(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(DQ ("git-grep performance in various modes"))}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./perf-lib.sh)})
    (C {(test_perf_large_repo)})
    (C {(test_checkout_worktree)})
    (C {(test_perf)} {(SQ <"grep worktree, cheap regex">)} 
      {(SQ <"\n"> <"\tgit grep some_nonexistent_string || :\n">)}
    )
    (C {(test_perf)} {(SQ <"grep worktree, expensive regex">)} 
      {(SQ <"\n"> <"\tgit grep \"^.* *some_nonexistent_string$\" || :\n">)}
    )
    (C {(test_perf)} {(SQ <"grep --cached, cheap regex">)} 
      {(SQ <"\n"> <"\tgit grep --cached some_nonexistent_string || :\n">)}
    )
    (C {(test_perf)} {(SQ <"grep --cached, expensive regex">)} 
      {(SQ <"\n"> <"\tgit grep --cached \"^.* *some_nonexistent_string$\" || :\n">)}
    )
    (C {(test_done)})
  ]
)