PEAR::DB, backends and assertExtension

In IRC someone pointed out that the error handling for database backends, which aren't available on the system, are not very sufficient. A few backends use assertExtension to detect whethere the module is available or not. But it doesn't return an Error object but only returns false which is not handled in the context (mysql) Some don't use assertExtension and fail when calling a non-existing connect function (msql) Some prepend the connect function call with '@' and the application then exits silently (mssql). Is someone working on this? If not, I can do it. My proposal would be to always return an pear error object then indicating that the backend is not availabble (but it should *not* 'DB_ERROR_NOT_FOUND' because this is already used the backend.php file is not available). I would suggest return a new error DB_ERROR_BACKEBD_NOT_FOUND. I hope I just haven't overseen an important thing :-) - Markus