[development] RFC: info hook standardization

[John Wilkins]

On May 19, 2008, at 12:04 PM, Larry Garfield wrote:
>>> Themes get a special HOOK_theme() that is exactly like the module
>> version,
>>> but they do not get a corresponding alter.
>>>
>>
> If hook_theme() takes parameters, though, how does it get cached?

Each theme has its own theme registry cache.

And the params for hook_theme() are mostly used to provide context to  
the implementation. (i.e. "here's what the theme registry looks like  
so far. Bar is the active theme. We're asking foo about it because its  
a base theme for bar. etc.)

http://api.drupal.org/api/function/hook_theme/6