type Cl
import bend-kit-regex@0.8.0.0/regex.bend as Regeximport Base
1014# The epsilon closure as a depth-first walk: stack is the work left, seen the pcs
1015# visited at this position, out the threads that wait on a char or match (reversed).
1016type Cl is Data:
1017 Cl{stack: List<&2, Th>, seen: Trie<Unit>, out: List<&2, Th>}