- Patch #221964 by chx, dopry, webernet, moshe, webchick, justinrandall, flobruit
et al. Can you say 'registry'? Drupal now maintains an internal registry of all functions or classes in the system, allowing it to lazy-load code files as needed (reducing the amount of code that must be parsed on each request). The list of included files is cached per menu callback for subsequent loading by the menu router. This way, a given page request will have all the code it needs but little else, minimizing time spent parsing unneeded code.