(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ <'blaming trough history with topic branches'>)}
          spids: [4]
        )
      ]
    )
    (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>})
  ]
)