Loading namespaced classes with Symfony 1.4's autoloader?

Question

How to register namespaces (with PHP 5.3) in the Symfony 1.4 for the autoloader class feature (like the Symfony 2.0)?

Answer 1

Symfony uses the spl_autoload_register() function to register its own autoloader (sfAutoload).

You can register your own handler in the initialize() function of your Project/Application/Plugin. (whichever applies).

This is, for example, also what the Swift_Mailer plugin does: it registers its own autoloader when needed.