From 81c8ce1a54efec8724c9921cec3953bbe8a93e9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Lebleu?= <jerome@maroufle.fr>
Date: Sun, 29 May 2016 23:34:08 +0200
Subject: [PATCH] [fix] Set default value for YNH_APP_BACKUP_DIR in ynh_backup
 helper

---
 data/helpers.d/filesystem | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data/helpers.d/filesystem b/data/helpers.d/filesystem
index a02434572..248a795a9 100644
--- a/data/helpers.d/filesystem
+++ b/data/helpers.d/filesystem
@@ -22,7 +22,7 @@ ynh_backup() {
     }
 
     # prepend the backup directory
-    [[ -n "${YNH_APP_BACKUP_DIR}" && "${DESTPATH:0:1}" != "/" ]] \
+    [[ -n "${YNH_APP_BACKUP_DIR:-}" && "${DESTPATH:0:1}" != "/" ]] \
         && DESTPATH="${YNH_APP_BACKUP_DIR}/${DESTPATH}"
     [[ ! -e "${DESTPATH}" ]] || {
         echo "Destination path '${DESTPATH}' already exist" >&2