[TSVN] "save as" (in log dialog) for a directory

Hi,

I wanted to get a copy of my project at a former revision, and (don't ask me why) tried to do it from the show log dialog (from repo-browser). So I select "save as', from the right-click menu of the revision, and a file dialog appears, strangely asking me for a file name... of course, when I validate, I get an error like "this is a directory".
So would it be possible to :
- display an error before the file dialog
- add the possibility to save an entire directory at a specific revision from the log dialog, or calling the checkout dialog filled with the revision?

Cheers

-- 
Charles Brossollet