0.6c: Directory Escaping

Mercurial 0.6c introduced a layout change that affects a small number of repositories. To avoid potential future name collisions, repositories containing directory names ending in ".i", ".d", or ".hg" (eg: etc/init.d/foo) need escaping. If you have a repository containing such directories, it can be updated with the following UNIX command: 

$ find .hg -type d -name "*.[di]" -exec echo mv {} {}.hg ";"

As of 0.7, hardlink cloning is now supported on Windows with NTFS and ActiveState Python. Because old versions cannot properly determine the link count of hardlinked files, using old versions of Mercurial on a new repository containing hardlinks may be dangerous.