From fefe313d515affcdd9bd7856a5442bc478b86848 Mon Sep 17 00:00:00 2001
From: Achim Gsell <achim.gsell@psi.ch>
Date: Wed, 21 Aug 2024 10:48:22 +0200
Subject: [PATCH] modulecmd: use of unset variable fixed

---
 Pmodules/modulecmd.bash.in | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/Pmodules/modulecmd.bash.in b/Pmodules/modulecmd.bash.in
index 9c61f99..47419b7 100644
--- a/Pmodules/modulecmd.bash.in
+++ b/Pmodules/modulecmd.bash.in
@@ -1993,13 +1993,15 @@ subcommand_unuse() {
 					 "${arg}"
 			fi
 
-                        local var="PMODULES_LOADED_${arg^^}"
-                        if [[ -n "${!var}" ]]; then
-                                std::die 3 "%s %s: %s -- %s" \
-                                         "${CMD}" "${SubCommand}" \
-                                         "cannot remove group due to loaded modules" \
-                                         "${arg}"
-                        fi
+			if [[ -v PMODULES_LOADED_${arg^^} ]]; then 
+				local var="PMODULES_LOADED_${arg^^}"
+				if [[ -n "${!var}" ]]; then
+					std::die 3 "%s %s: %s -- %s" \
+						 "${CMD}" "${SubCommand}" \
+						 "cannot remove group due to loaded modules" \
+						 "${arg}"
+				fi
+			fi
                         std::remove_path UsedGroups "${arg}"
                         local overlay
                         for overlay in "${UsedOverlays[@]}"; do