New functions: list-seq, ved-seq and str-seq.

These functions convert any iterable to a list, vector or
string.

* eval.c (eval_init): Registered list-seq, vec-seq and str-seq
intrinsics.

* lib.c (list_seq, vec_seq, str_seq): New functions.

* lib.h (list_seq, vec_seq, str_seq): Declared.

* txr.1: Documented.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index dff5f178..3e97d45d 100644
--- a/lib.h
+++ b/lib.h
@@ -620,6 +620,9 @@ val tolist(val seq);
 val nullify(val obj);
 val empty(val seq);
 val seqp(val obj);
+val list_seq(val seq);
+val vec_seq(val seq);
+val str_seq(val seq);
 val nreverse(val in);
 val reverse(val in);
 val us_nreverse(val in);