From b873a72ac918deee69159003f6e2575ffbfff362 Mon Sep 17 00:00:00 2001
From: Andrew Po <absourd.noise@gmail.com>
Date: Wed, 4 May 2016 18:01:25 +0300
Subject: [PATCH] Fixed panic in AddConfigPath

---
 util.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/util.go b/util.go
index b0903fb..2e6e56d 100644
--- a/util.go
+++ b/util.go
@@ -62,7 +62,11 @@ func absPathify(inPath string) string {
 
 	if strings.HasPrefix(inPath, "$") {
 		end := strings.Index(inPath, string(os.PathSeparator))
-		inPath = os.Getenv(inPath[1:end]) + inPath[end:]
+		if end == -1 {
+			inPath = os.Getenv(inPath[1:])
+		} else {
+			inPath = os.Getenv(inPath[1:end]) + inPath[end:]
+		}
 	}
 
 	if filepath.IsAbs(inPath) {