baa88412b9
The diff parser code was rewritten for clarity and speed and now handles a couple of ugly cornercases, like SVN's property change output and single change chunks, much better. Since the path parsing was unified as well, the SCM interface gained a new method `getPathStripLevel()` which determines how many path components need to be shoven off a file name for the SCM to form a valid path in the workspace (similar to patch(1)'s --strip option). Fixes issue 627. Automated tests follow.