Goal:
    A : Type  Aeq : ReflectEq A  x : A  y : A  H : reflectProp (x = y) true
  ============================
   (option_extends (Some x) (Some y))


DEBUG:Going to execute:
<coq-core.plugins.ltac::replace@0> $1 $2 $3 $4
DEBUG LTAC Evaluated term: x