(command.CommandList
  children: [
    (command.ShFunction
      name_tok: <k_string_get_line>
      name: k_string_get_line
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<lineNo>} {<delim>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-eq>}
                                {<0>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_get_line requires least 1 argument'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [58 71]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'delim='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'delim='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'delim='> name:delim)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (DQ 
                        (CommandSub
                          left_token: <Id.Left_DollarParen '$('>
                          child: 
                            (command.Simple
                              blame_tok: <printf>
                              more_env: []
                              words: [{<printf>} {(SQ <'\\n '>)}]
                              redirects: []
                              do_fork: T
                            )
                          right: <Id.Eof_RParen _>
                        )
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'lineNo='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'lineNo='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'lineNo='> name:lineNo)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.Pipeline
              children: [
                (command.Simple
                  blame_tok: <echo>
                  more_env: []
                  words: [{<echo>} {(DQ ($ Id.VSub_At '@'))}]
                  redirects: []
                  do_fork: T
                )
                (command.Simple
                  blame_tok: <cut>
                  more_env: []
                  words: [
                    {<cut>}
                    {<-d>}
                    {
                      (DQ 
                        (BracedVarSub
                          left: <Id.Left_DollarBrace '${'>
                          token: <Id.VSub_Name delim>
                          var_name: delim
                          suffix_op: (suffix_op.Unary op:<Id.VOp1_Percent '%'> arg_word:{<' '>})
                          right: <Id.Right_DollarBrace '}'>
                        )
                      )
                    }
                    {<-f>}
                    {(DQ (${ Id.VSub_Name lineNo))}
                  ]
                  redirects: []
                  do_fork: T
                )
              ]
              ops: [<Id.Op_Pipe _>]
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_pad_right>
      name: k_string_pad_right
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<length>} {<text>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-eq>}
                                {<0>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_pad_right requires least 1 argument'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [181 194]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'length='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'length='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'length='> name:length)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <printf>
              more_env: []
              words: [{<printf>} {(DQ <'%-'> (${ Id.VSub_Name length) <s>)} {(DQ ($ Id.VSub_Star '*'))}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_pad_left>
      name: k_string_pad_left
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<length>} {<text>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-eq>}
                                {<0>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_pad_left requires least 1 argument'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [280 293]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'length='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'length='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'length='> name:length)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <printf>
              more_env: []
              words: [{<printf>} {(DQ <'%+'> (${ Id.VSub_Name length) <s>)} {(DQ ($ Id.VSub_Star '*'))}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_lower>
      name: k_string_lower
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Pipeline
              children: [
                (command.Simple
                  blame_tok: <printf>
                  more_env: []
                  words: [{<printf>} {(DQ <'%s'>)} {(DQ ($ Id.VSub_Star '*'))}]
                  redirects: []
                  do_fork: T
                )
                (command.Simple
                  blame_tok: <tr>
                  more_env: []
                  words: [{<tr>} {(SQ <'[:upper:]'>)} {(SQ <'[:lower:]'>)}]
                  redirects: []
                  do_fork: T
                )
              ]
              ops: [<Id.Op_Pipe _>]
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_upper>
      name: k_string_upper
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Pipeline
              children: [
                (command.Simple
                  blame_tok: <printf>
                  more_env: []
                  words: [{<printf>} {(DQ <'%s'>)} {(DQ ($ Id.VSub_Star '*'))}]
                  redirects: []
                  do_fork: T
                )
                (command.Simple
                  blame_tok: <tr>
                  more_env: []
                  words: [{<tr>} {(SQ <'[:lower:]'>)} {(SQ <'[:upper:]'>)}]
                  redirects: []
                  do_fork: T
                )
              ]
              ops: [<Id.Op_Pipe _>]
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_contains>
      name: k_string_contains
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<substring>} {<string>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-lt>}
                                {<2>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_contains requires least 2 arguments'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [483 496]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'substring='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'substring='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'substring='> name:substring)
                  op: assign_op.Equal
                  rhs: {(DQ (${ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'string='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'string='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'string='> name:string)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Star '*'))}
                )
              ]
              redirects: []
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.AndOr
                              children: [
                                (command.Simple
                                  blame_tok: <Id.Lit_LBracket '['>
                                  more_env: []
                                  words: [
                                    {<Id.Lit_LBracket '['>}
                                    {
                                      (DQ 
                                        (BracedVarSub
                                          left: <Id.Left_DollarBrace '${'>
                                          token: <Id.VSub_Name string>
                                          var_name: string
                                          prefix_op: <Id.VSub_Pound '#'>
                                          right: <Id.Right_DollarBrace '}'>
                                        )
                                      )
                                    }
                                    {<-gt>}
                                    {<0>}
                                    {<Id.Lit_RBracket ']'>}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <Id.Lit_LBracket '['>
                                  more_env: []
                                  words: [
                                    {<Id.Lit_LBracket '['>}
                                    {
                                      (DQ 
                                        (BracedVarSub
                                          left: <Id.Left_DollarBrace '${'>
                                          token: <Id.VSub_Name string>
                                          var_name: string
                                          suffix_op: 
                                            (suffix_op.Unary
                                              op: <Id.VOp1_Percent '%'>
                                              arg_word: 
                                                {<Id.Lit_Other '*'> (${ Id.VSub_Name substring) 
                                                  <Id.Lit_Other '*'>
                                                }
                                            )
                                          right: <Id.Right_DollarBrace '}'>
                                        )
                                      )
                                    }
                                    {<Id.KW_Bang '!'> <Id.Lit_Equals '='>}
                                    {(DQ (${ Id.VSub_Name string))}
                                    {<Id.Lit_RBracket ']'>}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                              ]
                              ops: [<Id.Op_DAmp _>]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [(command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})]
                  spids: [533 578]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<1>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_starts_with>
      name: k_string_starts_with
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<substring>} {<string>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-lt>}
                                {<2>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_starts_with requires least 2 arguments'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [635 648]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'substring='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'substring='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'substring='> name:substring)
                  op: assign_op.Equal
                  rhs: {(DQ (${ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'string='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'string='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'string='> name:string)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Star '*'))}
                )
              ]
              redirects: []
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.AndOr
                              children: [
                                (command.Simple
                                  blame_tok: <Id.Lit_LBracket '['>
                                  more_env: []
                                  words: [
                                    {<Id.Lit_LBracket '['>}
                                    {
                                      (DQ 
                                        (BracedVarSub
                                          left: <Id.Left_DollarBrace '${'>
                                          token: <Id.VSub_Name string>
                                          var_name: string
                                          prefix_op: <Id.VSub_Pound '#'>
                                          right: <Id.Right_DollarBrace '}'>
                                        )
                                      )
                                    }
                                    {<-gt>}
                                    {<0>}
                                    {<Id.Lit_RBracket ']'>}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <Id.Lit_LBracket '['>
                                  more_env: []
                                  words: [
                                    {<Id.Lit_LBracket '['>}
                                    {
                                      (DQ 
                                        (BracedVarSub
                                          left: <Id.Left_DollarBrace '${'>
                                          token: <Id.VSub_Name string>
                                          var_name: string
                                          suffix_op: 
                                            (suffix_op.Unary
                                              op: <Id.VOp1_DPercent '%%'>
                                              arg_word: 
                                                {(${ Id.VSub_Name substring) <Id.Lit_Other '*'>}
                                            )
                                          right: <Id.Right_DollarBrace '}'>
                                        )
                                      )
                                    }
                                    {<Id.Lit_Equals '='>}
                                    {(DQ )}
                                    {<Id.Lit_RBracket ']'>}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                              ]
                              ops: [<Id.Op_DAmp _>]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [(command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})]
                  spids: [685 725]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<1>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <k_string_ends_with>
      name: k_string_ends_with
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<substring>} {<string>}]
              redirects: []
              do_fork: T
            )
            (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 '['>}
                                {($ Id.VSub_Pound '#')}
                                {<-lt>}
                                {<2>}
                                {<Id.Lit_RBracket ']'>}
                              ]
                              redirects: []
                              do_fork: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <k_log_err>
                      more_env: []
                      words: [{<k_log_err>} {(DQ <'k_string_ends_with requires least 2 arguments'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [782 795]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'substring='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'substring='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'substring='> name:substring)
                  op: assign_op.Equal
                  rhs: {(DQ (${ Id.VSub_Number 1))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <shift>
              more_env: []
              words: [{<shift>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'string='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'string='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'string='> name:string)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_Star '*'))}
                )
              ]
              redirects: []
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                          child: 
                            (command.ShAssignment
                              left: <Id.Lit_VarLike 'value='>
                              pairs: [
                                (AssignPair
                                  left: <Id.Lit_VarLike 'value='>
                                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'value='> name:value)
                                  op: assign_op.Equal
                                  rhs: 
                                    {
                                      (DQ 
                                        (CommandSub
                                          left_token: <Id.Left_DollarParen '$('>
                                          child: 
                                            (command.Simple
                                              blame_tok: <k_string_keyword_error>
                                              more_env: []
                                              words: [
                                                {<k_string_keyword_error>}
                                                {(DQ ($ Id.VSub_At '@'))}
                                              ]
                                              redirects: []
                                              do_fork: T
                                            )
                                          right: <Id.Eof_RParen _>
                                        )
                                      )
                                    }
                                )
                              ]
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(DQ (${ Id.VSub_Name value))}]
                      redirects: []
                      do_fork: T
                    )
                  ]
                  spids: [1562 1576]
                )
              ]
              else_kw: <Id.KW_Else else>
              else_action: [
                (command.Simple
                  blame_tok: <shift>
                  more_env: []
                  words: [
                    {<shift>}
                    {
                      (word_part.ArithSub
                        left: <Id.Left_DollarDParen '$(('>
                        anode: 
                          (arith_expr.Binary
                            op_id: Id.Arith_Minus
                            left: {($ Id.VSub_Pound '#')}
                            right: {<Id.Lit_Digits 1>}
                          )
                        right: <Id.Right_DollarDParen _>
                      )
                    }
                  ]
                  redirects: []
                  do_fork: T
                )
                (command.Simple
                  blame_tok: <echo>
                  more_env: []
                  words: [{<echo>} {(DQ ($ Id.VSub_Number 1))}]
                  redirects: []
                  do_fork: T
                )
              ]
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
  ]
)