X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=tests%2Futils%2Fenv.sh.in;h=77e0c443ec9f00b8e96f3d27e48eba5091efc226;hp=12069fef8cfafdbecf01304d7b80e885c68803d6;hb=HEAD;hpb=2a656b4ae7df23627559ac7e891ff3d419c71ef6

diff --git a/tests/utils/env.sh.in b/tests/utils/env.sh.in
index 12069fef..77e0c443 100644
--- a/tests/utils/env.sh.in
+++ b/tests/utils/env.sh.in
@@ -1,14 +1,15 @@
-#!/bin/bash
-#
 # SPDX-FileCopyrightText: 2021-2022 EfficiOS, Inc.
 # SPDX-License-Identifier: GPL-2.0-only
 
-# Sets the variable named `$1` to `$2` if it's not set, and exports it.
+# shellcheck shell=bash
+
+# Sets the variable named `$1` to `$2` if it's not set (or empty), and
+# exports it.
 _set_var_def() {
 	local -r varname=$1
 	local -r val=$2
 
-	if [[ -z ${!varname:-} ]]; then
+	if [[ -z $(eval echo "\${$varname:-}") ]]; then
 		eval "$varname='$val'"
 	fi