(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ (Token id:Id.Lit_Chars val:'test @{-N} syntax' span_id:6))}
          spids: [4]
        )
      ]
    )
    (C {(.)} {(./test-lib.sh)})
    (command.ShFunction
      name: make_commit
      body: 
        (command.BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp Id.Op_DAmp]
              children: [
                (command.Simple
                  words: [{(echo)} {(DQ ($ Id.VSub_Number '$1'))}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:30)
                      fd: -1
                      arg_word: {(DQ ($ Id.VSub_Number '$1'))}
                    )
                  ]
                )
                (C {(git)} {(add)} {(DQ ($ Id.VSub_Number '$1'))})
                (C {(git)} {(commit)} {(-m)} {(DQ ($ Id.VSub_Number '$1'))})
              ]
            )
          ]
        )
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:setup span_id:67))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:71) (Token id:Id.Lit_Chars val:'\n' span_id:72) 
          (Token id:Id.Lit_Chars val:'\tmake_commit 1 &&\n' span_id:73) (Token id:Id.Lit_Chars val:'\tgit branch side &&\n' span_id:74) 
          (Token id:Id.Lit_Chars val:'\tmake_commit 2 &&\n' span_id:75) (Token id:Id.Lit_Chars val:'\tmake_commit 3 &&\n' span_id:76) 
          (Token id:Id.Lit_Chars val:'\tgit checkout side &&\n' span_id:77) (Token id:Id.Lit_Chars val:'\tmake_commit 4 &&\n' span_id:78) 
          (Token id:Id.Lit_Chars val:'\tgit merge master &&\n' span_id:79) (Token id:Id.Lit_Chars val:'\tgit checkout master\n' span_id:80) 
          (Token id:Id.Lit_Chars val:'\n' span_id:81)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-1} works' span_id:107))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:111) 
          (Token id:Id.Lit_Chars val:'\ttest_cmp_rev side @{-1}\n' span_id:112)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-1}~2 works' span_id:119))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:123) 
          (Token id:Id.Lit_Chars val:'\ttest_cmp_rev side~2 @{-1}~2\n' span_id:124)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-1}^2 works' span_id:131))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:135) 
          (Token id:Id.Lit_Chars val:'\ttest_cmp_rev side^2 @{-1}^2\n' span_id:136)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-1}@{1} works' span_id:143))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:147) 
          (Token id:Id.Lit_Chars val:'\ttest_cmp_rev side@{1} @{-1}@{1}\n' span_id:148)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-2} works' span_id:155))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:159) 
          (Token id:Id.Lit_Chars val:'\ttest_cmp_rev master @{-2}\n' span_id:160)
        )
      }
    )
    (C {(test_expect_success)} {(SQ (Token id:Id.Lit_Chars val:'@{-3} fails' span_id:167))} 
      {
        (SQ (Token id:Id.Lit_Chars val:'\n' span_id:171) 
          (Token id:Id.Lit_Chars val:'\ttest_must_fail git rev-parse @{-3}\n' span_id:172)
        )
      }
    )
    (C {(test_done)})
  ]
)