(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:test_description) op: assign_op.Equal rhs: {(SQ <'performance of filter-branch'>)} 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>}) ] )