From ca33873ad616bdb4d38cd9e15aa184d1ab2aba05 Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Wed, 28 Feb 2024 08:32:34 +0100
Subject: Fix empty default values

---
 lib/util/config.bash | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'lib/util/config.bash')

diff --git a/lib/util/config.bash b/lib/util/config.bash
index 76b6567..9817cf3 100644
--- a/lib/util/config.bash
+++ b/lib/util/config.bash
@@ -17,7 +17,11 @@ config_subkeys() {
 config_for() {
 	local host=$1 ; shift
 	local key=$1 ; shift
-	local default=$1 ; shift
+
+	# Use a variable definition test to define default, in order to ensure
+	# it is _not_ defined if no argument for it was passed, but _is_
+	# defined even if an empty string was passed.
+	test -v 1 && { local default=$1 ; shift ; }
 
 	local default
 	local file
@@ -67,8 +71,8 @@ config_for() {
 		fi
 	done
 
-	# Return default value
-	if [[ -n $default ]]
+	# Return default value, if one has been defined
+	if test -v default
 	then
 		printf "%s" "$default"
 		return
-- 
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