From 766d26825637276d0e1e0fb7061a75c0c445a375 Mon Sep 17 00:00:00 2001
From: Mikhail Titov <mikhail.a.titov@gmail.com>
Date: Mon, 13 May 2024 16:39:26 -0400
Subject: [PATCH] updated `expr` usage for env funcs extraction

---
 bin/radical-utils-env.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/bin/radical-utils-env.sh b/bin/radical-utils-env.sh
index 6da22fda..33e342aa 100755
--- a/bin/radical-utils-env.sh
+++ b/bin/radical-utils-env.sh
@@ -215,8 +215,9 @@ env_prep(){
 
             # handle bash function definitions
             v=$(grep -e "^$k=" $src | cut -f 2- -d= | sed -e 's/{ /{\n/')
-            func=$(expr "$k" : '^BASH_FUNC_\(.*\)\(()\|%%\)$')
-            if ! test -z "$func"
+            func=$(expr "$k" : '^BASH_FUNC_\(.*\)()$' \
+                     \| "$k" : '^BASH_FUNC_\(.*\)%%$')
+            if ! test -z "$func" && ! test "$func" = 0
             then
                 functions="$func $v\nexport -f $func\n\n$functions"
             else