From 46da745ed89e7ab589e7f28f0b9cb5bca0e4d907 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christopher=20M=C3=A9trailler?=
 <christopher.metrailler@nordicsemi.no>
Date: Fri, 17 May 2019 11:24:11 +0200
Subject: [PATCH] env: ignore unset var
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This will substitute the ZSH_VERSION in case it was unset or null. No
more error message will be printed when unset variables are treat as an
error.

Signed-off-by: Christopher Métrailler <christopher.metrailler@nordicsemi.no>
---
 zephyr-env.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zephyr-env.sh b/zephyr-env.sh
index f5b90d2f80..f6c7f23c5a 100644
--- a/zephyr-env.sh
+++ b/zephyr-env.sh
@@ -12,7 +12,7 @@
 #
 # Note: The version of zsh need to be 5.0.6 or above. Any versions below
 # 5.0.6 maybe encoutner errors when sourcing this script.
-if [ -n "$ZSH_VERSION" ]; then
+if [ -n "${ZSH_VERSION:-}" ]; then
 	DIR="${(%):-%N}"
 	if [ $options[posixargzero] != "on" ]; then
 		setopt posixargzero