From 943e5eeb35dda39be3163885bc2e01b2b70e0c7c Mon Sep 17 00:00:00 2001
From: Mark Thom <markjordanthom@gmail.com>
Date: Sun, 1 Dec 2019 21:46:04 -0700
Subject: [PATCH] correct misprinting of attributed variables done by printer

---
 src/prolog/heap_print.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/prolog/heap_print.rs b/src/prolog/heap_print.rs
index 9011827a..8db9ff43 100644
--- a/src/prolog/heap_print.rs
+++ b/src/prolog/heap_print.rs
@@ -614,7 +614,7 @@ impl<'a, Outputter: HCValueOutputter> HCPrinter<'a, Outputter> {
         }
 
         match addr {
-            Addr::AttrVar(h) => Some(format!("_{}", h + 1)),
+            Addr::AttrVar(h) => Some(format!("_{}", h)),
             Addr::HeapCell(h) | Addr::Lis(h) | Addr::Str(h) => Some(format!("_{}", h)),
             Addr::StackCell(fr, sc) => Some(format!("_s_{}_{}", fr, sc)),
             _ => None,
-- 
2.54.0