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    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.ShAssignment
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                (assign_pair
                  lhs: (sh_lhs_expr.Name name:Z)
                  op: assign_op.Equal
                  rhs: {(DQ (compress))}
                  spids: [15]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:19)
        )
        (command.Sentence
          child: 
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:unZ)
                  op: assign_op.Equal
                  rhs: {(DQ (uncompress))}
                  spids: [21]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:26)
        )
        (command.ShAssignment
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            (assign_pair
              lhs: (sh_lhs_expr.Name name:Zlist)
              op: assign_op.Equal
              rhs: {(DQ )}
              spids: [28]
            )
          ]
        )
      ]
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:gz)
                  op: assign_op.Equal
                  rhs: {(DQ (gzip))}
                  spids: [32]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:37)
        )
        (command.Sentence
          child: 
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:ungz)
                  op: assign_op.Equal
                  rhs: {(DQ (gunzip))}
                  spids: [39]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:44)
        )
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:gzlist)
              op: assign_op.Equal
              rhs: {(DQ )}
              spids: [46]
            )
          ]
        )
      ]
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:bz)
                  op: assign_op.Equal
                  rhs: {(DQ (bzip2))}
                  spids: [50]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:55)
        )
        (command.Sentence
          child: 
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:unbz)
                  op: assign_op.Equal
                  rhs: {(DQ (bunzip2))}
                  spids: [57]
                )
              ]
            )
          terminator: (Token id:Id.Op_Semi val:';' span_id:62)
        )
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:bzlist)
              op: assign_op.Equal
              rhs: {(DQ )}
              spids: [64]
            )
          ]
        )
      ]
    )
    (command.ForEach
      iter_name: arg
      do_arg_iter: T
      body: 
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            (command.If
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                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (C {(Id.Lit_LBracket '[')} {(-f)} {(DQ ($ Id.VSub_DollarName '$arg'))} 
                          {(Id.Lit_RBracket ']')}
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:105)
                    )
                  ]
                  action: [
                    (command.Case
                      to_match: {(DQ ($ Id.VSub_DollarName '$arg'))}
                      arms: [
                        (case_arm
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                          action: [
                            (C {($ Id.VSub_DollarName '$unZ')} {(DQ ($ Id.VSub_DollarName '$arg'))})
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:arg)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ 
                                        (command_sub
                                          left_token: 
                                            (Token
                                              id: Id.Left_DollarParen
                                              val: '$('
                                              span_id: 132
                                            )
                                          command_list: 
                                            (command.CommandList
                                              children: [
                                                (command.Pipeline
                                                  children: [
                                                    (C {(echo)} {($ Id.VSub_DollarName '$arg')})
                                                    (C {(sed)} 
                                                      {
                                                        (SQ 
                                                          (Token
                                                            id: Id.Lit_Chars
                                                            val: 's/\\.Z$//'
                                                            span_id: 142
                                                          )
                                                        )
                                                      }
                                                    )
                                                  ]
                                                  negated: F
                                                )
                                              ]
                                            )
                                        )
                                      )
                                    }
                                  spids: [130]
                                )
                              ]
                            )
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:Zlist)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ ($ Id.VSub_DollarName '$Zlist') (' ') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:152)
                                        ) ($ Id.VSub_DollarName '$arg') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:154)
                                        )
                                      )
                                    }
                                  spids: [148]
                                )
                              ]
                            )
                          ]
                          spids: [119 121 158 -1]
                        )
                        (case_arm
                          pat_list: [{(Id.Lit_Star '*') (.gz)}]
                          action: [
                            (C {($ Id.VSub_DollarName '$ungz')} {(DQ ($ Id.VSub_DollarName '$arg'))})
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:arg)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ 
                                        (command_sub
                                          left_token: 
                                            (Token
                                              id: Id.Left_DollarParen
                                              val: '$('
                                              span_id: 175
                                            )
                                          command_list: 
                                            (command.CommandList
                                              children: [
                                                (command.Pipeline
                                                  children: [
                                                    (C {(echo)} {($ Id.VSub_DollarName '$arg')})
                                                    (C {(sed)} 
                                                      {
                                                        (SQ 
                                                          (Token
                                                            id: Id.Lit_Chars
                                                            val: 's/\\.gz$//'
                                                            span_id: 185
                                                          )
                                                        )
                                                      }
                                                    )
                                                  ]
                                                  negated: F
                                                )
                                              ]
                                            )
                                        )
                                      )
                                    }
                                  spids: [173]
                                )
                              ]
                            )
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:gzlist)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ ($ Id.VSub_DollarName '$gzlist') (' ') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:195)
                                        ) ($ Id.VSub_DollarName '$arg') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:197)
                                        )
                                      )
                                    }
                                  spids: [191]
                                )
                              ]
                            )
                          ]
                          spids: [162 164 201 -1]
                        )
                        (case_arm
                          pat_list: [{(Id.Lit_Star '*') (.bz2)}]
                          action: [
                            (C {($ Id.VSub_DollarName '$unbz')} {(DQ ($ Id.VSub_DollarName '$arg'))})
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:arg)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ 
                                        (command_sub
                                          left_token: 
                                            (Token
                                              id: Id.Left_DollarParen
                                              val: '$('
                                              span_id: 218
                                            )
                                          command_list: 
                                            (command.CommandList
                                              children: [
                                                (command.Pipeline
                                                  children: [
                                                    (C {(echo)} {($ Id.VSub_DollarName '$arg')})
                                                    (C {(sed)} 
                                                      {
                                                        (SQ 
                                                          (Token
                                                            id: Id.Lit_Chars
                                                            val: 's/\\.bz2$//'
                                                            span_id: 228
                                                          )
                                                        )
                                                      }
                                                    )
                                                  ]
                                                  negated: F
                                                )
                                              ]
                                            )
                                        )
                                      )
                                    }
                                  spids: [216]
                                )
                              ]
                            )
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:bzlist)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ ($ Id.VSub_DollarName '$bzlist') (' ') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:238)
                                        ) ($ Id.VSub_DollarName '$arg') 
                                        (word_part.EscapedLiteral
                                          token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:240)
                                        )
                                      )
                                    }
                                  spids: [234]
                                )
                              ]
                            )
                          ]
                          spids: [205 207 244 -1]
                        )
                      ]
                    )
                  ]
                  spids: [93 107]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:newargs)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (DQ 
                        (braced_var_sub
                          token: (Token id:Id.VSub_Name val:newargs span_id:257)
                          suffix_op: (suffix_op.Unary op_id:Id.VTest_ColonHyphen arg_word:{(DQ )})
                        ) (' ') (word_part.EscapedLiteral token:(Token id:Id.Lit_EscapedChar val:'\\"' span_id:263)) 
                        ($ Id.VSub_DollarName '$arg') (word_part.EscapedLiteral token:(Token id:Id.Lit_EscapedChar val:'\\"' span_id:265))
                      )
                    }
                  spids: [254]
                )
              ]
            )
          ]
        )
    )
    (command.Case
      to_match: {($ Id.VSub_Number '$0')}
      arms: [
        (case_arm
          pat_list: [{(Id.Lit_Star '*') (zcat) (Id.Lit_Star '*')}]
          action: [(C {(eval)} {(cat)} {($ Id.VSub_DollarName '$newargs')})]
          spids: [278 282 290 -1]
        )
        (case_arm
          pat_list: [{(Id.Lit_Star '*') (zmore) (Id.Lit_Star '*')}]
          action: [(C {(eval)} {(more)} {($ Id.VSub_DollarName '$newargs')})]
          spids: [293 297 305 -1]
        )
        (case_arm
          pat_list: [{(Id.Lit_Star '*') (zgrep) (Id.Lit_Star '*')}]
          action: [(C {(eval)} {(grep)} {($ Id.VSub_DollarName '$newargs')})]
          spids: [308 312 320 -1]
        )
        (case_arm
          pat_list: [{(Id.Lit_Star '*')}]
          action: [
            (command.Sentence
              child: 
                (command.Simple
                  words: [
                    {(echo)}
                    {(DQ ($ Id.VSub_Number '$0') (": unknown base name. Can't proceed."))}
                  ]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_GreatAnd val:'>&' span_id:334)
                      fd: -1
                      arg_word: {(2)}
                    )
                  ]
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:336)
            )
            (command.ControlFlow
              token: (Token id:Id.ControlFlow_Exit val:exit span_id:338)
              arg_word: {(1)}
            )
          ]
          spids: [323 325 -1 342]
        )
      ]
    )
    (command.If
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        (if_arm
          cond: [
            (command.Sentence
              child: 
                (C {(Id.Lit_LBracket '[')} {(Id.KW_Bang '!')} {(-z)} 
                  {(DQ ($ Id.VSub_DollarName '$Zlist'))} {(Id.Lit_RBracket ']')}
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:363)
            )
          ]
          action: [(C {(eval)} {($ Id.VSub_DollarName '$Z')} {($ Id.VSub_DollarName '$Zlist')})]
          spids: [349 365]
        )
      ]
    )
    (command.If
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        (if_arm
          cond: [
            (command.Sentence
              child: 
                (C {(Id.Lit_LBracket '[')} {(Id.KW_Bang '!')} {(-z)} 
                  {(DQ ($ Id.VSub_DollarName '$gzlist')) (Id.Lit_RBracket ']')}
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:389)
            )
          ]
          action: [(C {(eval)} {($ Id.VSub_DollarName '$gz')} {($ Id.VSub_DollarName '$gzlist')})]
          spids: [376 391]
        )
      ]
    )
    (command.If
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        (if_arm
          cond: [
            (command.Sentence
              child: 
                (C {(Id.Lit_LBracket '[')} {(Id.KW_Bang '!')} {(-z)} 
                  {(DQ ($ Id.VSub_DollarName '$bzlist'))} {(Id.Lit_RBracket ']')}
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:416)
            )
          ]
          action: [(C {(eval)} {($ Id.VSub_DollarName '$bz')} {($ Id.VSub_DollarName '$bzlist')})]
          spids: [402 418]
        )
      ]
    )
    (command.ControlFlow token:(Token id:Id.ControlFlow_Exit val:exit span_id:435) arg_word:{(0)})
  ]
)