From 5cc48c73d909c23df19744bd9c64b18fb8b205c4 Mon Sep 17 00:00:00 2001
From: Ian Kelling <iank@fsf.org>
Date: Mon, 16 Jul 2018 11:58:43 -0400
Subject: [PATCH] better compatibility with set -u

---
 err | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/err b/err
index f4aca22..f573fbb 100644
--- a/err
+++ b/err
@@ -69,7 +69,7 @@ err-catch() {
     echo "${BASH_SOURCE[1]}:${BASH_LINENO[0]}:in \`$BASH_COMMAND' returned $err"
     # err trap does not work within an error trap, the following line:
     err-bash-trace 2; set -e
-    "${_errcatch_cleanup[@]}"
+    "${_errcatch_cleanup[@]:-}" # note :- is to be compatible with set -u
     echo "$0: exiting with code $err"
     exit $err
   }
-- 
2.25.1