(command.CommandList
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      {
        (braced_var_sub
          token: <Id.VSub_Name srcdir>
          suffix_op: (suffix_op.Unary tok:<Id.VTest_Equals '='> arg_word:{<.>})
        )
      }
    )
    (command.CommandList
      children: [
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          child: (C {<.>} {(DQ ($ Id.VSub_DollarName '$srcdir') <'/init.sh'>)})
          terminator: <Id.Op_Semi _>
        )
        (C {<path_prepend_>} {<.>})
      ]
    )
    (command.ShAssignment
      pairs: [(assign_pair lhs:(sh_lhs_expr.Name name:fail) op:assign_op.Equal rhs:{<0>} spids:[73])]
    )
    (command.ShFunction
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      body: 
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            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<touch>} {<empty>})
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {<1>}
                      spids: [90]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{<echo>} {<xyz>}]
                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<Id.KW_In in>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {<1>}
                      spids: [104]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{<compare>} {<'/dev/null'>} {<'/dev/null'>}]
                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<out>}
                    )
                    (redir
                      op: <Id.Redir_Great '2>'>
                      loc: (redir_loc.Fd fd:2)
                      arg: {<err>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
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                      spids: [123]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {<test>} {<-s>} {<out>})
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                  {
                    (DQ <'out not empty: '> 
                      (command_sub
                        left_token: <Id.Left_DollarParen '$('>
                        child: (C {<cat>} {<out>})
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
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                )
                (case_arm
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                  action: [
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                      children: [
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                        (C {<fail_>} 
                          {
                            (DQ <'err not empty: '> 
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                child: (C {<cat>} {<err>})
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [164 165 185 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{<compare>} {<'/dev/null'>} {<empty>}]
                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<out>}
                    )
                    (redir
                      op: <Id.Redir_Great '2>'>
                      loc: (redir_loc.Fd fd:2)
                      arg: {<err>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
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                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {<1>}
                      spids: [205]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
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                (C {<fail_>} 
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                    (DQ <'out not empty: '> 
                      (command_sub
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                        child: (C {<cat>} {<out>})
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
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                )
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'>}]
                  action: [
                    (command.AndOr
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                      children: [
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                        (C {<fail_>} 
                          {
                            (DQ <'err not empty: '> 
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
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                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [242 243 263 -1]
                )
              ]
            )
            (command.AndOr
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              children: [
                (command.Simple
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                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<out>}
                    )
                    (redir
                      op: <Id.Redir_Great '2>'>
                      loc: (redir_loc.Fd fd:2)
                      arg: {<err>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
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                      spids: [283]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {<test>} {<-s>} {<out>})
                (C {<fail_>} 
                  {
                    (DQ <'out not empty: '> 
                      (command_sub
                        left_token: <Id.Left_DollarParen '$('>
                        child: (C {<cat>} {<out>})
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
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              arms: [
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'> <x> <Id.Lit_Star '*'>}]
                  spids: [313 316 318 -1]
                )
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'>}]
                  action: [
                    (command.AndOr
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                      children: [
                        (C {<test>} {<-s>} {<err>})
                        (C {<fail_>} 
                          {
                            (DQ <'err not empty: '> 
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                child: (C {<cat>} {<err>})
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [320 321 341 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.Simple
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                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<out>}
                    )
                    (redir
                      op: <Id.Redir_Great '2>'>
                      loc: (redir_loc.Fd fd:2)
                      arg: {<err>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {<1>}
                      spids: [361]
                    )
                  ]
                )
              ]
            )
            (command.Simple
              words: [{<cat>}]
              redirects: [
                (redir
                  op: <Id.Redir_DLess '<<'>
                  loc: (redir_loc.Fd fd:0)
                  arg: 
                    (redir_param.HereDoc
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                      here_end_span_id: 379
                      stdin_parts: [
                        <'diff -u /dev/null in\n'>
                        <'--- /dev/null\t1970-01-01\n'>
                        <'+++ in\t1970-01-01\n'>
                        <'+xyz\n'>
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                    )
                )
                (redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<exp>})
              ]
              do_fork: T
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<compare>} {<exp>} {<out>})
                (command.ShAssignment
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                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {<1>}
                      spids: [389]
                    )
                  ]
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'> <x> <Id.Lit_Star '*'>}]
                  spids: [399 402 404 -1]
                )
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'>}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (C {<test>} {<-s>} {<err>})
                        (C {<fail_>} 
                          {
                            (DQ <'err not empty: '> 
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                child: (C {<cat>} {<err>})
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                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [406 407 427 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.Simple
                  words: [{<compare>} {<empty>} {<Id.KW_In in>}]
                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
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                    )
                    (redir
                      op: <Id.Redir_Great '2>'>
                      loc: (redir_loc.Fd fd:2)
                      arg: {<err>}
                    )
                  ]
                  do_fork: T
                )
                (command.ShAssignment
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                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
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                      spids: [447]
                    )
                  ]
                )
              ]
            )
            (command.If
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                (if_arm
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                    (condition.Shell
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                          child: 
                            (command.Simple
                              words: [{<grep>} {<Id.Lit_At '@'>} {<out>}]
                              redirects: [
                                (redir
                                  op: <Id.Redir_Great '>'>
                                  loc: (redir_loc.Fd fd:1)
                                  arg: {<'/dev/null'>}
                                )
                              ]
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.AndOr
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                        (command.Simple
                          words: [{<sed>} {(SQ <'s/\t.*//;/^@@/d'>)} {<out>}]
                          redirects: [(redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<k>})]
                          do_fork: T
                        )
                        (C {<mv>} {<k>} {<out>})
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                    )
                    (command.Simple
                      words: [{<cat>}]
                      redirects: [
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                          op: <Id.Redir_DLess '<<'>
                          loc: (redir_loc.Fd fd:0)
                          arg: 
                            (redir_param.HereDoc
                              here_begin: 
                                {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\E'>) <OF>}
                              here_end_span_id: 524
                              stdin_parts: [<'--- empty\n'> <'+++ in\n'> <'+xyz\n'>]
                            )
                        )
                        (redir
                          op: <Id.Redir_Great '>'>
                          loc: (redir_loc.Fd fd:1)
                          arg: {<exp>}
                        )
                      ]
                      do_fork: T
                    )
                    (command.AndOr
                      ops: [Id.Op_DPipe]
                      children: [
                        (C {<compare>} {<exp>} {<out>})
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:fail)
                              op: assign_op.Equal
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                              spids: [534]
                            )
                          ]
                        )
                      ]
                    )
                  ]
                  spids: [455 467]
                )
              ]
            )
            (command.Case
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              arms: [
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                  pat_list: [{<Id.Lit_Star '*'> <x> <Id.Lit_Star '*'>}]
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                )
                (case_arm
                  pat_list: [{<Id.Lit_Star '*'>}]
                  action: [
                    (command.AndOr
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                          {
                            (DQ <'err not empty: '> 
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
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                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [554 555 575 -1]
                )
              ]
            )
          ]
        )
    )
    (C {<test_compare>})
    (C {<Exit>} {($ Id.VSub_DollarName '$fail')})
  ]
)