apenwarr-redo/t/355-deps-cyclic/all.do

. ../skip-if-minimal-do.sh
! redo a >/dev/null 2>&1 || exit 204
Add cyclic dependence detection. If a depends on b which depends on a, redo would just freeze. Now it aborts with a somewhat helpful error message. [Updated by apenwarr for coding style and to add a test.] 2016-11-27 23:35:28 -08:00			`. ../skip-if-minimal-do.sh`
			`! redo a >/dev/null 2>&1 \|\| exit 204`