* lib.c (sel): Accept a function in place of the index list.

* txr.1: Documented.

1 files changed, 14 insertions, 1 deletions

diff --git a/txr.1 b/txr.1
index 74e542f4..7b4d85fe 100644
--- a/txr.1
+++ b/txr.1
@@ -13312,7 +13312,7 @@ that element is added to a list. Finally, the list is returned.
 
 .coNP Function @ select
 .synb
-.mets (select < object << index-list )
+.mets (select < object >> { index-list <> | function })
 .syne
 .desc
 
@@ -13327,6 +13327,19 @@ the indices in
 .metn index-list .
 
 If
+.meta function
+is given instead of
+.metn index-list ,
+then
+.meta function
+is invoked with
+.meta object
+as its argument. The return value is then taken as
+if it were the
+.meta index-list
+argument .
+
+If
 .meta object
 is a sequence, then
 .meta index-list