VixTD, on Jul 6 2010, 10:09 AM, said:
The common meanings I come across are:
(1) both majors, about 6+ hcp
(2) no four-card or longer major, about 6+ hcp
(3) specifically four spades, denying four or more hearts, about 6+ hcp (in a system where 1♥ would promise four or more hearts and may also have four spades, 1♠ would promise five or more spades)
If your double promises four cards in one or other major and nothing in the other, what is opener supposed to do with a 4=2=2=5 or 2=4=2=5 minimum opener after the auction:
1♣ - (1♦) - X - (2♦) ?
This discussion of what the double meant is really not off track.
It was a poor idea, but not ridiculous --with those majors ---for West to (as he said) wait for further developments. But, since we have decided that neg doubles are not alerted, he can't really ask for fear of giving UI himself.
Further off-track, then ---since neg doubles are treated so many different ways, perhaps they should be alerts, so one may ask at one's turn as a routine.
Anyway, though I have sympathy for West's quandry, if he had just bid 3D the first time, this would put the opener in a bad spot with his actual hand --and also with any hand which had four spades. 3D would also have eliminated the whole issue of UI, since he would now be out of the auction.
Got to roll back to 4C, I think (back on-track).
..P...1♣..1♦...X
..P...2♣..2♦..3♣
.3♦..4♣..P(H).P
.4♦....P....P....P