Bug 125955 [Field Assist] - StringIndexOutOfBoundsException when backspacing out of a filter
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
new DisposeListener() {
												public void widgetDisposed(
														DisposeEvent event) {
													infoPopup = null;
												}
											});
								}
							}
						});
					}
				};
				Thread t = new Thread(runnable);
				t.start();
			} else if (infoPopup != null) {
				
				infoPopup.setContents(description);
			}
		}
		/*
		 * Accept the current proposal.
		 */
		private void acceptCurrentProposal() {
			proposalAccepted(getSelectedProposal());
			close();
		}
		/*
		 * Request the proposals from the proposal provider, and recompute any
		 * caches. Repopulate the popup if it is open.
		 */
		private void recomputeProposals(String filterText) {