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/internal/core/refactoring/UndoManager.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see IUndoManager#shutdown()
	 */
	public void shutdown() {
	}
	/*
	 * (Non-Javadoc) Method declared in IUndoManager.
	 */
	public void flush() {
		flushUndo();
		flushRedo();
	}
	private void flushUndo() {
		if (fUndoChanges != null) {
			sendDispose(fUndoChanges);
		}
		fUndoChanges= new Stack();
		fUndoNames= new Stack();
		fireUndoStackChanged();
	}
	private void flushRedo() {
		if (fRedoChanges != null) {
			sendDispose(fRedoChanges);
		}
		fRedoChanges= new Stack();
		fRedoNames= new Stack();
		fireRedoStackChanged();