Reopened Unassigned: Feature request: Auto-triggers on forall statements [103]

Dafny's new auto-trigger feature is quite useful, but it leaves out a useful case: forall statements. In the attached file, no trigger is generated for the forall statement, even though there's a fairly obvious trigger (IsLessThanSuccessor(i)).

It would be nice if the auto-trigger feature could also work on forall statements. I had a more complicated instance in real code where a lemma's verification was timing out with no explanation as to why, and it was only via the axiom profiler that I learned it was due to a forall statement with no triggers.

predicate IsLessThanSuccesor(i:int)
{
i < i + 1
}

lemma LemmaWithoutTriggerOnForallStatement()
{
forall i
ensures IsLessThanSuccesor(i);
{
}
}