Exception when parsing some desktop files

Earycandy has problems with some .desktop files where there are several commands in Exec separated by semicolons. E.g. on my system there is the file ~/.local/share/applications/gthumb-import.desktop which includes the following Exec line:
Exec=sh -c 'gvfs-mount -u "%U"; exec gthumb --import-photos'

Obviously ConfigParser returns such values not as a string but as a list. I have a fix in my branch at http://bazaar.launchpad.net/~phw/earcandy/fixes/revision/81 .

Without the fix the following exeption is thrown when scanning such a .desktop file:

TypeError: expected string or buffer
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/earcandy/windows/Watcher.py", line 49, in window_opened
    a = Application(pid, command, app_name, self.desktop_files, win.get_icon ())
  File "/usr/lib/pymodules/python2.6/earcandy/windows/Application.py", line 26, in __init__
    self.__match_desktop(desktop_files)
  File "/usr/lib/pymodules/python2.6/earcandy/windows/Application.py", line 34, in __match_desktop
    ex = a.get_exec_array()[0].lower()
  File "/usr/lib/pymodules/python2.6/earcandy/util/Freedesktop.py", line 90, in get_exec_array
    for r in re.finditer(p, self.get("Exec")):
  File "/usr/lib/python2.6/re.py", line 186, in finditer
    return _compile(pattern, flags).finditer(string)