[sighing]

Clarifications:

If a Ranger witnesses a character make any sort of physical attack other than the Primary Evil Attack, he will only learn that a "physical attack" was made, not the exact weapon type. If he witnesses a spell, he will learn what spell it was, and will also learn specific abilities like "Protected another player" for the paladin or "peeked a player" for the diviner.

If you are roleblocked, you won't be told specifically, and if you're using a limited ability (like Heal or a Wizard spell), it will still be used up.