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