(command.CommandList
  children: [
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<Id.Lit_VarLike '_Dbg_bogus_file='> (SQ <' A really bogus file'>)}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_file2canonic>}]
      redirects: []
      do_fork: T
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike '_Dbg_file2canonic='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike '_Dbg_file2canonic='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_Dbg_file2canonic='> name:_Dbg_file2canonic)
          op: assign_op.Equal
          rhs: {(ShArrayLiteral left:<Id.Op_LParen _> words:[] right:<Id.Right_ShArrayLiteral _>)}
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_fileinfo>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <typeset>
      more_env: []
      words: [{<typeset>} {<-A>} {<_Dbg_filenames>}]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <_Dbg_filecache_reset>
      name: _Dbg_filecache_reset
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_filenames='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_filenames='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_Dbg_filenames='> name:_Dbg_filenames)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (ShArrayLiteral
                        left: <Id.Op_LParen _>
                        words: []
                        right: <Id.Right_ShArrayLiteral _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_fileinfo='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_fileinfo='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike '_Dbg_fileinfo='> name:_Dbg_fileinfo)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (ShArrayLiteral
                        left: <Id.Op_LParen _>
                        words: []
                        right: <Id.Right_ShArrayLiteral _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_file2canonic='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_file2canonic='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_file2canonic='>
                      name: _Dbg_file2canonic
                    )
                  op: assign_op.Equal
                  rhs: 
                    {
                      (ShArrayLiteral
                        left: <Id.Op_LParen _>
                        words: []
                        right: <Id.Right_ShArrayLiteral _>
                      )
                    }
                )
              ]
              redirects: []
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Simple
      blame_tok: <_Dbg_filecache_reset>
      more_env: []
      words: [{<_Dbg_filecache_reset>}]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <_Dbg_check_line>
      name: _Dbg_check_line
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.AndOr
              children: [
                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 2>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<1>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<-i>} {<Id.Lit_VarLike 'line_number='> ($ Id.VSub_Number 1)}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number 2))}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<-i>} {<max_line>}]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'max_line='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'max_line='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'max_line='> name:max_line)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (CommandSub
                        left_token: <Id.Left_DollarParen '$('>
                        child: 
                          (command.Simple
                            blame_tok: <_Dbg_get_maxline>
                            more_env: []
                            words: [{<_Dbg_get_maxline>} {(DQ ($ Id.VSub_DollarName filename))}]
                            redirects: []
                            do_fork: T
                          )
                        right: <Id.Eof_RParen _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (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_NEqual
                                  left: {($ Id.VSub_QMark '?')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                              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 <'internal error getting number of lines in '> 
                            ($ Id.VSub_DollarName filename)
                          )
                        }
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [193 208]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (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_Great
                                  left: ($ Id.Lit_ArithVarLike line_number)
                                  right: ($ Id.Lit_ArithVarLike max_line)
                                )
                              right: <Id.Op_DRightParen _>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.AndOr
                      children: [
                        (command.DParen
                          left: <Id.Op_DLeftParen _>
                          child: ($ Id.Lit_ArithVarLike _Dbg_set_basename)
                          right: <Id.Op_DRightParen _>
                          redirects: []
                        )
                        (command.ShAssignment
                          left: <Id.Lit_VarLike 'filename='>
                          pairs: [
                            (AssignPair
                              left: <Id.Lit_VarLike 'filename='>
                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'filename='> name:filename)
                              op: assign_op.Equal
                              rhs: 
                                {
                                  (BracedVarSub
                                    left: <Id.Left_DollarBrace '${'>
                                    token: <Id.VSub_Name filename>
                                    var_name: filename
                                    suffix_op: 
                                      (suffix_op.Unary
                                        op: <Id.VOp1_DPound '##'>
                                        arg_word: {<Id.Lit_Other '*'> <Id.Lit_Slash '/'>}
                                      )
                                    right: <Id.Right_DollarBrace '}'>
                                  )
                                }
                            )
                          ]
                          redirects: []
                        )
                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.Simple
                      blame_tok: <_Dbg_errmsg>
                      more_env: []
                      words: [
                        {<_Dbg_errmsg>}
                        {(DQ <'Line '> ($ Id.VSub_DollarName line_number) <' is too large.'>)}
                        {
                          (DQ <'File '> ($ Id.VSub_DollarName filename) <' has only '> 
                            ($ Id.VSub_DollarName max_line) <' lines.'>
                          )
                        }
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow
                      keyword: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [228 243]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      keyword: <Id.KW_Function function>
      name_tok: <_Dbg_file_not_read_in>
      name: _Dbg_file_not_read_in
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [
                {<typeset>}
                {<-r>}
                {<Id.Lit_VarLike 'filename='> 
                  (CommandSub
                    left_token: <Id.Left_DollarParen '$('>
                    child: 
                      (command.Simple
                        blame_tok: <_Dbg_adjust_filename>
                        more_env: []
                        words: [{<_Dbg_adjust_filename>} {(DQ ($ Id.VSub_Number 1))}]
                        redirects: []
                        do_fork: T
                      )
                    right: <Id.Eof_RParen _>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_errmsg>
              more_env: []
              words: [
                {<_Dbg_errmsg>}
                {
                  (DQ <'File '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') 
                    ($ Id.VSub_DollarName filename) (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'> ch:'"') <' not found in read-in files.'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_errmsg>
              more_env: []
              words: [{<_Dbg_errmsg>} {(DQ <'See \'info files\' for a list of known files and'>)}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_errmsg>
              more_env: []
              words: [{<_Dbg_errmsg>} {(DQ <'\'load\' to read in a file.'>)}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      keyword: <Id.KW_Function function>
      name_tok: <_Dbg_get_maxline>
      name: _Dbg_get_maxline
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.AndOr
              children: [
                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<-1>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.AndOr
              children: [
                (command.Simple
                  blame_tok: <_Dbg_set_source_array_var>
                  more_env: []
                  words: [{<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_Number 1))}]
                  redirects: []
                  do_fork: T
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {($ Id.VSub_QMark '?')}
                )
              ]
              ops: [<Id.Op_DPipe _>]
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [
                {<typeset>}
                {<-r>}
                {<Id.Lit_VarLike 'line_count_cmd='> 
                  (DQ <'line_count='> 
                    (word_part.EscapedLiteral
                      token: <Id.Lit_EscapedChar '\\$'>
                      ch: '$'
                    ) <'{#'> ($ Id.VSub_DollarName _Dbg_source_array_var) <'[@]}'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <eval>
              more_env: []
              words: [{<eval>} {($ Id.VSub_DollarName line_count_cmd)}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <eval>
              more_env: []
              words: [
                {<eval>}
                {
                  (DQ <'typeset last_line; last_line='> 
                    (word_part.EscapedLiteral
                      token: <Id.Lit_EscapedChar '\\$'>
                      ch: '$'
                    ) <'{'> (${ Id.VSub_Name _Dbg_source_array_var) <'['> ($ Id.VSub_DollarName line_count) <']}'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<-i>} {<Id.Lit_VarLike 'last_not_null='> <0>}]
              redirects: []
              do_fork: T
            )
            (command.DParen
              left: <Id.Op_DLeftParen _>
              child: 
                (arith_expr.BinaryAssign
                  op_id: Id.Arith_Equal
                  left: ($ Id.Lit_ArithVarLike line_count)
                  right: 
                    (arith_expr.Binary
                      op_id: Id.Arith_Minus
                      left: ($ Id.Lit_ArithVarLike line_count)
                      right: ($ Id.Lit_ArithVarLike last_line_is_null)
                    )
                )
              right: <Id.Op_DRightParen _>
              redirects: []
            )
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {($ Id.VSub_DollarName line_count)}]
              redirects: []
              do_fork: T
            )
            (command.ControlFlow
              keyword: <Id.ControlFlow_Return return>
              arg_word: {($ Id.VSub_QMark '?')}
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <_Dbg_get_source_line>
      name: _Dbg_get_source_line
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<-i>} {<lineno>}]
              redirects: []
              do_fork: T
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
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                          child: 
                            (command.DParen
                              left: <Id.Op_DLeftParen _>
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_DEqual
                                  left: {($ Id.VSub_Pound '#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                              right: <Id.Op_DRightParen _>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike 'lineno='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike 'lineno='>
                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'lineno='> name:lineno)
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_DollarName _Dbg_frame_last_lineno)}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  spids: [500 514]
                )
              ]
              else_kw: <Id.KW_Else else>
              else_action: [
                (command.ShAssignment
                  left: <Id.Lit_VarLike 'lineno='>
                  pairs: [
                    (AssignPair
                      left: <Id.Lit_VarLike 'lineno='>
                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'lineno='> name:lineno)
                      op: assign_op.Equal
                      rhs: {($ Id.VSub_Number 1)}
                    )
                  ]
                  redirects: []
                )
                (command.Simple
                  blame_tok: <shift>
                  more_env: []
                  words: [{<shift>}]
                  redirects: []
                  do_fork: T
                )
              ]
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (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_DEqual
                                  left: {($ Id.VSub_Pound '#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                              right: <Id.Op_DRightParen _>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike 'filename='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike 'filename='>
                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'filename='> name:filename)
                          op: assign_op.Equal
                          rhs: {(DQ ($ Id.VSub_DollarName _Dbg_frame_last_filename))}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  spids: [539 554]
                )
              ]
              else_kw: <Id.KW_Else else>
              else_action: [
                (command.ShAssignment
                  left: <Id.Lit_VarLike 'filename='>
                  pairs: [
                    (AssignPair
                      left: <Id.Lit_VarLike 'filename='>
                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'filename='> name:filename)
                      op: assign_op.Equal
                      rhs: {(DQ ($ Id.VSub_Number 1))}
                    )
                  ]
                  redirects: []
                )
              ]
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Simple
              blame_tok: <_Dbg_readin_if_new>
              more_env: []
              words: [{<_Dbg_readin_if_new>} {(DQ ($ Id.VSub_DollarName 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.AndOr
                              children: [
                                (command.DBracket
                                  left: <Id.KW_DLeftBracket '[['>
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_n
                                      child: {($ Id.VSub_DollarName _Dbg_set_highlight)}
                                    )
                                  right: <Id.Lit_DRightBracket ']]'>
                                  redirects: []
                                )
                                (command.DBracket
                                  left: <Id.KW_DLeftBracket '[['>
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_n
                                      child: {($ Id.VSub_DollarName _Dbg_highlight_array_var)}
                                    )
                                  right: <Id.Lit_DRightBracket ']]'>
                                  redirects: []
                                )
                              ]
                              ops: [<Id.Op_DAmp _>]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <eval>
                      more_env: []
                      words: [
                        {<eval>}
                        {
                          (DQ <'typeset -i count='> 
                            (word_part.EscapedLiteral
                              token: <Id.Lit_EscapedChar '\\$'>
                              ch: '$'
                            ) <'{#'> ($ Id.VSub_DollarName _Dbg_highlight_array_var) <'[@]}'>
                          )
                        }
                      ]
                      redirects: []
                      do_fork: T
                    )
                    (command.If
                      if_kw: <Id.KW_If if>
                      arms: [
                        (IfArm
                          keyword: <Id.KW_If if>
                          cond: 
                            (condition.Shell
                              commands: [
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                                  child: 
                                    (command.DParen
                                      left: <Id.Op_DLeftParen _>
                                      child: ($ Id.Lit_ArithVarLike count)
                                      right: <Id.Op_DRightParen _>
                                      redirects: []
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          then_kw: <Id.KW_Then then>
                          action: [
                            (command.Simple
                              blame_tok: <eval>
                              more_env: []
                              words: [
                                {<eval>}
                                {
                                  (DQ <'_Dbg_source_line='> 
                                    (word_part.EscapedLiteral
                                      token: <Id.Lit_EscapedChar '\\$'>
                                      ch: '$'
                                    ) <'{'> ($ Id.VSub_DollarName _Dbg_highlight_array_var) <'[lineno]}'>
                                  )
                                }
                              ]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          spids: [617 628]
                        )
                      ]
                      else_kw: <Id.KW_Else else>
                      else_action: [
                        (command.Simple
                          blame_tok: <eval>
                          more_env: []
                          words: [
                            {<eval>}
                            {
                              (DQ <'_Dbg_source_line='> 
                                (word_part.EscapedLiteral
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                      rhs: {($ Id.VSub_DollarName _Dbg_source_array_var)}
                    )
                  ]
                  redirects: []
                )
              terminator: <Id.Op_Semi _>
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <_Dbg_readin_if_new>
      name: _Dbg_readin_if_new
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.AndOr
              children: [
                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<1>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.Simple
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              more_env: []
              words: [{<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number 1))}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <_Dbg_set_source_array_var>
              more_env: []
              words: [{<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_DollarName filename))}]
              redirects: []
              do_fork: T
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
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                          child: 
                            (command.DBracket
                              left: <Id.KW_DLeftBracket '[['>
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_z
                                  child: {(DQ ($ Id.VSub_DollarName fullname))}
                                )
                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.Simple
                      blame_tok: <_Dbg_readin>
                      more_env: []
                      words: [{<_Dbg_readin>} {(DQ ($ Id.VSub_DollarName filename))}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <typeset>
                      more_env: []
                      words: [{<typeset>} {<Id.Lit_VarLike 'rc='> ($ Id.VSub_QMark '?')}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <set>
                      more_env: []
                      words: [{<set>} {<Id.Lit_Other '+'> <xv>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.AndOr
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                        (command.DParen
                          left: <Id.Op_DLeftParen _>
                          child: 
                            (arith_expr.Binary
                              op_id: Id.Arith_NEqual
                              left: {($ Id.VSub_QMark '?')}
                              right: {<Id.Lit_Digits 0>}
                            )
                          right: <Id.Op_DRightParen _>
                          redirects: []
                        )
                        (command.ControlFlow
                          keyword: <Id.ControlFlow_Return return>
                          arg_word: {($ Id.VSub_DollarName rc)}
                        )
                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.AndOr
                      children: [
                        (command.DBracket
                          left: <Id.KW_DLeftBracket '[['>
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_z
                              child: {($ Id.VSub_DollarName fullname)}
                            )
                          right: <Id.Lit_DRightBracket ']]'>
                          redirects: []
                        )
                        (command.ControlFlow
                          keyword: <Id.ControlFlow_Return return>
                          arg_word: {<1>}
                        )
                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.AndOr
                      children: [
                        (command.Simple
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                          more_env: []
                          words: [{<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_DollarName filename))}]
                          redirects: []
                          do_fork: T
                        )
                        (command.ControlFlow
                          keyword: <Id.ControlFlow_Return return>
                          arg_word: {($ Id.VSub_QMark '?')}
                        )
                      ]
                      ops: [<Id.Op_DPipe _>]
                    )
                  ]
                  spids: [1789 1803]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.ShFunction
      name_tok: <_Dbg_set_source_array_var>
      name: _Dbg_set_source_array_var
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.AndOr
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                (command.DParen
                  left: <Id.Op_DLeftParen _>
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                  right: <Id.Op_DRightParen _>
                  redirects: []
                )
                (command.ControlFlow
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                  arg_word: {<1>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.Simple
              blame_tok: <typeset>
              more_env: []
              words: [{<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number 1))}]
              redirects: []
              do_fork: T
            )
            (command.AndOr
              children: [
                (command.DBracket
                  left: <Id.KW_DLeftBracket '[['>
                  expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName filename)})
                  right: <Id.Lit_DRightBracket ']]'>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'fullname='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'fullname='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'fullname='> name:fullname)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (BracedVarSub
                        left: <Id.Left_DollarBrace '${'>
                        token: <Id.VSub_Name _Dbg_file2canonic>
                        var_name: _Dbg_file2canonic
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName filename)})
                        right: <Id.Right_DollarBrace '}'>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.AndOr
              children: [
                (command.DBracket
                  left: <Id.KW_DLeftBracket '[['>
                  expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName fullname)})
                  right: <Id.Lit_DRightBracket ']]'>
                  redirects: []
                )
                (command.DBracket
                  left: <Id.KW_DLeftBracket '[['>
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: 
                        {
                          (BracedVarSub
                            left: <Id.Left_DollarBrace '${'>
                            token: <Id.VSub_Name _Dbg_filenames>
                            var_name: _Dbg_filenames
                            bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName filename)})
                            right: <Id.Right_DollarBrace '}'>
                          )
                        }
                    )
                  right: <Id.Lit_DRightBracket ']]'>
                  redirects: []
                )
                (BraceGroup
                  left: <Id.Lit_LBrace '{'>
                  children: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike 'fullname='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike 'fullname='>
                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'fullname='> name:fullname)
                          op: assign_op.Equal
                          rhs: {(DQ ($ Id.VSub_DollarName filename))}
                        )
                      ]
                      redirects: []
                    )
                  ]
                  redirects: []
                  right: <Id.Lit_RBrace '}'>
                )
              ]
              ops: [<Id.Op_DAmp _> <Id.Op_DAmp _>]
            )
            (command.AndOr
              children: [
                (command.DBracket
                  left: <Id.KW_DLeftBracket '[['>
                  expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName fullname)})
                  right: <Id.Lit_DRightBracket ']]'>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_source_array_var='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_source_array_var='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_source_array_var='>
                      name: _Dbg_source_array_var
                    )
                  op: assign_op.Equal
                  rhs: 
                    {
                      (BracedVarSub
                        left: <Id.Left_DollarBrace '${'>
                        token: <Id.VSub_Name _Dbg_filenames>
                        var_name: _Dbg_filenames
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName fullname)})
                        right: <Id.Right_DollarBrace '}'>
                      )
                    }
                )
              ]
              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.Unary
                                  op_id: Id.BoolUnary_n
                                  child: {($ Id.VSub_DollarName _Dbg_set_highlight)}
                                )
                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (command.ShAssignment
                      left: <Id.Lit_VarLike '_Dbg_highlight_array_var='>
                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike '_Dbg_highlight_array_var='>
                          lhs: 
                            (sh_lhs_expr.Name
                              left: <Id.Lit_VarLike '_Dbg_highlight_array_var='>
                              name: _Dbg_highlight_array_var
                            )
                          op: assign_op.Equal
                          rhs: 
                            {
                              (DQ 
                                (BracedVarSub
                                  left: <Id.Left_DollarBrace '${'>
                                  token: <Id.VSub_Name _Dbg_source_array_var>
                                  var_name: _Dbg_source_array_var
                                  suffix_op: 
                                    (suffix_op.PatSub
                                      pat: {<_Dbg_source_>}
                                      replace: {<_Dbg_highlight_>}
                                      replace_mode: Id.Undefined_Tok
                                      slash_tok: <Id.VOp2_Slash _>
                                    )
                                  right: <Id.Right_DollarBrace '}'>
                                )
                              )
                            }
                        )
                      ]
                      redirects: []
                    )
                  ]
                  spids: [2008 2020]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike '_Dbg_source_array_var='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike '_Dbg_source_array_var='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike '_Dbg_source_array_var='>
                      name: _Dbg_source_array_var
                    )
                  op: assign_op.Equal
                  rhs: 
                    {
                      (BracedVarSub
                        left: <Id.Left_DollarBrace '${'>
                        token: <Id.VSub_Name _Dbg_filenames>
                        var_name: _Dbg_filenames
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName fullname)})
                        right: <Id.Right_DollarBrace '}'>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.AndOr
              children: [
                (command.DBracket
                  left: <Id.KW_DLeftBracket '[['>
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_z
                      child: {($ Id.VSub_DollarName _Dbg_source_array_var)}
                    )
                  right: <Id.Lit_DRightBracket ']]'>
                  redirects: []
                )
                (command.ControlFlow
                  keyword: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
  ]
)