(command.CommandList
  children: [
    (C {(_Dbg_help_add)} {(source)} 
      {
        (SQ (Token id:Id.Lit_Chars val:'**source** *file*\n' span_id:77) 
          (Token id:Id.Lit_Chars val:'\n' span_id:78) (Token id:Id.Lit_Chars val:'Run debugger commands in *file*.' span_id:79)
        )
      }
    )
    (command.ShFunction
      name: _Dbg_do_source
      body: 
        (command.BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DParen
                          child: 
                            (arith_expr.Binary
                              op_id: Id.Arith_DEqual
                              left: (arith_expr.ArithWord w:{($ Id.VSub_Pound '$#')})
                              right: (arith_expr.ArithWord w:{(Id.Lit_Digits 0)})
                            )
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:103)
                    )
                  ]
                  action: [
                    (C {(_Dbg_errmsg)} 
                      {
                        (SQ 
                          (Token
                            id: Id.Lit_Chars
                            val: 'Need to give a filename for the "source" command.'
                            span_id: 111
                          )
                        )
                      }
                    )
                    (command.ControlFlow
                      token: (Token id:Id.ControlFlow_Return val:return span_id:115)
                      arg_word: {(1)}
                    )
                  ]
                  spids: [90 105]
                )
              ]
            )
            (C {(typeset)} {(filename)})
            (C {(_Dbg_tilde_expand_filename)} {(DQ ($ Id.VSub_Number '$1'))})
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.AndOr
                          ops: [Id.Op_DPipe]
                          children: [
                            (command.DBracket
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_r
                                  child: {($ Id.VSub_DollarName '$filename')}
                                )
                            )
                            (command.DBracket
                              expr: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: {(DQ ($ Id.VSub_DollarName '$filename'))}
                                  right: {(SQ (Token id:Id.Lit_Chars val:/dev/stdin span_id:157))}
                                )
                            )
                          ]
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:162)
                    )
                  ]
                  action: [
                    (command.Simple
                      words: [{(exec)} {(Id.Lit_LBrace '{') (_Dbg_fdi) (Id.Lit_RBrace '}')}]
                      redirects: [
                        (redir.Redir
                          op: (Token id:Id.Redir_Less val:'<' span_id:176)
                          fd: -1
                          arg_word: {(DQ ($ Id.VSub_DollarName '$filename'))}
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: 
                            (sh_lhs_expr.IndexedName
                              name: _Dbg_fd
                              index: 
                                (arith_expr.UnaryAssign
                                  op_id: Id.Arith_DPlus
                                  child: (sh_lhs_expr.Name name:_Dbg_fd_last)
                                )
                            )
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_DollarName '$_Dbg_fdi')}
                          spids: [182]
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:_Dbg_cmdfile)
                          op: assign_op.PlusEqual
                          rhs: 
                            {
                              (sh_array_literal
                                left: (Token id:Id.Op_LParen val:'(' span_id:198)
                                words: [{(DQ ($ Id.VSub_DollarName '$filename'))}]
                              )
                            }
                          spids: [197]
                        )
                      ]
                    )
                  ]
                  spids: [136 164]
                )
              ]
              else_action: [
                (C {(_Dbg_errmsg)} 
                  {
                    (DQ ('Source file ') 
                      (word_part.EscapedLiteral
                        token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:212)
                      ) ($ Id.VSub_DollarName '$filename') 
                      (word_part.EscapedLiteral
                        token: (Token id:Id.Lit_EscapedChar val:'\\"' span_id:214)
                      ) (' is not readable.')
                    )
                  }
                )
                (command.ControlFlow
                  token: (Token id:Id.ControlFlow_Return val:return span_id:219)
                  arg_word: {(3)}
                )
              ]
            )
            (command.ControlFlow
              token: (Token id:Id.ControlFlow_Return val:return span_id:227)
              arg_word: {(0)}
            )
          ]
        )
    )
  ]
)