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