error handling in pecl extensions (was Re: intl/resourcebundle)

Hi! As stas pointed out to me, intl does not use exceptions for error handling. As a matter of fact, there seems to be a completely separate "error handling" within intl. Unfortunately, I didn't find any "best practices" or "agreements" on how error conditions in pecl extensions should be handled. For me - in my newbie ignorance -, using neither extensions nor the classic error handling seems illogical. It forces the user to recreate specific error handling - as it does not use the "available" tools. Is there any documentation that would help me understand that decision? Was there any discussion on allowing classic php_errors and/or exceptions by ini configuration? Would there probably be a need for a inter-extension ini indicating to extensions, if php_errors and/or exceptions are wanted by the user? Regards HPO