Bug 125955 [Field Assist] - StringIndexOutOfBoundsException when backspacing out of a filter
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
* Show the proposal description in a secondary popup.
		 */
		private void showProposalDescription(String description) {
			
			if (infoPopup == null && description != null) {
				
				
				
				
				Runnable runnable = new Runnable() {
					public void run() {
						try {
							Thread.sleep(POPUP_DELAY);
						} catch (InterruptedException e) {
						}
						if (!isValid())
							return;
						getShell().getDisplay().syncExec(new Runnable() {
							public void run() {
								
								
								IContentProposal p = getSelectedProposal();
								if (p != null) {
									if (infoPopup == null) {
										infoPopup = new InfoPopupDialog(
												getShell());
										infoPopup.open();
									}
									infoPopup.setContents(p.getDescription());
									infoPopup.getShell().addDisposeListener(