[JeffMorrow]

My partner and I play that when opener bids a suit at the one-level and the first response is a suit at the one-level, opener MUST ensure that responder get a second opportunity to bid UNLESS responder previously passed. So, for example, after 1D, (P), 1H, (P), opener may not pass, but after P, (P), 1D, (P), 1H, (P), opener may pass. This is (or at least used to be) standard, I believe.

We also play that a jump shift by a hand that has not previously passed shows a weak hand with a long suit and is preemptive and so definitely not forcing. So, for example, after 1D, (P), 2H, (P), opener may pass. I believe that this is a common understanding. But what if responder previously passed? For example, P, (P), 1D, (P), 2H, (P). Obviously, opener may pass; responder didi not have the strength to open. But should opener interpret this as weak and preemptive or as highly encouraging? If it is preemptive, is there a way for responder to show just under opening strength? Part of my problem here is that I do not see any great value in a preemptive bid when both opponents have already passed, but I do see value in way to let opener know that game may be possible.