(command.CommandList
  children: [
    (C {<typeset>} {<Id.Lit_VarLike '_Dbg_bogus_file='> (SQ <' A really bogus file'>)})
    (C {<typeset>} {<-A>} {<_Dbg_file2canonic>})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:_Dbg_file2canonic)
          op: assign_op.Equal
          rhs: {(sh_array_literal left:<Id.Op_LParen _>)}
          spids: [75]
        )
      ]
    )
    (C {<typeset>} {<-A>} {<_Dbg_fileinfo>})
    (C {<typeset>} {<-A>} {<_Dbg_filenames>})
    (command.ShFunction
      name: _Dbg_filecache_reset
      body: 
        (BraceGroup
          children: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_filenames)
                  op: assign_op.Equal
                  rhs: {(sh_array_literal left:<Id.Op_LParen _>)}
                  spids: [110]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_fileinfo)
                  op: assign_op.Equal
                  rhs: {(sh_array_literal left:<Id.Op_LParen _>)}
                  spids: [115]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_file2canonic)
                  op: assign_op.Equal
                  rhs: {(sh_array_literal left:<Id.Op_LParen _>)}
                  spids: [120]
                )
              ]
            )
          ]
        )
    )
    (C {<_Dbg_filecache_reset>})
    (command.ShFunction
      name: _Dbg_check_line
      body: 
        (BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DParen
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '$#')}
                      right: {<Id.Lit_Digits 2>}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<1>}
                )
              ]
            )
            (C {<typeset>} {<-i>} {<Id.Lit_VarLike 'line_number='> ($ Id.VSub_Number '$1')})
            (C {<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number '$2'))})
            (C {<typeset>} {<-i>} {<max_line>})
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:max_line)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (command_sub
                        left_token: <Id.Left_DollarParen '$('>
                        child: (C {<_Dbg_get_maxline>} {(DQ ($ Id.VSub_DollarName '$filename'))})
                      )
                    }
                  spids: [183]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_NEqual
                                  left: {($ Id.VSub_QMark '$?')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<_Dbg_errmsg>} 
                      {
                        (DQ <'internal error getting number of lines in '> 
                          ($ Id.VSub_DollarName '$filename')
                        )
                      }
                    )
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [193 208]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_Great
                                  left: <Id.Lit_ArithVarLike line_number>
                                  right: <Id.Lit_ArithVarLike max_line>
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (command.DParen
                          child: <Id.Lit_ArithVarLike _Dbg_set_basename>
                        )
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:filename)
                              op: assign_op.Equal
                              rhs: 
                                {
                                  (braced_var_sub
                                    token: <Id.VSub_Name filename>
                                    suffix_op: 
                                      (suffix_op.Unary
                                        tok: <Id.VOp1_DPound '##'>
                                        arg_word: {<Id.Lit_Other '*'> <Id.Lit_Slash '/'>}
                                      )
                                  )
                                }
                              spids: [255]
                            )
                          ]
                        )
                      ]
                    )
                    (C {<_Dbg_errmsg>} 
                      {(DQ <'Line '> ($ Id.VSub_DollarName '$line_number') <' is too large.'>)} 
                      {
                        (DQ <'File '> ($ Id.VSub_DollarName '$filename') <' has only '> 
                          ($ Id.VSub_DollarName '$max_line') <' lines.'>
                        )
                      }
                    )
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [228 243]
                )
              ]
            )
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_file_not_read_in
      body: 
        (BraceGroup
          children: [
            (C {<typeset>} {<-r>} 
              {<Id.Lit_VarLike 'filename='> 
                (command_sub
                  left_token: <Id.Left_DollarParen '$('>
                  child: (C {<_Dbg_adjust_filename>} {(DQ ($ Id.VSub_Number '$1'))})
                )
              }
            )
            (C {<_Dbg_errmsg>} 
              {
                (DQ <'File '> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) 
                  ($ Id.VSub_DollarName '$filename') (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) <' not found in read-in files.'>
                )
              }
            )
            (C {<_Dbg_errmsg>} {(DQ <'See \'info files\' for a list of known files and'>)})
            (C {<_Dbg_errmsg>} {(DQ <'\'load\' to read in a file.'>)})
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_get_maxline
      body: 
        (BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DParen
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '$#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<-1>}
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_Number '$1'))})
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {($ Id.VSub_QMark '$?')}
                )
              ]
            )
            (C {<typeset>} {<-r>} 
              {<Id.Lit_VarLike 'line_count_cmd='> 
                (DQ <'line_count='> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\$'>) <'{#'> 
                  ($ Id.VSub_DollarName '$_Dbg_source_array_var') <'[@]}'>
                )
              }
            )
            (C {<eval>} {($ Id.VSub_DollarName '$line_count_cmd')})
            (C {<eval>} 
              {
                (DQ <'typeset last_line; last_line='> 
                  (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\$'>) <'{'> (${ Id.VSub_Name _Dbg_source_array_var) <'['> ($ Id.VSub_DollarName '$line_count') <']}'>
                )
              }
            )
            (C {<typeset>} {<-i>} {<Id.Lit_VarLike 'last_not_null='> <0>})
            (command.DParen
              child: 
                (arith_expr.BinaryAssign
                  op_id: Id.Arith_Equal
                  left: <Id.Lit_ArithVarLike line_count>
                  right: 
                    (arith_expr.Binary
                      op_id: Id.Arith_Minus
                      left: <Id.Lit_ArithVarLike line_count>
                      right: <Id.Lit_ArithVarLike last_line_is_null>
                    )
                )
            )
            (C {<echo>} {($ Id.VSub_DollarName '$line_count')})
            (command.ControlFlow
              token: <Id.ControlFlow_Return return>
              arg_word: {($ Id.VSub_QMark '$?')}
            )
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_get_source_line
      body: 
        (BraceGroup
          children: [
            (C {<typeset>} {<-i>} {<lineno>})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_DEqual
                                  left: {($ Id.VSub_Pound '$#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:lineno)
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_DollarName '$_Dbg_frame_last_lineno')}
                          spids: [517]
                        )
                      ]
                    )
                  ]
                  spids: [500 514]
                )
              ]
              else_action: [
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:lineno)
                      op: assign_op.Equal
                      rhs: {($ Id.VSub_Number '$1')}
                      spids: [524]
                    )
                  ]
                )
                (C {<shift>})
              ]
            )
            (C {<typeset>} {<filename>})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_DEqual
                                  left: {($ Id.VSub_Pound '$#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:filename)
                          op: assign_op.Equal
                          rhs: {(DQ ($ Id.VSub_DollarName '$_Dbg_frame_last_filename'))}
                          spids: [557]
                        )
                      ]
                    )
                  ]
                  spids: [539 554]
                )
              ]
              else_action: [
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:filename)
                      op: assign_op.Equal
                      rhs: {(DQ ($ Id.VSub_Number '$1'))}
                      spids: [566]
                    )
                  ]
                )
              ]
            )
            (C {<_Dbg_readin_if_new>} {(DQ ($ Id.VSub_DollarName '$filename'))})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.AndOr
                              ops: [Id.Op_DAmp]
                              children: [
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_n
                                      child: {($ Id.VSub_DollarName '$_Dbg_set_highlight')}
                                    )
                                )
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_n
                                      child: {($ Id.VSub_DollarName '$_Dbg_highlight_array_var')}
                                    )
                                )
                              ]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<eval>} 
                      {
                        (DQ <'typeset -i count='> 
                          (word_part.EscapedLiteral
                            token: <Id.Lit_EscapedChar '\\$'>
                          ) <'{#'> ($ Id.VSub_DollarName '$_Dbg_highlight_array_var') <'[@]}'>
                        )
                      }
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: (command.DParen child:<Id.Lit_ArithVarLike count>)
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (C {<eval>} 
                              {
                                (DQ <'_Dbg_source_line='> 
                                  (word_part.EscapedLiteral
                                    token: <Id.Lit_EscapedChar '\\$'>
                                  ) <'{'> ($ Id.VSub_DollarName '$_Dbg_highlight_array_var') <'[lineno]}'>
                                )
                              }
                            )
                          ]
                          spids: [617 628]
                        )
                      ]
                      else_action: [
                        (C {<eval>} 
                          {
                            (DQ <'_Dbg_source_line='> 
                              (word_part.EscapedLiteral
                                token: <Id.Lit_EscapedChar '\\$'>
                              ) <'{'> ($ Id.VSub_DollarName '$_Dbg_source_array_var') <'['> ($ Id.VSub_DollarName '$lineno') <']}'>
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [582 603]
                )
              ]
              else_action: [
                (C {<eval>} 
                  {
                    (DQ <'_Dbg_source_line='> 
                      (word_part.EscapedLiteral
                        token: <Id.Lit_EscapedChar '\\$'>
                      ) <'{'> ($ Id.VSub_DollarName '$_Dbg_source_array_var') <'['> ($ Id.VSub_DollarName '$lineno') <']}'>
                    )
                  }
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_is_file
      body: 
        (BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_DEqual
                                  left: {($ Id.VSub_Pound '$#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<_Dbg_errmsg>} {(DQ <'Internal debug error _Dbg_is_file(): null file to find'>)})
                    (C {<echo>} {(SQ )})
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [695 710]
                )
              ]
            )
            (C {<typeset>} {<Id.Lit_VarLike 'find_file='> (DQ ($ Id.VSub_Number '$1'))})
            (C {<typeset>} {<try_find_file>})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_z
                                  child: {($ Id.VSub_DollarName '$find_file')}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<_Dbg_errmsg>} 
                      {(DQ <'Internal debug error _Dbg_is_file(): file argument null'>)}
                    )
                    (C {<echo>} {(SQ )})
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [748 760]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: 
                                    {
                                      (braced_var_sub
                                        token: <Id.VSub_Name find_file>
                                        suffix_op: 
                                          (suffix_op.Slice
                                            begin: {<Id.Lit_Digits 0>}
                                            length: {<Id.Lit_Digits 1>}
                                          )
                                      )
                                    }
                                  right: {(SQ <'/'>)}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:try_find_file)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                child: 
                                  (C {<_Dbg_expand_filename>} {(DQ ($ Id.VSub_DollarName '$find_file'))})
                              )
                            }
                          spids: [814]
                        )
                      ]
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Unary
                                          op_id: Id.BoolUnary_n
                                          child: 
                                            {
                                              (braced_var_sub
                                                token: <Id.VSub_Name _Dbg_filenames>
                                                bracket_op: 
                                                  (bracket_op.ArrayIndex
                                                    expr: {($ Id.VSub_DollarName '$try_find_file')}
                                                  )
                                              )
                                            }
                                        )
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (C {<echo>} {(DQ ($ Id.VSub_DollarName '$try_find_file'))})
                            (command.ControlFlow
                              token: <Id.ControlFlow_Return return>
                              arg_word: {<0>}
                            )
                          ]
                          spids: [824 841]
                        )
                      ]
                    )
                  ]
                  spids: [785 807]
                )
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: 
                                    {
                                      (braced_var_sub
                                        token: <Id.VSub_Name find_file>
                                        suffix_op: 
                                          (suffix_op.Slice
                                            begin: {<Id.Lit_Digits 0>}
                                            length: {<Id.Lit_Digits 1>}
                                          )
                                      )
                                    }
                                  right: {(SQ <.>)}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:try_find_file)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                child: 
                                  (C {<_Dbg_expand_filename>} 
                                    {
                                      (DQ (${ Id.VSub_Name _Dbg_init_cwd) <'/'> 
                                        ($ Id.VSub_DollarName '$find_file')
                                      )
                                    }
                                  )
                              )
                            }
                          spids: [888]
                        )
                      ]
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Unary
                                          op_id: Id.BoolUnary_n
                                          child: 
                                            {
                                              (braced_var_sub
                                                token: <Id.VSub_Name _Dbg_filenames>
                                                bracket_op: 
                                                  (bracket_op.ArrayIndex
                                                    expr: {($ Id.VSub_DollarName '$try_find_file')}
                                                  )
                                              )
                                            }
                                        )
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (C {<echo>} {(DQ ($ Id.VSub_DollarName '$try_find_file'))})
                            (command.ControlFlow
                              token: <Id.ControlFlow_Return return>
                              arg_word: {<0>}
                            )
                          ]
                          spids: [906 923]
                        )
                      ]
                    )
                  ]
                  spids: [859 881]
                )
              ]
              else_action: [
                (C {<typeset>} {<-i>} 
                  {<Id.Lit_VarLike 'n='> 
                    (braced_var_sub
                      token: <Id.VSub_Name _Dbg_dir>
                      prefix_op: (Id.VSub_Pound)
                      bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                    )
                  }
                )
                (C {<typeset>} {<-i>} {<i>})
                (command.ForExpr
                  init: 
                    (arith_expr.BinaryAssign
                      op_id: Id.Arith_Equal
                      left: <Id.Lit_ArithVarLike i>
                      right: {<Id.Lit_Digits 0>}
                    )
                  cond: 
                    (arith_expr.Binary
                      op_id: Id.Arith_Less
                      left: <Id.Lit_ArithVarLike i>
                      right: <Id.Lit_ArithVarLike n>
                    )
                  update: 
                    (arith_expr.UnaryAssign
                      op_id: Id.Node_PostDPlus
                      child: <Id.Lit_ArithVarLike i>
                    )
                  body: 
                    (command.DoGroup
                      children: [
                        (C {<typeset>} 
                          {<Id.Lit_VarLike 'basename='> 
                            (DQ 
                              (braced_var_sub
                                token: <Id.VSub_Name _Dbg_dir>
                                bracket_op: (bracket_op.ArrayIndex expr:<Id.Lit_ArithVarLike i>)
                              )
                            )
                          }
                        )
                        (command.If
                          arms: [
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (command.Sentence
                                      child: 
                                        (command.DBracket
                                          expr: 
                                            (bool_expr.Binary
                                              op_id: Id.BoolBinary_GlobDEqual
                                              left: {($ Id.VSub_DollarName '$basename')}
                                              right: {(SQ <'\\$cdir'>)}
                                            )
                                        )
                                      terminator: <Id.Op_Semi _>
                                    )
                                  ]
                                )
                              action: [
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:basename)
                                      op: assign_op.Equal
                                      rhs: {($ Id.VSub_DollarName '$_Dbg_cdir')}
                                      spids: [1029]
                                    )
                                  ]
                                )
                              ]
                              spids: [1010 1026]
                            )
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (command.Sentence
                                      child: 
                                        (command.DBracket
                                          expr: 
                                            (bool_expr.Binary
                                              op_id: Id.BoolBinary_GlobDEqual
                                              left: {($ Id.VSub_DollarName '$basename')}
                                              right: {(SQ <'\\$cwd'>)}
                                            )
                                        )
                                      terminator: <Id.Op_Semi _>
                                    )
                                  ]
                                )
                              action: [
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:basename)
                                      op: assign_op.Equal
                                      rhs: 
                                        {
                                          (command_sub
                                            left_token: <Id.Left_DollarParen '$('>
                                            child: (C {<pwd>})
                                          )
                                        }
                                      spids: [1052]
                                    )
                                  ]
                                )
                              ]
                              spids: [1033 1049]
                            )
                          ]
                        )
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:try_find_file)
                              op: assign_op.Equal
                              rhs: 
                                {
                                  (DQ ($ Id.VSub_DollarName '$basename') <'/'> 
                                    ($ Id.VSub_DollarName '$find_file')
                                  )
                                }
                              spids: [1061]
                            )
                          ]
                        )
                        (command.If
                          arms: [
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (command.Sentence
                                      child: 
                                        (command.DBracket
                                          expr: 
                                            (bool_expr.Unary
                                              op_id: Id.BoolUnary_f
                                              child: {(DQ ($ Id.VSub_DollarName '$try_find_file'))}
                                            )
                                        )
                                      terminator: <Id.Op_Semi _>
                                    )
                                  ]
                                )
                              action: [
                                (C {<echo>} {(DQ ($ Id.VSub_DollarName '$try_find_file'))})
                                (command.ControlFlow
                                  token: <Id.ControlFlow_Return return>
                                  arg_word: {<0>}
                                )
                              ]
                              spids: [1069 1083]
                            )
                          ]
                        )
                      ]
                    )
                )
              ]
            )
            (C {<echo>} {(SQ )})
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<1>})
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_readin
      body: 
        (BraceGroup
          children: [
            (C {<typeset>} {<filename>})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_NEqual
                                  left: {($ Id.VSub_Pound '$#')}
                                  right: {<Id.Lit_Digits 0>}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:filename)
                          op: assign_op.Equal
                          rhs: {(DQ ($ Id.VSub_Number '$1'))}
                          spids: [1163]
                        )
                      ]
                    )
                  ]
                  spids: [1147 1160]
                )
              ]
              else_action: [
                (C {<_Dbg_frame_file>})
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:filename)
                      op: assign_op.Equal
                      rhs: {(DQ ($ Id.VSub_DollarName '$_Dbg_frame_filename'))}
                      spids: [1175]
                    )
                  ]
                )
              ]
            )
            (C {<typeset>} {<-i>} {<Id.Lit_VarLike 'line_count='> <0>})
            (command.Sentence
              child: (C {<typeset>} {<-i>} {<next>})
              terminator: <Id.Op_Semi _>
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:next)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (braced_var_sub
                        token: <Id.VSub_Name _Dbg_filenames>
                        prefix_op: (Id.VSub_Pound)
                        bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                      )
                    }
                  spids: [1202]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_source_array_var)
                  op: assign_op.Equal
                  rhs: {(DQ <_Dbg_source_> (${ Id.VSub_Name next))}
                  spids: [1212]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_n
                                  child: {($ Id.VSub_DollarName '$_Dbg_set_highlight')}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:_Dbg_highlight_array_var)
                          op: assign_op.Equal
                          rhs: {(DQ <_Dbg_highlight_> (${ Id.VSub_Name next))}
                          spids: [1236]
                        )
                      ]
                    )
                  ]
                  spids: [1221 1233]
                )
              ]
            )
            (C {<typeset>} {<filevar>})
            (C {<typeset>} {<source_array>})
            (C {<typeset>} {<-ri>} {<Id.Lit_VarLike 'NOT_SMALLFILE='> <1000>})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.AndOr
                              ops: [Id.Op_DPipe]
                              children: [
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_z
                                      child: {($ Id.VSub_DollarName '$filename')}
                                    )
                                )
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Binary
                                      op_id: Id.BoolBinary_GlobDEqual
                                      left: {($ Id.VSub_DollarName '$filename')}
                                      right: {(DQ ($ Id.VSub_DollarName '$_Dbg_bogus_file'))}
                                    )
                                )
                              ]
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<eval>} 
                      {
                        (DQ (${ Id.VSub_Name _Dbg_source_array_var) <'[0]='> 
                          (word_part.EscapedLiteral
                            token: <Id.Lit_EscapedChar '\\"'>
                          ) ($ Id.VSub_DollarName '$Dbg_EXECUTION_STRING') 
                          (word_part.EscapedLiteral
                            token: <Id.Lit_EscapedChar '\\"'>
                          )
                        )
                      }
                    )
                  ]
                  spids: [1268 1294]
                )
              ]
              else_action: [
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fullname)
                      op: assign_op.Equal
                      rhs: 
                        {
                          (command_sub
                            left_token: <Id.Left_DollarParen '$('>
                            child: 
                              (C {<_Dbg_resolve_expand_filename>} 
                                {(DQ ($ Id.VSub_DollarName '$filename'))}
                              )
                          )
                        }
                      spids: [1313]
                    )
                  ]
                )
                (command.If
                  arms: [
                    (if_arm
                      cond: 
                        (condition.Shell
                          commands: [
                            (command.Sentence
                              child: 
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Unary
                                      op_id: Id.BoolUnary_r
                                      child: {($ Id.VSub_DollarName '$fullname')}
                                    )
                                )
                              terminator: <Id.Op_Semi _>
                            )
                          ]
                        )
                      action: [
                        (C {<typeset>} {<-r>} 
                          {<Id.Lit_VarLike 'progress_prefix='> 
                            (DQ <'Reading '> ($ Id.VSub_DollarName '$filename'))
                          }
                        )
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: 
                                (sh_lhs_expr.IndexedName
                                  name: _Dbg_file2canonic
                                  index: {($ Id.VSub_DollarName '$filename')}
                                )
                              op: assign_op.Equal
                              rhs: {(DQ ($ Id.VSub_DollarName '$fullname'))}
                              spids: [1349]
                            )
                          ]
                        )
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: 
                                (sh_lhs_expr.IndexedName
                                  name: _Dbg_file2canonic
                                  index: {($ Id.VSub_DollarName '$fullname')}
                                )
                              op: assign_op.Equal
                              rhs: {(DQ ($ Id.VSub_DollarName '$fullname'))}
                              spids: [1359]
                            )
                          ]
                        )
                        (C {<typeset>} {<-ri>} {<Id.Lit_VarLike 'BIGFILE='> <30000>})
                        (command.If
                          arms: [
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (command.Sentence
                                      child: 
                                        (command.Simple
                                          words: [{<wc>} {<-l>}]
                                          redirects: [
                                            (redir
                                              op: <Id.Redir_Less '<'>
                                              loc: (redir_loc.Fd fd:0)
                                              arg: {<'/dev/null'>}
                                            )
                                            (redir
                                              op: <Id.Redir_Great '>'>
                                              loc: (redir_loc.Fd fd:1)
                                              arg: {<'/dev/null'>}
                                            )
                                            (redir
                                              op: <Id.Redir_GreatAnd '2>&'>
                                              loc: (redir_loc.Fd fd:2)
                                              arg: {<1>}
                                            )
                                          ]
                                          do_fork: T
                                        )
                                      terminator: <Id.Op_Semi _>
                                    )
                                  ]
                                )
                              action: [
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:line_count)
                                      op: assign_op.Equal
                                      rhs: 
                                        {
                                          (command_sub
                                            left_token: <Id.Left_DollarParen '$('>
                                            child: 
                                              (command.Simple
                                                words: [{<wc>} {<-l>}]
                                                redirects: [
                                                  (redir
                                                    op: <Id.Redir_Less '<'>
                                                    loc: (redir_loc.Fd fd:0)
                                                    arg: {(DQ (${ Id.VSub_Name fullname))}
                                                  )
                                                ]
                                                do_fork: T
                                              )
                                          )
                                        }
                                      spids: [1402]
                                    )
                                  ]
                                )
                                (command.If
                                  arms: [
                                    (if_arm
                                      cond: 
                                        (condition.Shell
                                          commands: [
                                            (command.Sentence
                                              child: 
                                                (command.DParen
                                                  child: 
                                                    (arith_expr.Binary
                                                      op_id: Id.Arith_GreatEqual
                                                      left: <Id.Lit_ArithVarLike line_count>
                                                      right: <Id.Lit_ArithVarLike NOT_SMALLFILE>
                                                    )
                                                )
                                              terminator: <Id.Op_Semi _>
                                            )
                                          ]
                                        )
                                      action: [
                                        (C {<_Dbg_msg_nocr>} 
                                          {(DQ (${ Id.VSub_Name progress_prefix) <' '>)}
                                        )
                                      ]
                                      spids: [1418 1433]
                                    )
                                  ]
                                )
                              ]
                              spids: [1381 1399]
                            )
                          ]
                        )
                        (command.Simple
                          words: [
                            {<builtin>}
                            {<readarray>}
                            {<-t>}
                            {<-O>}
                            {<1>}
                            {<-c>}
                            {($ Id.VSub_DollarName '$BIGFILE')}
                            {<-C>}
                            {
                              (DQ <'_Dbg_progess_show '> 
                                (word_part.EscapedLiteral
                                  token: <Id.Lit_EscapedChar '\\"'>
                                ) (${ Id.VSub_Name progress_prefix) (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) <' '> 
                                (${ Id.VSub_Name line_count)
                              )
                            }
                            {($ Id.VSub_DollarName '$_Dbg_source_array_var')}
                          ]
                          redirects: [
                            (redir
                              op: <Id.Redir_Less '<'>
                              loc: (redir_loc.Fd fd:0)
                              arg: {(DQ ($ Id.VSub_DollarName '$fullname'))}
                            )
                          ]
                          do_fork: T
                        )
                        (command.If
                          arms: [
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (command.Sentence
                                      child: 
                                        (command.DBracket
                                          expr: 
                                            (bool_expr.Unary
                                              op_id: Id.BoolUnary_n
                                              child: {($ Id.VSub_DollarName '$_Dbg_set_highlight')}
                                            )
                                        )
                                      terminator: <Id.Op_Semi _>
                                    )
                                  ]
                                )
                              action: [
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:opts)
                                      op: assign_op.Equal
                                      rhs: {(DQ <'--bg='> (${ Id.VSub_Name _Dbg_set_highlight))}
                                      spids: [1509]
                                    )
                                  ]
                                )
                                (command.If
                                  arms: [
                                    (if_arm
                                      cond: 
                                        (condition.Shell
                                          commands: [
                                            (command.Sentence
                                              child: 
                                                (command.DBracket
                                                  expr: 
                                                    (bool_expr.Unary
                                                      op_id: Id.BoolUnary_n
                                                      child: 
                                                        {($ Id.VSub_DollarName '$_Dbg_set_style')}
                                                    )
                                                )
                                              terminator: <Id.Op_Semi _>
                                            )
                                          ]
                                        )
                                      action: [
                                        (command.ShAssignment
                                          pairs: [
                                            (assign_pair
                                              lhs: (sh_lhs_expr.Name name:opts)
                                              op: assign_op.Equal
                                              rhs: {(DQ <'--style='> (${ Id.VSub_Name _Dbg_set_style))}
                                              spids: [1533]
                                            )
                                          ]
                                        )
                                      ]
                                      spids: [1518 1530]
                                    )
                                  ]
                                )
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:highlight_cmd)
                                      op: assign_op.Equal
                                      rhs: 
                                        {
                                          (DQ (${ Id.VSub_Name _Dbg_libdir) 
                                            <'/lib/term-highlight.py '> ($ Id.VSub_DollarName '$opts') <' '> ($ Id.VSub_DollarName '$fullname')
                                          )
                                        }
                                      spids: [1545]
                                    )
                                  ]
                                )
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:tempfile)
                                      op: assign_op.Equal
                                      rhs: 
                                        {
                                          (command_sub
                                            left_token: <Id.Left_DollarParen '$('>
                                            child: 
                                              (command.Simple
                                                words: [{($ Id.VSub_DollarName '$highlight_cmd')}]
                                                redirects: [
                                                  (redir
                                                    op: <Id.Redir_Great '2>'>
                                                    loc: (redir_loc.Fd fd:2)
                                                    arg: {<'/dev/null'>}
                                                  )
                                                ]
                                                do_fork: T
                                              )
                                          )
                                        }
                                      spids: [1557]
                                    )
                                  ]
                                )
                                (command.If
                                  arms: [
                                    (if_arm
                                      cond: 
                                        (condition.Shell
                                          commands: [
                                            (command.Sentence
                                              child: 
                                                (command.DParen
                                                  child: 
                                                    (arith_expr.Binary
                                                      op_id: Id.Arith_DEqual
                                                      left: {<Id.Lit_Digits 0>}
                                                      right: {($ Id.VSub_QMark '$?')}
                                                    )
                                                )
                                              terminator: <Id.Op_Semi _>
                                            )
                                          ]
                                        )
                                      action: [
                                        (command.Simple
                                          words: [
                                            {<builtin>}
                                            {<readarray>}
                                            {<-t>}
                                            {<-O>}
                                            {<1>}
                                            {<-c>}
                                            {($ Id.VSub_DollarName '$BIGFILE')}
                                            {<-C>}
                                            {
                                              (DQ <'_Dbg_progess_show '> 
                                                (word_part.EscapedLiteral
                                                  token: <Id.Lit_EscapedChar '\\"'>
                                                ) (${ Id.VSub_Name progress_prefix) (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) <' '> 
                                                (${ Id.VSub_Name line_count)
                                              )
                                            }
                                            {($ Id.VSub_DollarName '$_Dbg_highlight_array_var')}
                                          ]
                                          redirects: [
                                            (redir
                                              op: <Id.Redir_Less '<'>
                                              loc: (redir_loc.Fd fd:0)
                                              arg: {(DQ ($ Id.VSub_DollarName '$tempfile'))}
                                            )
                                          ]
                                          do_fork: T
                                        )
                                      ]
                                      spids: [1566 1581]
                                    )
                                  ]
                                )
                                (command.AndOr
                                  ops: [Id.Op_DAmp]
                                  children: [
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Unary
                                          op_id: Id.BoolUnary_r
                                          child: {($ Id.VSub_DollarName '$tempfile')}
                                        )
                                    )
                                    (C {<rm>} {($ Id.VSub_DollarName '$tempfile')})
                                  ]
                                )
                              ]
                              spids: [1494 1506]
                            )
                          ]
                        )
                        (command.AndOr
                          ops: [Id.Op_DAmp]
                          children: [
                            (command.DParen
                              child: 
                                (arith_expr.Binary
                                  op_id: Id.Arith_Great
                                  left: <Id.Lit_ArithVarLike line_count>
                                  right: <Id.Lit_ArithVarLike BIGFILE>
                                )
                            )
                            (C {<_Dbg_progess_done>})
                          ]
                        )
                      ]
                      spids: [1323 1335]
                    )
                  ]
                  else_action: [
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<1>}
                    )
                  ]
                )
              ]
            )
            (C {<typeset>} {<-r>} 
              {<Id.Lit_VarLike 'line_count_cmd='> 
                (DQ <'line_count='> (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\$'>) <'{#'> 
                  (braced_var_sub
                    token: <Id.VSub_Name _Dbg_source_array_var>
                    bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                  ) <'}'>
                )
              }
            )
            (C {<eval>} {($ Id.VSub_DollarName '$line_count_cmd')})
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DParen
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_GreatEqual
                      left: <Id.Lit_ArithVarLike line_count>
                      right: <Id.Lit_ArithVarLike NOT_SMALLFILE>
                    )
                )
                (C {<_Dbg_msg>} {(DQ <done.>)})
              ]
            )
            (command.Sentence
              child: 
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: 
                        (sh_lhs_expr.IndexedName
                          name: _Dbg_filenames
                          index: {($ Id.VSub_DollarName '$fullname')}
                        )
                      op: assign_op.Equal
                      rhs: {($ Id.VSub_DollarName '$_Dbg_source_array_var')}
                      spids: [1727]
                    )
                  ]
                )
              terminator: <Id.Op_Semi _>
            )
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_readin_if_new
      body: 
        (BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DParen
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '$#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<1>}
                )
              ]
            )
            (C {<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number '$1'))})
            (C {<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_DollarName '$filename'))})
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_z
                                  child: {(DQ ($ Id.VSub_DollarName '$fullname'))}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (C {<_Dbg_readin>} {(DQ ($ Id.VSub_DollarName '$filename'))})
                    (C {<typeset>} {<Id.Lit_VarLike 'rc='> ($ Id.VSub_QMark '$?')})
                    (C {<set>} {<Id.Lit_Other '+'> <xv>})
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (command.DParen
                          child: 
                            (arith_expr.Binary
                              op_id: Id.Arith_NEqual
                              left: {($ Id.VSub_QMark '$?')}
                              right: {<Id.Lit_Digits 0>}
                            )
                        )
                        (command.ControlFlow
                          token: <Id.ControlFlow_Return return>
                          arg_word: {($ Id.VSub_DollarName '$rc')}
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_z
                              child: {($ Id.VSub_DollarName '$fullname')}
                            )
                        )
                        (command.ControlFlow
                          token: <Id.ControlFlow_Return return>
                          arg_word: {<1>}
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DPipe]
                      children: [
                        (C {<_Dbg_set_source_array_var>} {(DQ ($ Id.VSub_DollarName '$filename'))})
                        (command.ControlFlow
                          token: <Id.ControlFlow_Return return>
                          arg_word: {($ Id.VSub_QMark '$?')}
                        )
                      ]
                    )
                  ]
                  spids: [1789 1803]
                )
              ]
            )
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
        )
    )
    (command.ShFunction
      name: _Dbg_set_source_array_var
      body: 
        (BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DParen
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_NEqual
                      left: {($ Id.VSub_Pound '$#')}
                      right: {<Id.Lit_Digits 1>}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<1>}
                )
              ]
            )
            (C {<typeset>} {<Id.Lit_VarLike 'filename='> (DQ ($ Id.VSub_Number '$1'))})
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_z
                      child: {($ Id.VSub_DollarName '$filename')}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:fullname)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (braced_var_sub
                        token: <Id.VSub_Name _Dbg_file2canonic>
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName '$filename')})
                      )
                    }
                  spids: [1938]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_z
                      child: {($ Id.VSub_DollarName '$fullname')}
                    )
                )
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: 
                        {
                          (braced_var_sub
                            token: <Id.VSub_Name _Dbg_filenames>
                            bracket_op: 
                              (bracket_op.ArrayIndex
                                expr: {($ Id.VSub_DollarName '$filename')}
                              )
                          )
                        }
                    )
                )
                (BraceGroup
                  children: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:fullname)
                          op: assign_op.Equal
                          rhs: {(DQ ($ Id.VSub_DollarName '$filename'))}
                          spids: [1975]
                        )
                      ]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_z
                      child: {($ Id.VSub_DollarName '$fullname')}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_source_array_var)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (braced_var_sub
                        token: <Id.VSub_Name _Dbg_filenames>
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName '$fullname')})
                      )
                    }
                  spids: [1999]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              expr: 
                                (bool_expr.Unary
                                  op_id: Id.BoolUnary_n
                                  child: {($ Id.VSub_DollarName '$_Dbg_set_highlight')}
                                )
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:_Dbg_highlight_array_var)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (DQ 
                                (braced_var_sub
                                  token: <Id.VSub_Name _Dbg_source_array_var>
                                  suffix_op: 
                                    (suffix_op.PatSub
                                      pat: {<_Dbg_source_>}
                                      replace: {<_Dbg_highlight_>}
                                      replace_mode: Id.Undefined_Tok
                                    )
                                )
                              )
                            }
                          spids: [2023]
                        )
                      ]
                    )
                  ]
                  spids: [2008 2020]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:_Dbg_source_array_var)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (braced_var_sub
                        token: <Id.VSub_Name _Dbg_filenames>
                        bracket_op: (bracket_op.ArrayIndex expr:{($ Id.VSub_DollarName '$fullname')})
                      )
                    }
                  spids: [2038]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_z
                      child: {($ Id.VSub_DollarName '$_Dbg_source_array_var')}
                    )
                )
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<2>}
                )
              ]
            )
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
        )
    )
  ]
)