From a4d21f05928b3534cf9df11b0ccc3f86d79d88bc Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date: Sat, 11 Jan 2020 15:09:54 -0500
Subject: vim-patch.sh: fix for bash 4.3 or older #11700

---
 scripts/vim-patch.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/vim-patch.sh b/scripts/vim-patch.sh
index 769f0fed58..d76c8573c9 100755
--- a/scripts/vim-patch.sh
+++ b/scripts/vim-patch.sh
@@ -574,10 +574,12 @@ list_missing_previous_vimpatches_for_patch() {
     fi
   done
 
+  set +u  # Avoid "unbound variable" with bash < 4.4 below.
   if [[ -z "${missing_list[*]}" ]]; then
     msg_ok 'no missing previous Vim patches'
     return 0
   fi
+  set -u
 
   local -a missing_unique
   while IFS= read -r line; do
-- 
cgit