Empire Strikes Back script was always:
>Vader: Did he ever tell you what happened to you father?
<Luke: He told me enough…he told me you killed him..
>Vader: No….I am your father!
<Luke: *pic related*
NOT:
<Luke: He told me enough…he told me you killed him..
>Vader: Luke….I am your father!
Anyone who says othewise is a dingus