+++ b/lib.h
@@ -762,8 +762,7 @@ val subtypep(val sub, val sup);
 val typep(val obj, val type);
 seq_info_t seq_info(val cobj);
 void seq_iter_mark_op(struct seq_iter *it);
-void seq_iter_init_with_info(val self, seq_iter_t *it,
-                             seq_info_t si, int support_rewind);
+void seq_iter_init_with_info(val self, seq_iter_t *it, seq_info_t si);
 void seq_iter_init(val self, seq_iter_t *it, val obj);
 INLINE int seq_get(seq_iter_t *it, val *pval) { return it->ops->get(it, pval); }
 INLINE int seq_peek(seq_iter_t *it, val *pval) { return it->ops->peek(it, pval); }