[development] Splitting hook_menu into hook_menu and hook_router

[Karoly Negyesi]

Hi,

We discussed renaming hook_menu and hook_router was a popular choice but  
as Gerhard says "I don't like to rename funtions just for the sake of  
renaming them" so it remained hook_menu .

However, looking at my brain dump at http://drupal4hu.com/node/28 tells me  
that further down the road a split is needed.

hook_router has these things:

-- path as primary key. We use this as an array key, so an alter hook can  
easily be provided.
-- access callback and arguments
-- page callback and arguments
-- map callback and arguments

hook_menu has these:

-- path. This is not unique. It's often requested that one path could have  
more than one visible link.
-- parent. If you omit this, it can be autogenerated but for setting it to  
some arbitrary value, let's say MENU_ROOT can be used to indicate a new  
menu. With this (or via other means if someone has a better idea) we can  
put links into any menu.
-- title.
-- weight.
-- expanded.

With path being unique in one and not unique in the other, I fail to see  
how the two could be unified. And I fail to see the point as well. We  
could lose path being an array key and make it a property again in  
hook_router as it was in old hook_menu but then what shall happen if  
someone defines two router items to the same path? This is a mess. The  
above is nice and clean.

Regards

NK