Bug 66234 [projection] Revert file sometimes does not display the imports
I was able to recreate the scenario, I have a Java file in a Java project as /* * Created on Jun 8, 2004 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates */ package com; import java.net.URL; import java.util.Date; /** * @author admin * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates */ public class Test { Date xyz; URL abc; } I open it in the editor, delete the keyword 'package' so that that line only says com. Now I right click on file and select 'Revert File'. Notice that the imports list disappears. This is in M9.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/folding/DefaultJavaFoldingStructureProvider.java
Position p= model.getPosition(a);
							if (p != null && !position.equals(p)) {
								p.setOffset(position.getOffset());
								p.setLength(position.getLength());
								updates.add(a);
							}
							x.remove();
							break;
						}
					}
										
					if (annotations.isEmpty())
						previous.remove(element);
				}
			}
			
			e= previous.values().iterator();
			while (e.hasNext()) {
				List list= (List) e.next();
				int size= list.size();
				for (int i= 0; i < size; i++)
					deletions.add(list.get(i));
			}
			
			match(model, deletions, additions, updates);
			
			Annotation[] removals= new Annotation[deletions.size()];
			deletions.toArray(removals);
			Annotation[] changes= new Annotation[updates.size()];
			updates.toArray(changes);