Bug 179551 [Undo] DefaultOperationHistory should write exceptions to log when running in Eclipse
I20070323-1616 DefaultOperationHistory#handleNotificationException(..) should write exceptions to the log when running in Eclipse. Bugs like 176644 are easy to miss when exceptions only appear on the console.
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/operations/DefaultOperationHistory.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.operations.IOperationHistory#undo(org.eclipse.core.commands.operations.IUndoContext,
	 *      org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 */
	public IStatus undo(IUndoContext context, IProgressMonitor monitor,
			IAdaptable info) throws ExecutionException {
		Assert.isNotNull(context);
		IUndoableOperation operation = getUndoOperation(context);
		
		if (operation == null) {
			return IOperationHistory.NOTHING_TO_UNDO_STATUS;
		}
		
		if (!operation.canUndo()) {
			if (DEBUG_OPERATION_HISTORY_UNEXPECTED) {
				Tracing.printTrace("OPERATIONHISTORY", 
						"Undo operation not valid - " + operation); 
			}
			return IOperationHistory.OPERATION_INVALID_STATUS;
		}
		return doUndo(monitor, info, operation);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.operations.IOperationHistory#undoOperation(org.eclipse.core.commands.operations.IUndoableOperation,