I was trying to host some files on my pygopherd server and found that if
the directory contained a file with two dots in a row wouldnt load.

I found the function below in handlers/base.py was causing the problem.
before it was searching for ".." in the selector, instead i have it
searching for ../ and /.. now. below is the new function i made, just
wondering if i'm after introducing more bugs now?

     def isrequestsecure(self):
         """An auxiliary to canhandlerequest.  In order for this handler
         to be selected for handling a given request, both the securitycheck
         and the canhandlerequest should be invoked.  The securitycheck is
         intended to be a short, small, quick check -- usually not even
         looking at the filesystem.  Here is a default.  Returns true
         if the request is secure, false if not.  By default, we eliminate
         ./, ../, and //  This is split out from canhandlerequest becase
         it could be too easy to forget about it there."""
         return (self.selector.find("./") == -1) and \
                (self.selector.find("../") == -1) and \
                (self.selector.find("//") == -1) and \
                (self.selector.find(".\\") == -1) and \
                (self.selector.find("\\\\") == -1) and \
                (self.selector.find("\0") == -1) and \
                 (self.selector.find("/..") == -1)