only allow valid pagenames

	Ideally the dokuwiki XMl-RPC API would have a cleanID
	call to aquire a valid ID

Author: Michael Klier

plugin/dokuvimki.vim

@@ -211,6 +211,10 @@ class DokuVimKi:
         editing or switches to the correct buffer if the is open already.
         """
 
+        if wp.find(' ') != --1:
+            print >>sys.stderr, "Pagenames cannot contain whitespace. Please use valid pagenames only!\nSee http://dokuwiki.org/pagename" 
+            return
+
         if self.diffmode:
             self.diff_close()