(CommandList children: [ (Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (LhsName name:test_description) op: Equal rhs: {(SQ <'performance of filter-branch'>)} spids: [4] ) ] spids: [4] ) (C {(.)} {(./perf-lib.sh)}) (C {(test_perf_default_repo)}) (C {(test_checkout_worktree)}) (C {(test_expect_success)} {(SQ <'mark bases for tests'>)} {(SQ <'\n'> <'\tgit tag -f tip &&\n'> <'\tgit tag -f base HEAD~100\n'>)} ) (C {(test_perf)} {(SQ <'noop filter'>)} {(SQ <'\n'> <'\tgit checkout --detach tip &&\n'> <'\tgit filter-branch -f base..HEAD\n'>)} ) (C {(test_done)}) ] )