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      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_debugger_show_commands>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_command_help_show>}]
      redirects: []
      do_fork: T
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    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_show_nolist>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
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      more_env: []
      words: [{<_Dbg_help_add>} {<show>} {(SQ )} {<1>} {<_Dbg_complete_show>}]
      redirects: []
      do_fork: T
    )
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      iter_names: [_Dbg_file]
      iterable: 
        (for_iter.Words
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      semi_tok: <Id.Op_Semi _>
      body: 
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          children: [
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              blame_tok: <source>
              more_env: []
              words: [{<source>} {($ Id.VSub_DollarName _Dbg_file)}]
              redirects: []
              do_fork: T
            )
          ]
          right: <Id.KW_Done done>
        )
      redirects: []
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    (command.ShFunction
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      name: _Dbg_complete_show
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          children: [
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              blame_tok: <_Dbg_complete_subcmd>
              more_env: []
              words: [{<_Dbg_complete_subcmd>} {<show>}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
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      name: _Dbg_do_show
      body: 
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          left: <Id.Lit_LBrace '{'>
          children: [
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              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<Id.Lit_VarLike 'subcmd='> ($ Id.VSub_Number 1)}]
              redirects: []
              do_fork: T
            )
            (command.AndOr
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                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_GreatEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.Simple
                  blame_tok: <shift>
                  more_env: []
                  words: [{<shift>}]
                  redirects: []
                  do_fork: T
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<Id.Lit_VarLike 'label='> ($ Id.VSub_Number 1)}]
              redirects: []
              do_fork: T
            )
            (command.AndOr
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                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_GreatEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.Simple
                  blame_tok: <shift>
                  more_env: []
                  words: [{<shift>}]
                  redirects: []
                  do_fork: T
                )
              ]
              ops: [<Id.Op_DAmp _>]
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            (command.If
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              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
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                              left: <Id.KW_DLeftBracket '[['>
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_z
                                  child: {($ Id.VSub_DollarName subcmd)}
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                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
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                      blame_tok: <typeset>
                      more_env: []
                      words: [{<typeset>} {<thing>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Sentence
                      child: 
                        (command.Simple
                          blame_tok: <typeset>
                          more_env: []
                          words: [{<typeset>} {<list>}]
                          redirects: []
                          do_fork: T
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                      terminator: <Id.Op_Semi _>
                    )
                    (command.ShAssignment
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                      pairs: [
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                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'list='> name:list)
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                          rhs: 
                            {
                              (ShArrayLiteral
                                left: <Id.Op_LParen _>
                                words: [
                                  {
                                    (DQ 
                                      (BracedVarSub
                                        left: <Id.Left_DollarBrace '${'>
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                                        var_name: _Dbg_debugger_show_commands
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                                    )
                                  }
                                ]
                                right: <Id.Right_ShArrayLiteral _>
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                        )
                      ]
                      redirects: []
                    )
                    (command.Simple
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                      more_env: []
                      words: [
                        {<sort_list>}
                        {<0>}
                        {
                          (BracedVarSub
                            left: <Id.Left_DollarBrace '${'>
                            token: <Id.VSub_Name list>
                            var_name: list
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                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.ForEach
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                      iter_names: [thing]
                      iterable: 
                        (for_iter.Words
                          words: [
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                              (BracedVarSub
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                                token: <Id.VSub_Name list>
                                var_name: list
                                bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                                right: <Id.Right_DollarBrace '}'>
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                        )
                      semi_tok: <Id.Op_Semi _>
                      body: 
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                          children: [
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                                  left: <Id.KW_DLeftBracket '[['>
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_n
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                                        {
                                          (BracedVarSub
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                                              (bracket_op.ArrayIndex
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                                          )
                                        }
                                    )
                                  right: <Id.Lit_DRightBracket ']]'>
                                  redirects: []
                                )
                                (command.Simple
                                  blame_tok: <_Dbg_do_show>
                                  more_env: []
                                  words: [{<_Dbg_do_show>} {($ Id.VSub_DollarName thing)} {<1>}]
                                  redirects: []
                                  do_fork: T
                                )
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                              ops: [<Id.Op_DPipe _>]
                            )
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                          right: <Id.KW_Done done>
                        )
                      redirects: []
                    )
                    (command.ControlFlow
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                      arg_word: {<0>}
                    )
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                  spids: [199 211]
                )
                (IfArm
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                  cond: 
                    (condition.Shell
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                            (command.DBracket
                              left: <Id.KW_DLeftBracket '[['>
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_n
                                  child: 
                                    {
                                      (BracedVarSub
                                        left: <Id.Left_DollarBrace '${'>
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                                        var_name: _Dbg_debugger_show_commands
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                                          (bracket_op.ArrayIndex
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                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
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                          terminator: <Id.Op_Semi _>
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                    )
                  then_kw: <Id.KW_Then then>
                  action: [
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                      more_env: []
                      words: [
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                          (BracedVarSub
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                            right: <Id.Right_DollarBrace '}'>
                          )
                        }
                        {(DQ ($ Id.VSub_DollarName label))}
                        {(DQ ($ Id.VSub_At '@'))}
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
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                      arg_word: {<0>}
                    )
                  ]
                  spids: [301 318]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Case
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              to_match: (case_arg.Word w:{($ Id.VSub_DollarName subcmd)})
              arms_start: <Id.KW_In in>
              arms: [
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                  pattern: 
                    (pat.Words
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                  middle: <Id.Right_CasePat _>
                  action: [
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                        (command.DBracket
                          left: <Id.KW_DLeftBracket '[['>
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName label)}
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                          redirects: []
                        )
                        (command.ShAssignment
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                          pairs: [
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                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'label='> name:label)
                              op: assign_op.Equal
                              rhs: 
                                {
                                  (CommandSub
                                    left_token: <Id.Left_DollarParen '$('>
                                    child: 
                                      (command.Simple
                                        blame_tok: <_Dbg_printf_nocr>
                                        more_env: []
                                        words: [
                                          {<_Dbg_printf_nocr>}
                                          {(DQ <'%-12s: '>)}
                                          {(SQ <'line tracing'>)}
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                                        redirects: []
                                        do_fork: T
                                      )
                                    right: <Id.Eof_RParen _>
                                  )
                                }
                            )
                          ]
                          redirects: []
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                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.AndOr
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                        (command.DBracket
                          left: <Id.KW_DLeftBracket '[['>
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName label)}
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                          right: <Id.Lit_DRightBracket ']]'>
                          redirects: []
                        )
                        (command.ShAssignment
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                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'label='> name:label)
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                          redirects: []
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                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.Simple
                      blame_tok: <typeset>
                      more_env: []
                      words: [{<typeset>} {<Id.Lit_VarLike 'onoff='> (DQ <off.>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.AndOr
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                          child: 
                            (arith_expr.Binary
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                              right: {<Id.Lit_Digits 0>}
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                          right: <Id.Op_DRightParen _>
                          redirects: []
                        )
                        (command.ShAssignment
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                          pairs: [
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                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'onoff='> name:onoff)
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                          redirects: []
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                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.Simple
                      blame_tok: <_Dbg_msg>
                      more_env: []
                      words: [
                        {<_Dbg_msg>}
                        {(DQ (${ Id.VSub_Name label) <'Show line tracing is'>)}
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                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <_Dbg_msg>
                      more_env: []
                      words: [
                        {<_Dbg_msg>}
                        {
                          (DQ (${ Id.VSub_Name label) <'Show line trace delay is '> 
                            (${ Id.VSub_Name _Dbg_linetrace_delay) <.>
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                      ]
                      redirects: []
                      do_fork: T
                    )
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                  right: <Id.Op_DSemi _>
                )
                (CaseArm
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                  pattern: 
                    (pat.Words
                      words: [{<lo>} {<log>} {<logg>} {<loggi>} {<loggin>} {<logging>}]
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                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.Simple
                      blame_tok: <shift>
                      more_env: []
                      words: [{<shift>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <_Dbg_do_show_logging>
                      more_env: []
                      words: [{<_Dbg_do_show_logging>} {($ Id.VSub_At '@')}]
                      redirects: []
                      do_fork: T
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                  right: <Id.Op_DSemi _>
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                (CaseArm
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                  pattern: 
                    (pat.Words
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                        {<show>}
                        {<showc>}
                        {<showco>}
                        {<showcom>}
                        {<showcomm>}
                        {<showcomma>}
                        {<showcomman>}
                        {<showcommand>}
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                  middle: <Id.Right_CasePat _>
                  action: [
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                          redirects: []
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                              rhs: 
                                {
                                  (CommandSub
                                    left_token: <Id.Left_DollarParen '$('>
                                    child: 
                                      (command.Simple
                                        blame_tok: <_Dbg_printf_nocr>
                                        more_env: []
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                                          {<_Dbg_printf_nocr>}
                                          {(DQ <'%-12s: '>)}
                                          {(SQ <showcommmand>)}
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                                        redirects: []
                                        do_fork: T
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                                    right: <Id.Eof_RParen _>
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                          redirects: []
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                      ops: [<Id.Op_DAmp _>]
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                    (command.Simple
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                      more_env: []
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                        {(DQ (${ Id.VSub_Name label) <'Show commands in debugger prompt is'>)}
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                      redirects: []
                      do_fork: T
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                  right: <Id.Op_DSemi _>
                )
                (CaseArm
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                  pattern: 
                    (pat.Words
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                        {<tr>}
                        {<tra>}
                        {<trac>}
                        {<trace>}
                        {<trace->}
                        {<tracec>}
                        {<trace-co>}
                        {<trace-com>}
                        {<trace-comm>}
                        {<trace-comma>}
                        {<trace-comman>}
                        {<trace-command>}
                        {<trace-commands>}
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                  middle: <Id.Right_CasePat _>
                  action: [
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                          left: <Id.KW_DLeftBracket '[['>
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                            (bool_expr.Unary
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                              child: {($ Id.VSub_DollarName label)}
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                          redirects: []
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                        (command.ShAssignment
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                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'label='> name:label)
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                              rhs: {(SQ <'trace-commands: '>)}
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                          redirects: []
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                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.Simple
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                      more_env: []
                      words: [
                        {<_Dbg_msg>}
                        {(DQ (${ Id.VSub_Name label) <'State of command tracing is'>)}
                        {(DQ ($ Id.VSub_DollarName _Dbg_set_trace_commands) <.>)}
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                      redirects: []
                      do_fork: T
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                  right: <Id.Op_DSemi _>
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                (CaseArm
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                  pattern: (pat.Words words:[{<tt>} {<tty>}])
                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.Simple
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                      more_env: []
                      words: [{<shift>}]
                      redirects: []
                      do_fork: T
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                    (command.Simple
                      blame_tok: <_Dbg_do_show_tty>
                      more_env: []
                      words: [{<_Dbg_do_show_tty>} {($ Id.VSub_At '@')}]
                      redirects: []
                      do_fork: T
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                  right: <Id.Op_DSemi _>
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                (CaseArm
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                  pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
                  middle: <Id.Right_CasePat _>
                  action: [
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                      more_env: []
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                        {<_Dbg_errmsg>}
                        {(DQ <'Unknown show subcommand: '> ($ Id.VSub_DollarName subcmd))}
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                      redirects: []
                      do_fork: T
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                    (command.Sentence
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                        (command.Simple
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                          redirects: []
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                    (command.ShAssignment
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                      pairs: [
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                              (ShArrayLiteral
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                                words: [
                                  {
                                    (DQ 
                                      (BracedVarSub
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                                        var_name: _Dbg_debugger_show_commands
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                                right: <Id.Right_ShArrayLiteral _>
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                      redirects: []
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                    (command.Simple
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                      more_env: []
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                        {<0>}
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                          (BracedVarSub
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                            prefix_op: <Id.VSub_Pound '#'>
                            bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                            right: <Id.Right_DollarBrace '}'>
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                        }
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <typeset>
                      more_env: []
                      words: [{<typeset>} {<Id.Lit_VarLike 'columnized='> (SQ )}]
                      redirects: []
                      do_fork: T
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                    (command.Sentence
                      child: 
                        (command.Simple
                          blame_tok: <typeset>
                          more_env: []
                          words: [{<typeset>} {<-i>} {<width>}]
                          redirects: []
                          do_fork: T
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                      terminator: <Id.Op_Semi _>
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                    (command.DParen
                      left: <Id.Op_DLeftParen _>
                      child: 
                        (arith_expr.BinaryAssign
                          op_id: Id.Arith_Equal
                          left: ($ Id.Lit_ArithVarLike width)
                          right: 
                            (arith_expr.Binary
                              op_id: Id.Arith_Minus
                              left: ($ Id.Lit_ArithVarLike _Dbg_set_linewidth)
                              right: {<Id.Lit_Digits 5>}
                            )
                        )
                      right: <Id.Op_DRightParen _>
                      redirects: []
                    )
                    (command.Sentence
                      child: 
                        (command.Simple
                          blame_tok: <typeset>
                          more_env: []
                          words: [{<typeset>} {<-a>} {<columnized>}]
                          redirects: []
                          do_fork: T
                        )
                      terminator: <Id.Op_Semi _>
                    )
                    (command.Simple
                      blame_tok: <columnize>
                      more_env: []
                      words: [{<columnize>} {($ Id.VSub_DollarName width)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <typeset>
                      more_env: []
                      words: [{<typeset>} {<-i>} {<i>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <_Dbg_errmsg>
                      more_env: []
                      words: [{<_Dbg_errmsg>} {(DQ <'Show subcommands are:'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ForExpr
                      keyword: <Id.KW_For for>
                      init: 
                        (arith_expr.BinaryAssign
                          op_id: Id.Arith_Equal
                          left: ($ Id.Lit_ArithVarLike i)
                          right: {<Id.Lit_Digits 0>}
                        )
                      cond: 
                        (arith_expr.Binary
                          op_id: Id.Arith_Less
                          left: ($ Id.Lit_ArithVarLike i)
                          right: 
                            {
                              (BracedVarSub
                                left: <Id.Left_DollarBrace '${'>
                                token: <Id.VSub_Name columnized>
                                var_name: columnized
                                prefix_op: <Id.VSub_Pound '#'>
                                bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                                right: <Id.Right_DollarBrace '}'>
                              )
                            }
                        )
                      update: 
                        (arith_expr.UnaryAssign
                          op_id: Id.Node_PostDPlus
                          child: ($ Id.Lit_ArithVarLike i)
                        )
                      body: 
                        (command.DoGroup
                          left: <Id.KW_Do do>
                          children: [
                            (command.Simple
                              blame_tok: <_Dbg_errmsg>
                              more_env: []
                              words: [
                                {<_Dbg_errmsg>}
                                {
                                  (DQ <'  '> 
                                    (BracedVarSub
                                      left: <Id.Left_DollarBrace '${'>
                                      token: <Id.VSub_Name columnized>
                                      var_name: columnized
                                      bracket_op: 
                                        (bracket_op.ArrayIndex
                                          expr: ($ Id.Lit_ArithVarLike i)
                                        )
                                      right: <Id.Right_DollarBrace '}'>
                                    )
                                  )
                                }
                              ]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          right: <Id.KW_Done done>
                        )
                      redirects: []
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
            (command.ControlFlow
              keyword: <Id.ControlFlow_Return return>
              arg_word: {($ Id.VSub_QMark '?')}
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
  ]
)