New catch** macro.

* lisplib.c (except_set_entries): Autoload for catch** symbol.

* share/txr/stdlib/except.tl (catch**): New macro.

* txr.1: Document catch** macro, and the desc slot of
the catch-frame struct.

1 files changed, 1 insertions, 1 deletions

diff --git a/lisplib.c b/lisplib.c
index a6ef5a2f..6d9dcda7 100644
--- a/lisplib.c
+++ b/lisplib.c
@@ -270,7 +270,7 @@ static val hash_instantiate(val set_fun)
 static val except_set_entries(val dlt, val fun)
 {
   val name[] = {
-    lit("catch"), lit("catch*"), lit("handle"), lit("handle*"),
+    lit("catch"), lit("catch*"), lit("catch**"), lit("handle"), lit("handle*"),
     lit("ignwarn"), lit("macro-time-ignwarn"),
     nil
   };