As you may have noticed, I've gone ahead and submitted the two patches I'd talked about earlier to the subversion trunk. I also submitted a minor patch to interpreter.py which cleans up stdout swapping (doctest.py deliberately doesn't provide a softspace attribute in the psuedo-stdout). I've also submitted to the issue tracker info on all the regression tests that I noted that failed under TrivialObjSpace. Note that I used Python2.2 under Win32 to do my testing, so there may be additional issues in other versions and/or platforms (specifically Unix). I've also gone ahead and submitted the script I worked up to do regression testing to subversion: (http://codespeak.net:8080/svn/user/rocco/tool/PyPyTest.py) Let me know what you think of it, and if I should make any changes. Slowly but surely, Rocco __________________________________________________________________ Try AOL and get 1045 hours FREE for 45 days! http://free.aol.com/tryaolfree/index.adp?375380 Get AOL Instant Messenger 5.1 for FREE! Download Now! http://aim.aol.com/aimnew/Aim/register.adp?promo=380455