(AndOr OP_AND_IF
  (FunctionDef _gendiff []
    (List
      (= scope=<EAssignScope.LOCAL 0> flags=0 words=[{[LIT_CHARS cur]}, {[LIT_CHARS prev]}, {[LIT_CHARS words]}, {[LIT_CHARS cword]}] bindings=[])
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS _init_completion]} {[LIT_CHARS -o]} {[SQ <LIT_CHARS "@(diff|patch)">]}        )
        (Com {[LIT_CHARS return]}        )
      )
      (AndOr OP_AND_IF
        (DBracket {B2 BINARY_INT_EQ {[VarSub cword]} {[LIT_CHARS 1]}})
        (Com {[LIT_CHARS _filedir]} {[LIT_CHARS -d]}        )
      )
    )
  )
  (Com {[LIT_CHARS complete]} {[LIT_CHARS -F]} {[LIT_CHARS _gendiff]} {[LIT_CHARS gendiff]}  )
)