Comment 2 for bug 581207

I can reproduce the bug, it is indeed pretty bad for users with a Turkish locale.
I can also confirm that the attached patch fixes the issue.

Note that this is the only place in the code where str.upper() is called, but there are several other places in the code where str.lower() is called, so this is potentially an issue for non unicode strings. This will need more investigation.

In the meantime I recommend the importance of this bug be set to high and the fix be merged as soon as possible.