1one-at-a-time: shell_variable is 'second' 2echo "prefixes: ignore errors"; exit 13 3prefixes: ignore errors 4*** Error code 13 (ignored) 5prefixes: no echo 6prefixes: always, no echo 7shell-e-option: before 8shell-e-option: after 9echo 'do-prefix-plus: a regular command' 10echo 'do-prefix-plus: prefixed by plus' 11do-prefix-plus: prefixed by plus 12echo 'do-prefix-plus: a regular command' 13{ echo 'do-prefix-plus: a regular command' 14} || exit $? 15echo 'do-prefix-plus: prefixed by plus' 16do-prefix-plus: prefixed by plus 17{ echo 'do-prefix-plus: a regular command' 18} || exit $? 19do-error-not-ignored: successful 20*** Error code 13 (continuing) 21 22Stop. 23make: stopped making "do-error-not-ignored" in unit-tests 24exit status 0 25