(command.CommandList
  children: [
    (command.Simple
      blame_tok: <_Dbg_help_add>
      more_env: []
      words: [
        {<_Dbg_help_add>}
        {<file>}
        {(DQ <'file FILENAME\n'> <'\n'> <'Set FILENAME as the current source file.'>)}
      ]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <_Dbg_do_file>
      name: _Dbg_do_file
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<filename>}]
              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.DParen
                              left: <Id.Op_DLeftParen _>
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_Less
                                  left: {($ Id.VSub_Pound '#')}
                                  right: {<Id.Lit_Digits 1>}
                                )
                              right: <Id.Op_DRightParen _>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <_Dbg_errmsg>
                      more_env: []
                      words: [{<_Dbg_errmsg>} {(DQ <'Need to give a filename for the file command'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [86 101]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Simple
              blame_tok: <_Dbg_tilde_expand_filename>
              more_env: []
              words: [{<_Dbg_tilde_expand_filename>} {(DQ ($ Id.VSub_Number 1))}]
              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.AndOr
                              children: [
                                (command.DBracket
                                  left: <Id.KW_DLeftBracket '[['>
                                  expr: 
                                    (bool_expr.LogicalNot
                                      child: 
                                        (bool_expr.Unary
                                          op_id: Id.BoolUnary_f
                                          child: {(DQ ($ Id.VSub_DollarName filename))}
                                        )
                                    )
                                  right: <Id.Lit_DRightBracket ']]'>
                                  redirects: []
                                )
                                (command.DBracket
                                  left: <Id.KW_DLeftBracket '[['>
                                  expr: 
                                    (bool_expr.LogicalNot
                                      child: 
                                        (bool_expr.Unary
                                          op_id: Id.BoolUnary_x
                                          child: {(DQ ($ Id.VSub_DollarName filename))}
                                        )
                                    )
                                  right: <Id.Lit_DRightBracket ']]'>
                                  redirects: []
                                )
                              ]
                              ops: [<Id.Op_DAmp _>]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <_Dbg_errmsg>
                      more_env: []
                      words: [
                        {<_Dbg_errmsg>}
                        {
                          (DQ <'Source file '> ($ Id.VSub_DollarName filename) 
                            <' does not exist as a readable regular file.'>
                          )
                        }
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [126 156]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [
                {<typeset>}
                {<Id.Lit_VarLike 'filevar='> 
                  (CommandSub
                    left_token: <Id.Left_DollarParen '$('>
                    child: 
                      (command.Simple
                        blame_tok: <_Dbg_file2var>
                        more_env: []
                        words: [
                          {<_Dbg_file2var>}
                          {
                            (BracedVarSub
                              left: <Id.Left_DollarBrace '${'>
                              token: <Id.VSub_Name BASH_SOURCE>
                              var_name: BASH_SOURCE
                              bracket_op: (bracket_op.ArrayIndex expr:{<Id.Lit_Digits 3>})
                              right: <Id.Right_DollarBrace '}'>
                            )
                          }
                        ]
                        redirects: []
                        do_fork: T
                      )
                    right: <Id.Eof_RParen _>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_set_assoc_scalar_entry>
              more_env: []
              words: [
                {<_Dbg_set_assoc_scalar_entry>}
                {(DQ <_Dbg_file_cmd_>)}
                {($ Id.VSub_DollarName filevar)}
                {(DQ ($ Id.VSub_DollarName filename))}
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<source_file>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'source_file='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'source_file='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'source_file='> name:source_file)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (CommandSub
                        left_token: <Id.Left_DollarParen '$('>
                        child: 
                          (command.Simple
                            blame_tok: <_Dbg_file_canonic>
                            more_env: []
                            words: [
                              {<_Dbg_file_canonic>}
                              {
                                (DQ 
                                  (BracedVarSub
                                    left: <Id.Left_DollarBrace '${'>
                                    token: <Id.VSub_Name BASH_SOURCE>
                                    var_name: BASH_SOURCE
                                    bracket_op: (bracket_op.ArrayIndex expr:{<Id.Lit_Digits 3>})
                                    right: <Id.Right_DollarBrace '}'>
                                  )
                                )
                              }
                            ]
                            redirects: []
                            do_fork: T
                          )
                        right: <Id.Eof_RParen _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <_Dbg_msg>
              more_env: []
              words: [
                {<_Dbg_msg>}
                {
                  (DQ <'File '> ($ Id.VSub_DollarName filename) <' will be used when '> 
                    ($ Id.VSub_DollarName source_file) <' is referenced.'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
  ]
)