fix bad regexp escaping

cccli/commands.py

@@ -40,7 +40,7 @@ class Commands(object):
             raise cmdBadName()
         # find right commands to call
         if argv[0] not in self:
-            matchlist = [ x for x in self if re.match("%s.+"%argv[0], x) ]
+            matchlist = [ x for x in self if re.match("%s.+"%re.escape(argv[0]), x) ]
             if len(matchlist) == 1:
                 argv[0] = matchlist[0]
             else: