Flexibility of patterns of user defined directories to clean? Full regExp/wildcards possible?

As you know users can define additional directories which should be erased.

How flexible are these directory definitions?

Assume I want to clean all /log/ folders in the directory tree begging with the base directory

"D.\data\2011\". Can Iwrite then:

D:\data\2011\*\log\*

Mind the first, embedded asteriks "*" !!! In other words are full rexexp/wildcards possible?

Or do I really have to write all sub dirs like.

D:\data\2011\test1\log\*

D:\data\2011\test22\log\*

D:\data\2011\test\prev\log\*

...

D:\data\2011\backup\first\log\*

D:\data\2011\pro\log\*

Thomas