At 06:14 AM 12/30/2008 -0600, firstname.lastname@example.org wrote:
Paul demonstrates the shortcoming of commonprefix:
>>> os.path.commonprefix(["foo\\bar\\baz", "foo/bar/boink"]) 'foo'
With the patch in issue4755:
>>> import ntpath >>> ntpath.commonpathprefix(["foo\\bar\\baz", "foo/bar/boink"]) 'foo\\bar'
But it doesn't handle the fact that Windows paths are case-insensitive, or that Posix paths can have symlinks... or that one path might be relative and another absolute...
As soon as you move away from being a string operation, you get an endless series of gotchas... none of which are currently documented.