From 88998c35f28161f1ed054efa5b0ff3779a1d7477 Mon Sep 17 00:00:00 2001
From: Xandor Schiefer <me@xandor.co.za>
Date: Tue, 15 Nov 2016 21:47:23 +0200
Subject: [PATCH] Better pre-managed PATH check in nvm_change_path

---
 nvm.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nvm.sh b/nvm.sh
index 3c4eb69..2dd6bfe 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -490,7 +490,8 @@ nvm_change_path() {
     nvm_echo "${3-}${2-}"
   # if the initial path doesn’t contain an nvm path, prepend the supplementary
   # path
-  elif [ "${1#*$NVM_DIR}" == "$1" ]; then
+  elif [ `expr "${1-}" : ".*${NVM_DIR}/[^:]*${2-}.*"` = 0 ] || \
+       [ `expr "${1-}" : ".*${NVM_DIR}/versions/[^/]*/[^/]*${2-}.*"` = 0 ]; then
     nvm_echo "${3-}${2-}:${1-}"
   # use sed to replace the existing nvm path with the supplementary path. This
   # preserves the order of the path.