I appreciate your replies, and also the link to felicity conditions.
2.
If Peter utters the sentence without the intention to keep the promise, or if eventually he does not keep it, then although something is not in order with the utterance, the problem is not that the sentence is false : it is rather " unhappy ", or " infelicitous ", as Austin also says in his discussion of so-called felicity conditions.
मोबाइल