diff --git a/Lib/doctest.py b/Lib/doctest.py
index d47a60f..dd579fd 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -1327,7 +1327,7 @@
         self.tries += t
 
     __LINECACHE_FILENAME_RE = re.compile(r'<doctest '
-                                         r'(?P<name>[\w\.]+)'
+                                         r'(?P<name>.+)'
                                          r'\[(?P<examplenum>\d+)\]>$')
     def __patched_linecache_getlines(self, filename, module_globals=None):
         m = self.__LINECACHE_FILENAME_RE.match(filename)