* lib.c (sub, ref, replace): New functions.

* lib.h (sub, ref, replace): Declared.

* match.c (format_field): Generic indexing using new functions.

* txr.1: Documentation stub.

* txr.vim: Highlighting for new functions.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 3b5d4630..e75c5acc 100644
--- a/lib.h
+++ b/lib.h
@@ -557,6 +557,9 @@ val sort(val list, val lessfun, val keyfun);
 val find(val list, val key, val testfun, val keyfun);
 val set_diff(val list1, val list2, val testfun, val keyfun);
 val length(val seq);
+val sub(val seq, val from, val to);
+val ref(val seq, val ind);
+val replace(val seq, val from, val to, val items);
 val env(void);
 val obj_print(val obj, val stream);
 val obj_pprint(val obj, val stream);