Failed to `cd` into a folder whose name includes `'` and space simultaneously

[marsjane]

> mkdir aa's\ b
Creating `aa's b': succeeded.
dav:/Digital/> ls
Listing collection `/Digital/': succeeded.
Coll:   aa's b                                 0  Jul 17 09:30
dav:/Digital/> cd aa's b 
The `cd' command takes at most 1 argument:
  cd path : Change to specified collection
dav:/Digital/> cd aa's\ b 
Could not access /Digital/aa%27s%20b/ (not WebDAV-enabled?):
Did not find a collection resource.