fragment caching -- expiring entire folders

Hi,

I am using the file system store, and I need to expire entire folders
on certain actions (i am trying to avoid the regexp key), but this is
not supported.
Below is my patch

Index: actionpack/lib/action_controller/caching.rb

Thanks for patch, but would you mind submitting it to the Rails Trac?
It'd probably get better visibility there as a patch.

See http://dev.rubyonrails.org/wiki/ for more info.