(command.CommandList
  children: [
    (command.Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (lhs_expr.LhsName name:test_description spids:[12])
          op: Equal
          rhs: {(SQ <'blaming trough history with topic branches'>)}
          spids: [12]
        )
      ]
      spids: [12]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(setup)} 
      {
        (SQ <'\n'> <'\ttest_commit A0 file.t line0 &&\n'> <'\ttest_commit A1 &&\n'> 
          <'\tgit reset --hard A0 &&\n'> <'\ttest_commit B1 &&\n'> <'\ttest_commit B2 file.t line0changed &&\n'> <'\tgit reset --hard A1 &&\n'> 
          <'\ttest_merge A2 B2 &&\n'> <'\tgit reset --hard A1 &&\n'> <'\ttest_commit C1 &&\n'> <'\tgit reset --hard A2 &&\n'> 
          <'\ttest_merge A3 C1\n'> <'\t'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'blame --reverse --first-parent finds A1'>)} 
      {
        (SQ <'\n'> 
          <'\tgit blame --porcelain --reverse --first-parent A0..A3 -- file.t >actual_full &&\n'> <'\thead -n 1 <actual_full | sed -e "s/ .*//" >actual &&\n'> <'\tgit rev-parse A1 >expect &&\n'> 
          <'\ttest_cmp expect actual\n'> <'\t'>
        )
      }
    )
    (C {(test_done)})
  ]
)