def tr.split_fin
import bend-osdev-cipher-modes@0.1.0.0/PROOF.bend as PROOFimport Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
919def tr.split_fin(acc: List<&2, M.CmBlock>, s: M.CmSplit) -> M.CmSplit:
920 match s:
921 case M.CmSplit{bs, t}:
922 M.CmSplit{M.cm.blocks.rev_onto(acc, bs), t}