From ac422d577c1de1e94620787380932b9ccbd7b10a Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Fri, 10 Jun 2016 14:31:52 +0200
Subject: [PATCH] base/dracut-lib.sh: add trim()

trim() to remove leading and trailing whitespace
---
 modules.d/99base/dracut-lib.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index cb1ddd76..71dcedcf 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -39,6 +39,13 @@ str_ends() {
     [ "${1%*$2}" != "$1" ]
 }
 
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
 if [ -z "$DRACUT_SYSTEMD" ]; then
 
     warn() {