From f62747c29ca2b49ba1dafc8351e0096b19f717d9 Mon Sep 17 00:00:00 2001
From: Stephan DONIN <stephan@coursebase.co>
Date: Fri, 20 May 2016 10:49:02 +0900
Subject: [PATCH] [Fix] `set -u`:  is variable set test

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

diff --git a/nvm.sh b/nvm.sh
index 7e9d1d0..78374e0 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -2166,7 +2166,7 @@ nvm() {
           return 11
         fi
       fi
-      if [ -n "$NVM_USE_OUTPUT" ]; then
+      if [ -n "${NVM_USE_OUTPUT-}" ]; then
         nvm_echo "$NVM_USE_OUTPUT"
       fi
     ;;