Bug 77649 'Refactor -> Undo' enabled after consecutive change
I200411022000 Having: package test2; public class A { public C c= new C(); public void foo() { } } package test2; public class B { public void bar() { new A().foo(); } } package test2; public class C { } and: - open all 3 CUs - move A#foo() to C - remove 'a' from 'new A().c.foo(a);' in B - save B - Refactor -> Undo -> lost parenthesis in B because undo did no longer match
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/core/refactoring/PerformChangeOperation.java
if (fUndoChange != null && undoInitialized) {
						Change ch= fUndoChange;
						fUndoChange= null;
						ch.dispose();
					}
					fUndoChange= null;
					throw e;
				} catch (RuntimeException e) {
					if (fUndoManager != null)
						fUndoManager.flush();
					if (fUndoChange != null && undoInitialized) {
						Change ch= fUndoChange;
						fUndoChange= null;
						ch.dispose();
					}
					fUndoChange= null;
					throw e;
				} finally {
					monitor.done();
				}
			}
		};
		ResourcesPlugin.getWorkspace().run(runnable, pm);
	}
	
	private boolean createChange() {
		return fCreateChangeOperation != null;
	}
}