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-rw-r--r--shflags_test_helpers5
1 files changed, 4 insertions, 1 deletions
diff --git a/shflags_test_helpers b/shflags_test_helpers
index 36f651f..d808d0f 100644
--- a/shflags_test_helpers
+++ b/shflags_test_helpers
@@ -20,7 +20,10 @@
# Disagree with [ p ] && [ q ] vs [ p -a -q ] recommendation.
# shellcheck disable=SC2166
-# Treat unset variables as an error.
+# Exit immediately if a simple command exits with a non-zero status.
+set -e
+
+# Treat unset variables as an error when performing parameter expansion.
set -u
# Set shwordsplit for zsh.