path methods throw an exception if filename contains control chars

[adamesque]

path methods like path.basename and path.extname break if you pass them a filename that includes (legal) control characters like \r, because the splitPathRe regex uses . to match "any char", which excludes newlines.

Most people are sane enough not to use control chars in filenames, but on OS X, if you give a file or folder a custom icon, the custom icon data is stored in a hidden file called Icon\r.