(command.CommandList
  children: [
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-i>} {<Id.Lit_VarLike '_Dbg_set_different='> <0>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <_Dbg_help_add>
      more_env: []
      words: [
        {<_Dbg_help_add>}
        {<step>}
        {
          (DQ <'step [COUNT]\n'> <'\n'> 
            <'Single step an statement. This is sometimes called \'step into\'.\n'> <'\n'> <'\n'> <'If COUNT is given, stepping occurs that many times before\n'> 
            <'stopping. Otherwise COUNT is one. COUNT an be an arithmetic\n'> <'expression.\n'> <'\n'> <'In contrast to '> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <next> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') 
            <', functions and source\'d files are stepped\n'> <'into. See also '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <skip> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <.>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <_Dbg_help_add>
      more_env: []
      words: [
        {<_Dbg_help_add>}
        {(SQ <'step+'>)}
        {
          (DQ <'step+ -- Single step a statement ensuring a different line after the step.\n'> <'\n'> 
            <'In contrast to '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <step> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <', we ensure that the file and line position is\n'> 
            <'different from the last one just stopped at.\n'> <'\n'> <'See also '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <step-> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <' and '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <'set force'> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <.>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <_Dbg_help_add>
      more_env: []
      words: [
        {<_Dbg_help_add>}
        {(SQ <step->)}
        {
          (DQ <'step- -- Single step a statement without the '> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\`'> ch:'`') <'step force\' setting.\n'> <'\n'> 
            <'Set step force may have been set on. step- ensures we turn that off for\n'> <'this command.\n'> <'\n'> <'See also '> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <step> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <' and '> 
            (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <'set force'> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <.>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <_Dbg_do_step>
      name: _Dbg_do_step
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.AndOr
              children: [
                (command.Simple
                  blame_tok: <_Dbg_not_running>
                  more_env: []
                  words: [{<_Dbg_not_running>}]
                  redirects: []
                  do_fork: T
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<3>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_last_cmd='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_last_cmd='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_Dbg_last_cmd='> name:_Dbg_last_cmd)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_DollarName _Dbg_cmd))}
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_last_next_step_cmd='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_last_next_step_cmd='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_last_next_step_cmd='>
                      name: _Dbg_last_next_step_cmd
                    )
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_DollarName _Dbg_cmd))}
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_last_next_step_args='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_last_next_step_args='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_last_next_step_args='>
                      name: _Dbg_last_next_step_args
                    )
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_At '@'))}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [
                {<typeset>}
                {<Id.Lit_VarLike 'count='> 
                  (BracedVarSub
                    left: <Id.Left_DollarBrace '${'>
                    token: <Id.VSub_Number 1>
                    var_name: 1
                    suffix_op: (suffix_op.Unary op:<Id.VTest_ColonHyphen _> arg_word:{<1>})
                    right: <Id.Right_DollarBrace '}'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<suffix>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'suffix='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'suffix='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'suffix='> name:suffix)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (BracedVarSub
                        left: <Id.Left_DollarBrace '${'>
                        token: <Id.VSub_Name _Dbg_last_next_step_cmd>
                        var_name: _Dbg_last_next_step_cmd
                        suffix_op: 
                          (suffix_op.Slice
                            begin: 
                              (arith_expr.Binary
                                op_id: Id.Arith_Minus
                                left: 
                                  {
                                    (BracedVarSub
                                      left: <Id.Left_DollarBrace '${'>
                                      token: <Id.VSub_Name _Dbg_last_step_next_cmd>
                                      var_name: _Dbg_last_step_next_cmd
                                      prefix_op: <Id.VSub_Pound '#'>
                                      right: <Id.Right_DollarBrace '}'>
                                    )
                                  }
                                right: {<Id.Lit_Digits 1>}
                              )
                            length: {<Id.Lit_Digits 1>}
                          )
                        right: <Id.Arith_RBrace _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.Case
              case_kw: <Id.KW_Case case>
              to_match: (case_arg.Word w:{(DQ <suffix>)})
              arms_start: <Id.KW_In in>
              arms: [
                (CaseArm
                  left: <Id.Left_SingleQuote '\''>
                  pattern: (pat.Words words:[{(SQ <'+'>)}])
                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike '_Dbg_step_force='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike '_Dbg_step_force='>
                          lhs: 
                            (sh_lhs_expr.Name
                              left: <Id.Lit_VarLike '_Dbg_step_force='>
                              name: _Dbg_step_force
                            )
                          op: assign_op.Equal
                          rhs: {<1>}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  right: <Id.Op_DSemi _>
                )
                (CaseArm
                  left: <Id.Left_SingleQuote '\''>
                  pattern: (pat.Words words:[{(SQ <->)}])
                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike '_Dbg_step_force='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike '_Dbg_step_force='>
                          lhs: 
                            (sh_lhs_expr.Name
                              left: <Id.Lit_VarLike '_Dbg_step_force='>
                              name: _Dbg_step_force
                            )
                          op: assign_op.Equal
                          rhs: {<0>}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  right: <Id.Op_DSemi _>
                )
                (CaseArm
                  left: <Id.Lit_Star '*'>
                  pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike '_Dbg_step_force='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike '_Dbg_step_force='>
                          lhs: 
                            (sh_lhs_expr.Name
                              left: <Id.Lit_VarLike '_Dbg_step_force='>
                              name: _Dbg_step_force
                            )
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_DollarName _Dbg_set_different)}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  right: <Id.Op_DSemi _>
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              left: <Id.KW_DLeftBracket '[['>
                              expr: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: {($ Id.VSub_DollarName count)}
                                  right: 
                                    {<Id.Lit_Other '['> <0-9> <Id.Lit_Other ']'> <Id.Lit_Other '*'>}
                                )
                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                          lhs: 
                            (sh_lhs_expr.Name
                              left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                              name: _Dbg_step_ignore
                            )
                          op: assign_op.Equal
                          rhs: 
                            {
                              (BracedVarSub
                                left: <Id.Left_DollarBrace '${'>
                                token: <Id.VSub_Name count>
                                var_name: count
                                suffix_op: (suffix_op.Unary op:<Id.VTest_ColonHyphen _> arg_word:{<1>})
                                right: <Id.Right_DollarBrace '}'>
                              )
                            }
                        )
                      ]
                      redirects: []
                    )
                  ]
                  spids: [284 301]
                )
              ]
              else_kw: <Id.KW_Else else>
              else_action: [
                (command.Simple
                  blame_tok: <_Dbg_errmsg>
                  more_env: []
                  words: [
                    {<_Dbg_errmsg>}
                    {
                      (DQ <'Argument ('> ($ Id.VSub_DollarName count) 
                        <') should be a number or nothing.'>
                      )
                    }
                  ]
                  redirects: []
                  do_fork: T
                )
                (command.ShAssignment
                  left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                  pairs: [
                    (AssignPair
                      left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                      lhs: 
                        (sh_lhs_expr.Name
                          left: <Id.Lit_VarLike '_Dbg_step_ignore='>
                          name: _Dbg_step_ignore
                        )
                      op: assign_op.Equal
                      rhs: {<-1>}
                    )
                  ]
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_old_set_opts='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_old_set_opts='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_old_set_opts='>
                      name: _Dbg_old_set_opts
                    )
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_DollarName _Dbg_old_set_opts) <' -o functrace'>)}
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <_Dbg_write_journal>
              more_env: []
              words: [
                {<_Dbg_write_journal>}
                {(DQ <'_Dbg_step_ignore='> ($ Id.VSub_DollarName _Dbg_step_ignore))}
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_write_journal>
              more_env: []
              words: [
                {<_Dbg_write_journal>}
                {(DQ <'_Dbg_step_force='> ($ Id.VSub_DollarName _Dbg_step_force))}
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_write_journal>
              more_env: []
              words: [
                {<_Dbg_write_journal>}
                {(DQ <'_Dbg_old_set_opts=\''> ($ Id.VSub_DollarName _Dbg_old_set_opts) <'\''>)}
              ]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_inside_skip='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_inside_skip='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_inside_skip='>
                      name: _Dbg_inside_skip
                    )
                  op: assign_op.Equal
                  rhs: {<0>}
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_continue_rc='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_continue_rc='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_continue_rc='>
                      name: _Dbg_continue_rc
                    )
                  op: assign_op.Equal
                  rhs: {<0>}
                )
              ]
              redirects: []
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Simple
      blame_tok: <_Dbg_alias_add>
      more_env: []
      words: [{<_Dbg_alias_add>} {(SQ <s>)} {(SQ <step>)}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <_Dbg_alias_add>
      more_env: []
      words: [{<_Dbg_alias_add>} {(SQ <'s+'>)} {(SQ <'step+'>)}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <_Dbg_alias_add>
      more_env: []
      words: [{<_Dbg_alias_add>} {(SQ <s->)} {(SQ <step->)}]
      redirects: []
      do_fork: T
    )
  ]
)