What if Obi-Wan told Luke the truth about his father?

What if Obi-Wan wasn't a lying piece of Bantha fodder?

[michellechen]

in a Star Wars fanfic I read called time to tell the truth ben told Luke the truth and when they rescued leia Luke saw Vader and Ben fighting and called out to Vader at first Vader thought Luke is calling to Ben and is a bout to kill Ben but stop when Luke called to him father don’t kill Ben and Ben was able to escape alive while luke stay behind and Vader and Luke hug.

[myaberger]

Luke how did my father die Obi-Wan he did it but you are meant he think he did your father turn to evil and become Darth Vader