Thanks everybody for discussion. It took only 6 days between noticing the problem [1] and finding the cause [2]. I wish the process didn't require so intensive communication, because without holidays I'd probably gave up on this. =) It's good that I know English. 1. https://bitbucket.org/techtonik/python-pager/changeset/3e3d0700ba5f 2. https://bitbucket.org/techtonik/python-pager/changeset/ffe9da2d5316 -- anatoly t. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-ideas/attachments/20120115/7422433a/attachment.html>