mathlib3

bb51df36 - chore(computability/regular_expressions): eliminate `finish` (#10811)

chore(computability/regular_expressions): eliminate `finish` (#10811) Removing uses of `finish`, as discussed in this Zulip thread (https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/mathlib.20sat.20solvers)