Warn if we're on Windows, and the user ends a line accepting a directory path with a backslash?
We have a couple of bugs (one even in our documentation, ooops) where users put a \ at the end of a path on Windows, and our config parser takes this as being a line continuation (see legacy/trac#4798 (moved) and legacy/trac#4426 (moved) ). Maybe we can do better here, by warning the user that their backslash implies line continuation if they're on Windows and have that set for one of the config options that point to a directory?