Bug 132798 [Field Assist] - Pressing Backspace at offset 0 should not reload field assist popup
N20060322-0010. After migrating the Find/Replace dialog to the new field assist support I found the following blooper: pressing the Backspace key at offset 0 reloads the field assist popup. Test Case: 1. in a text editor press Ctrl+F 2. enable regex search 3. in the Find filed press Ctrl+Space 4. continuously press Backspace ==> each time the proposal list is reloaded.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
if (control != null && !control.isDisposed()) {
					control.removeListener(SWT.MouseDoubleClick, this);
					control.removeListener(SWT.MouseDown, this);
					control.removeListener(SWT.Dispose, this);
					control.removeListener(SWT.FocusOut, this);
					Shell controlShell = control.getShell();
					controlShell.removeListener(SWT.Move, this);
					controlShell.removeListener(SWT.Resize, this);
				}
			}
		}
		/*
		 * The listener we will install on the target control.
		 */
		private final class TargetControlListener implements Listener {
			
			public void handleEvent(Event e) {
				if (!isValid()) {
					return;
				}
				char key = e.character;
				
				
				if (e.type == SWT.Traverse) {
					
					
					
					
					
					if (key != 0) {