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      more_env: []
      words: [{<.>} {($ Id.VSub_DollarName _Dbg_main)}]
      redirects: []
      do_fork: T
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          child: 
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          right: <Id.Op_DRightParen _>
          redirects: []
        )
        (command.Simple
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          more_env: []
          words: [
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                      op_id: Id.Arith_Minus
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              )
            }
          ]
          redirects: []
          do_fork: T
        )
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          cond: 
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                          child: 
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                        )
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                )
              ]
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          action: [
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              more_env: []
              words: [
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                  (DQ (${ Id.VSub_Name _Dbg_pname) 
                    <': need to give a script to debug or use the -c option.'>
                  )
                }
              ]
              redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              do_fork: T
            )
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          spids: [113 136]
        )
      ]
      else_action: []
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      redirects: []
    )
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      redirects: []
    )
    (command.Simple blame_tok:<shift> more_env:[] words:[{<shift>}] redirects:[] do_fork:T)
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          expr: 
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              left: {($ Id.VSub_Number 1)}
              right: {(SQ <-->)}
            )
          right: <Id.Lit_DRightBracket ']]'>
          redirects: []
        )
        (command.Simple
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          more_env: []
          words: [{<shift>}]
          redirects: []
          do_fork: T
        )
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    (command.If
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                          expr: 
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                          redirects: []
                        )
                        (command.DBracket
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                          expr: 
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                        )
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                      ops: [<Id.Op_DAmp _>]
                    )
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                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
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              more_env: []
              words: [
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                {
                  (DQ (${ Id.VSub_Name _Dbg_pname) <': cannot write to temp directory '> 
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                }
              ]
              redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              do_fork: T
            )
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {(DQ (${ Id.VSub_Name _Dbg_pname) <': Use -T try directory location.'>)}]
              redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              do_fork: T
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
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          spids: [184 210]
        )
      ]
      else_action: []
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      redirects: []
    )
    (command.ShAssignment
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      redirects: []
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      arms: [
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          cond: 
            (condition.Shell
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                      redirects: []
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
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              pairs: [
                (AssignPair
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                  lhs: 
                    (sh_lhs_expr.Name
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                    )
                  op: assign_op.Equal
                  rhs: 
                    {
                      (CommandSub
                        left_token: <Id.Left_DollarParen '$('>
                        child: 
                          (command.Simple
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                            more_env: []
                            words: [{<_Dbg_tempname>} {<cmd>}]
                            redirects: []
                            do_fork: T
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                )
              ]
              redirects: []
            )
            (command.Simple
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              more_env: []
              words: [{<echo>} {(DQ ($ Id.VSub_DollarName _Dbg_EXECUTION_STRING))}]
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              ]
              do_fork: T
            )
          ]
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        )
      ]
      else_action: []
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      redirects: []
    )
    (command.If
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          cond: 
            (condition.Shell
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              more_env: []
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        )
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      else_action: []
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.Simple
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      more_env: []
      words: [
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        {<-r>}
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          (CommandSub
            left_token: <Id.Left_DollarParen '$('>
            child: 
              (command.Simple
                blame_tok: <_Dbg_expand_filename>
                more_env: []
                words: [{<_Dbg_expand_filename>} {($ Id.VSub_DollarName _Dbg_script_file)}]
                redirects: []
                do_fork: T
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      redirects: []
      do_fork: T
    )
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          cond: 
            (condition.Shell
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            )
          then_kw: <Id.KW_Then then>
          action: [
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              more_env: []
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              do_fork: T
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          do_fork: T
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      redirects: []
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            (condition.Shell
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                      do_fork: T
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          then_kw: <Id.KW_Then then>
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      redirects: []
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          redirects: []
        )
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          more_env: []
          words: [{<_Dbg_complete_level_0_init>}]
          redirects: []
          do_fork: T
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    )
    (command.Simple
      blame_tok: <_Dbg_init_default_traps>
      more_env: []
      words: [{<_Dbg_init_default_traps>}]
      redirects: []
      do_fork: T
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)