From 97dbff89218ef2186c01f15e83071fed6f5119e5 Mon Sep 17 00:00:00 2001
From: jjgarcia <jjgarcia>
Date: Tue, 8 Oct 2002 16:39:55 +0000
Subject: [PATCH] New function to undo "n" bindings of special variables.

---
 src/h/stacks.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/h/stacks.h b/src/h/stacks.h
index 50aa790d4..15851140b 100644
--- a/src/h/stacks.h
+++ b/src/h/stacks.h
@@ -72,6 +72,9 @@ extern bds_ptr bds_top;	/*  bind stack top  */
 #define	bds_unwind1  \
 	(SYM_VAL(bds_top->bds_sym) = bds_top->bds_val, --bds_top)
 
+#define bds_unwind_n(n) \
+	bds_unwind(bds_top - (n))
+
 /****************************
  * INVOCATION HISTORY STACK
  ****************************/