Bug 133599 [FieldAssist] Left and right arrow keys should work with open proposals list
I20060328-0010, worked in M5 In the Find/Replace dialog, enable regex, then type something into the Find field and invoke content assist. Pressing the left or right arrow key now closes the proposals popup. The list should not be closed, but the caret should be moved and the proposals should be recalculated for the new caret position.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
* 
		 * @return the return code
		 * 
		 * @see org.eclipse.jface.window.Window#open()
		 */
		public int open() {
			int value = super.open();
			if (popupCloser == null) {
				popupCloser = new PopupCloserListener();
			}
			popupCloser.installListeners();
			showProposalDescription(getSelectedProposal().getDescription());
			return value;
		}
		/**
		 * Closes this popup. This method is extended to remove the control
		 * listener.
		 * 
		 * @return <code>true</code> if the window is (or was already) closed,
		 *         and <code>false</code> if it is still open
		 */
		public boolean close() {
			popupCloser.removeListeners();
			if (infoPopup != null) {
				infoPopup.close();
			}
			return super.close();
		}
		/*
		 * Get the proposals from the proposal provider. The provider may or may