I'd say the full quote to be, "Luckily, even without JVM support, the Scala compiler can perform tail-call optimisation in some cases. The compiler looks for ce

I'd say the full quote to be, "Luckily, even without JVM support, the Scala compiler can perform tail-call optimisation in some cases. The compiler looks for certain types of tail calls and translates them automatically into loops." This wouldn't be actual TCO in that case.