(command.CommandList
  children: [
    (command.ShAssignment
      left: <Id.Lit_VarLike 'test_description='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'test_description='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'test_description='> name:test_description)
          op: assign_op.Equal
          rhs: {(SQ <'test git rev-parse --verify'>)}
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <exec>
      more_env: []
      words: [{<exec>}]
      redirects: [(Redir op:<Id.Redir_Less '<'> loc:(redir_loc.Fd fd:0) arg:{<'/dev/null'>})]
      do_fork: T
    )
    (command.Simple
      blame_tok: <.>
      more_env: []
      words: [{<.>} {<'./test-lib.sh'>}]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <add_line_into_file>
      name: add_line_into_file
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.ShAssignment
              left: <Id.Lit_VarLike '_line='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_line='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_line='> name:_line)
                  op: assign_op.Equal
                  rhs: {($ Id.VSub_Number 1)}
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_file='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_file='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_file='> name:_file)
                  op: assign_op.Equal
                  rhs: {($ Id.VSub_Number 2)}
                )
              ]
              redirects: []
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.Simple
                              blame_tok: <Id.Lit_LBracket '['>
                              more_env: []
                              words: [
                                {<Id.Lit_LBracket '['>}
                                {<-f>}
                                {(DQ ($ Id.VSub_DollarName _file))}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.AndOr
                      children: [
                        (command.Simple
                          blame_tok: <echo>
                          more_env: []
                          words: [{<echo>} {(DQ ($ Id.VSub_DollarName _line))}]
                          redirects: [
                            (Redir
                              op: <Id.Redir_DGreat '>>'>
                              loc: (redir_loc.Fd fd:1)
                              arg: {($ Id.VSub_DollarName _file)}
                            )
                          ]
                          do_fork: T
                        )
                        (command.ControlFlow
                          keyword: <Id.ControlFlow_Return return>
                          arg_word: {($ Id.VSub_QMark '?')}
                        )
                      ]
                      ops: [<Id.Op_DPipe _>]
                    )
                    (command.ShAssignment
                      left: <Id.Lit_VarLike 'MSG='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike 'MSG='>
                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'MSG='> name:MSG)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (DQ <'Add <'> ($ Id.VSub_DollarName _line) <'> into <'> 
                                ($ Id.VSub_DollarName _file) <'>.'>
                              )
                            }
                        )
                      ]
                      redirects: []
                    )
                  ]
                  spids: [45 58]
                )
              ]
              else_kw: <Id.KW_Else else>
              else_action: [
                (command.AndOr
                  children: [
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(DQ ($ Id.VSub_DollarName _line))}]
                      redirects: [
                        (Redir
                          op: <Id.Redir_Great '>'>
                          loc: (redir_loc.Fd fd:1)
                          arg: {($ Id.VSub_DollarName _file)}
                        )
                      ]
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {($ Id.VSub_QMark '?')}
                    )
                  ]
                  ops: [<Id.Op_DPipe _>]
                )
                (command.AndOr
                  children: [
                    (command.Simple
                      blame_tok: <git>
                      more_env: []
                      words: [{<git>} {<add>} {($ Id.VSub_DollarName _file)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {($ Id.VSub_QMark '?')}
                    )
                  ]
                  ops: [<Id.Op_DPipe _>]
                )
                (command.ShAssignment
                  left: <Id.Lit_VarLike 'MSG='>
                  pairs: [
                    (AssignPair
                      left: <Id.Lit_VarLike 'MSG='>
                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'MSG='> name:MSG)
                      op: assign_op.Equal
                      rhs: 
                        {
                          (DQ <'Create file <'> ($ Id.VSub_DollarName _file) <'> with <'> 
                            ($ Id.VSub_DollarName _line) <'> inside.'>
                          )
                        }
                    )
                  ]
                  redirects: []
                )
              ]
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Simple
              blame_tok: <test_tick>
              more_env: []
              words: [{<test_tick>}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <git>
              more_env: []
              words: [
                {<git>}
                {<commit>}
                {<--quiet>}
                {<-m>}
                {(DQ ($ Id.VSub_DollarName MSG))}
                {($ Id.VSub_DollarName _file)}
              ]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'HASH1='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'HASH1='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'HASH1='> name:HASH1)
          op: assign_op.Equal
          rhs: (rhs_word__Empty)
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'HASH2='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'HASH2='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'HASH2='> name:HASH2)
          op: assign_op.Equal
          rhs: (rhs_word__Empty)
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'HASH3='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'HASH3='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'HASH3='> name:HASH3)
          op: assign_op.Equal
          rhs: (rhs_word__Empty)
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'HASH4='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'HASH4='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'HASH4='> name:HASH4)
          op: assign_op.Equal
          rhs: (rhs_word__Empty)
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'set up basic repo with 1 file (hello) and 4 commits'>)}
        {
          (SQ <'\n'> <'\tadd_line_into_file "1: Hello World" hello &&\n'> 
            <'\tHASH1=$(git rev-parse --verify HEAD) &&\n'> <'\tadd_line_into_file "2: A new day for git" hello &&\n'> 
            <'\tHASH2=$(git rev-parse --verify HEAD) &&\n'> <'\tadd_line_into_file "3: Another new day for git" hello &&\n'> 
            <'\tHASH3=$(git rev-parse --verify HEAD) &&\n'> <'\tadd_line_into_file "4: Ciao for now" hello &&\n'> <'\tHASH4=$(git rev-parse --verify HEAD)\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'works with one good rev'>)}
        {
          (SQ <'\n'> <'\trev_hash1=$(git rev-parse --verify $HASH1) &&\n'> 
            <'\ttest "$rev_hash1" = "$HASH1" &&\n'> <'\trev_hash2=$(git rev-parse --verify $HASH2) &&\n'> <'\ttest "$rev_hash2" = "$HASH2" &&\n'> 
            <'\trev_hash3=$(git rev-parse --verify $HASH3) &&\n'> <'\ttest "$rev_hash3" = "$HASH3" &&\n'> <'\trev_hash4=$(git rev-parse --verify $HASH4) &&\n'> 
            <'\ttest "$rev_hash4" = "$HASH4" &&\n'> <'\trev_master=$(git rev-parse --verify master) &&\n'> <'\ttest "$rev_master" = "$HASH4" &&\n'> 
            <'\trev_head=$(git rev-parse --verify HEAD) &&\n'> <'\ttest "$rev_head" = "$HASH4"\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'fails with any bad rev or many good revs'>)}
        {
          (SQ <'\n'> <'\ttest_must_fail git rev-parse --verify 2>error &&\n'> 
            <'\tgrep "single revision" error &&\n'> <'\ttest_must_fail git rev-parse --verify foo 2>error &&\n'> <'\tgrep "single revision" error &&\n'> 
            <'\ttest_must_fail git rev-parse --verify HEAD bar 2>error &&\n'> <'\tgrep "single revision" error &&\n'> 
            <'\ttest_must_fail git rev-parse --verify baz HEAD 2>error &&\n'> <'\tgrep "single revision" error &&\n'> 
            <'\ttest_must_fail git rev-parse --verify $HASH2 HEAD 2>error &&\n'> <'\tgrep "single revision" error\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'fails silently when using -q'>)}
        {
          (SQ <'\n'> <'\ttest_must_fail git rev-parse --verify --quiet 2>error &&\n'> 
            <'\ttest_must_be_empty error &&\n'> <'\ttest_must_fail git rev-parse -q --verify foo 2>error &&\n'> <'\ttest_must_be_empty error &&\n'> 
            <'\ttest_must_fail git rev-parse --verify -q HEAD bar 2>error &&\n'> <'\ttest_must_be_empty error &&\n'> 
            <'\ttest_must_fail git rev-parse --quiet --verify baz HEAD 2>error &&\n'> <'\ttest_must_be_empty error &&\n'> 
            <'\ttest_must_fail git rev-parse -q --verify $HASH2 HEAD 2>error &&\n'> <'\ttest_must_be_empty error\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'fails silently when using -q with deleted reflogs'>)}
        {
          (SQ <'\n'> <'\tref=$(git rev-parse HEAD) &&\n'> 
            <'\tgit update-ref --create-reflog -m "message for refs/test" refs/test "$ref" &&\n'> <'\tgit reflog delete --updateref --rewrite refs/test@{0} &&\n'> 
            <'\ttest_must_fail git rev-parse -q --verify refs/test@{0} >error 2>&1 &&\n'> <'\ttest_must_be_empty error\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'fails silently when using -q with not enough reflogs'>)}
        {
          (SQ <'\n'> <'\tref=$(git rev-parse HEAD) &&\n'> 
            <'\tgit update-ref --create-reflog -m "message for refs/test2" refs/test2 "$ref" &&\n'> <'\ttest_must_fail git rev-parse -q --verify refs/test2@{999} >error 2>&1 &&\n'> 
            <'\ttest_must_be_empty error\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'succeeds silently with -q and reflogs that do not go far back enough in time'>)}
        {
          (SQ <'\n'> <'\tref=$(git rev-parse HEAD) &&\n'> 
            <'\tgit update-ref --create-reflog -m "message for refs/test3" refs/test3 "$ref" &&\n'> <'\tgit rev-parse -q --verify refs/test3@{1.year.ago} >actual 2>error &&\n'> 
            <'\ttest_must_be_empty error &&\n'> <'\techo "$ref" >expect &&\n'> <'\ttest_cmp expect actual\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'no stdout output on error'>)}
        {
          (SQ <'\n'> <'\ttest -z "$(git rev-parse --verify)" &&\n'> 
            <'\ttest -z "$(git rev-parse --verify foo)" &&\n'> <'\ttest -z "$(git rev-parse --verify baz HEAD)" &&\n'> 
            <'\ttest -z "$(git rev-parse --verify HEAD bar)" &&\n'> <'\ttest -z "$(git rev-parse --verify $HASH2 HEAD)"\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'use --default'>)}
        {
          (SQ <'\n'> <'\tgit rev-parse --verify --default master &&\n'> 
            <'\tgit rev-parse --verify --default master HEAD &&\n'> <'\tgit rev-parse --default master --verify &&\n'> 
            <'\tgit rev-parse --default master --verify HEAD &&\n'> <'\tgit rev-parse --verify HEAD --default master &&\n'> 
            <'\ttest_must_fail git rev-parse --verify foo --default master &&\n'> <'\ttest_must_fail git rev-parse --default HEAD --verify bar &&\n'> 
            <'\ttest_must_fail git rev-parse --verify --default HEAD baz &&\n'> <'\ttest_must_fail git rev-parse --default foo --verify &&\n'> 
            <'\ttest_must_fail git rev-parse --verify --default bar\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {(SQ <'master@{n} for various n'>)}
        {
          (SQ <'\n'> <'\tN=$(git reflog | wc -l) &&\n'> <'\tNm1=$(($N-1)) &&\n'> 
            <'\tNp1=$(($N+1)) &&\n'> <'\tgit rev-parse --verify master@{0} &&\n'> <'\tgit rev-parse --verify master@{1} &&\n'> 
            <'\tgit rev-parse --verify master@{$Nm1} &&\n'> <'\ttest_must_fail git rev-parse --verify master@{$N} &&\n'> 
            <'\ttest_must_fail git rev-parse --verify master@{$Np1}\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_expect_success>
      more_env: []
      words: [
        {<test_expect_success>}
        {<SYMLINKS>}
        {(SQ <'ref resolution not confused by broken symlinks'>)}
        {
          (SQ <'\n'> <'\tln -s does-not-exist .git/refs/heads/broken &&\n'> 
            <'\ttest_must_fail git rev-parse --verify broken\n'>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <test_done>
      more_env: []
      words: [{<test_done>}]
      redirects: []
      do_fork: T
    )
  ]
)