From 7ba3397cd975a0269a7650cb78ef98a17cf231c8 Mon Sep 17 00:00:00 2001
From: jazzpi <jasper@mezzo.de>
Date: Mon, 30 Mar 2015 12:45:46 +0200
Subject: [PATCH] Fix #30

---
 lib/command.coffee | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/command.coffee b/lib/command.coffee
index 0b5849b..1839086 100644
--- a/lib/command.coffee
+++ b/lib/command.coffee
@@ -102,6 +102,8 @@ class Command
       if off1?
         address1 += @parseOffset(off1)
 
+      address1 = 0 if address1 is -1
+
       if address1 < 0 or address1 > lastLine
         throw new CommandError('Invalid range')