(CommandList
  children: [
    (C {(_Dbg_help_add)} {(edit)} 
      {
        (DQ ('**edit** [*line-number*]\n') ('\n') ('Edit specified file at *line-number*.\n') ('\n') 
          ('If *line-number* is not given, use the current line number.\n') ('Uses ') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) (EDITOR) 
          (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) (' environment variable contents as editor (or ex as default).\n') 
          ('Assumes the editor positions at a file using options ') (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ('+linenumber filename') 
          (EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) (.)
        )
      }
    )
    (FuncDef
      name: _Dbg_do_edit
      body: 
        (BraceGroup
          children: [
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DParen
                          child: 
                            (ArithBinary
                              op_id: Arith_Great
                              left: (ArithWord w:{($ VSub_Pound '$#')})
                              right: (ArithWord w:{(Lit_Digits 2)})
                            )
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (C {(_Dbg_errmsg)} 
                      {(DQ ('got ') ($ VSub_Pound '$#') (' parameters, but need 0 or 1.'))}
                    )
                    (ControlFlow token:<ControlFlow_Return return> arg_word:{(2)})
                  ]
                  spids: [16777215 104]
                )
              ]
              spids: [16777215 121]
            )
            (Assignment
              keyword: Assign_Typeset
              pairs: [
                (assign_pair
                  lhs: (LhsName name:editor)
                  op: Equal
                  rhs: 
                    {
                      (BracedVarSub
                        token: <VSub_Name EDITOR>
                        suffix_op: (StringUnary op_id:VTest_ColonHyphen arg_word:{(ex)})
                        spids: [127 131]
                      )
                    }
                  spids: [126]
                )
              ]
              spids: [124]
            )
            (Assignment
              keyword: Assign_Typeset
              flags: [-i]
              pairs: [(assign_pair lhs:(LhsName name:line_number) op:Equal spids:[138])]
              spids: [134]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DParen
                          child: 
                            (ArithBinary
                              op_id: Arith_DEqual
                              left: (ArithWord w:{($ VSub_Pound '$#')})
                              right: (ArithWord w:{(Lit_Digits 0)})
                            )
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:line_number)
                          op: Equal
                          rhs: {($ VSub_Name '$_Dbg_frame_last_lineno')}
                          spids: [159]
                        )
                      ]
                      spids: [159]
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:full_filename)
                          op: Equal
                          rhs: {(DQ ($ VSub_Name '$_Dbg_frame_last_filename'))}
                          spids: [163]
                        )
                      ]
                      spids: [163]
                    )
                  ]
                  spids: [16777215 156]
                )
              ]
              else_action: [(C {(_Dbg_linespec_setup)} {(DQ ($ VSub_Number '$1'))})]
              spids: [169 179]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DBracket
                          expr: 
                            (LogicalNot
                              child: 
                                (BoolUnary
                                  op_id: BoolUnary_r
                                  child: {($ VSub_Name '$full_filename')}
                                )
                            )
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (C {(_Dbg_errmsg)} 
                      {(DQ ('File ') ($ VSub_Name '$full_filename') (' is not readable'))}
                    )
                    (ControlFlow token:<ControlFlow_Return return> arg_word:{(2)})
                  ]
                  spids: [16777215 196]
                )
              ]
              spids: [16777215 213]
            )
            (C {($ VSub_Name '$editor')} {(Lit_Other '+') ($ VSub_Name '$line_number')} 
              {($ VSub_Name '$full_filename')}
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:rc)
                  op: Equal
                  rhs: {($ VSub_QMark '$?')}
                  spids: [224]
                )
              ]
              spids: [224]
            )
            (AndOr
              children: [
                (DParen
                  child: 
                    (ArithBinary
                      op_id: Arith_DEqual
                      left: (ArithVarRef name:rc)
                      right: (ArithWord w:{(Lit_Digits 0)})
                    )
                )
                (Assignment
                  keyword: Assign_None
                  pairs: [
                    (assign_pair
                      lhs: (LhsName name:_Dbg_last_cmd)
                      op: Equal
                      rhs: {(SQ <edit>)}
                      spids: [237]
                    )
                  ]
                  spids: [237]
                )
              ]
              op_id: Op_DAmp
            )
            (ControlFlow token:<ControlFlow_Return return> arg_word:{($ VSub_Name '$rc')})
          ]
          spids: [88]
        )
      spids: [84 87]
    )
    (C {(_Dbg_alias_add)} {(SQ <ed>)} {(SQ <edit>)})
  ]
)