(command.AndOr
  ops: [Op_DAmp]
  children: [
    (command.FuncDef
      name: _gendiff
      body: 
        (command.BraceGroup
          children: [
            (command.Assignment
              keyword: Assign_Local
              pairs: [
                (assign_pair
                  lhs: (lhs_expr.LhsName name:cur spids:[13])
                  op: Equal
                  spids: [13]
                )
                (assign_pair
                  lhs: (lhs_expr.LhsName name:prev spids:[15])
                  op: Equal
                  spids: [15]
                )
                (assign_pair
                  lhs: (lhs_expr.LhsName name:words spids:[17])
                  op: Equal
                  spids: [17]
                )
                (assign_pair
                  lhs: (lhs_expr.LhsName name:cword spids:[19])
                  op: Equal
                  spids: [19]
                )
              ]
              spids: [11]
            )
            (command.AndOr
              ops: [Op_DPipe]
              children: [
                (C {(_init_completion)} {(-o)} {(SQ <'@(diff|patch)'>)})
                (command.ControlFlow token:<ControlFlow_Return return>)
              ]
            )
            (command.AndOr
              ops: [Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.BoolBinary
                      op_id: BoolBinary_eq
                      left: {($ VSub_DollarName '$cword')}
                      right: {(1)}
                    )
                )
                (C {(_filedir)} {(-d)})
              ]
            )
          ]
          spids: [8]
        )
      spids: [4 7]
    )
    (C {(complete)} {(-F)} {(_gendiff)} {(gendiff)})
  ]
)