code: def global_include(self, pattern):
          
          if self.allfiles is None:
              self.findall()
          match = translate_pattern(os.path.join('**', pattern))
          found = [f for f in self.allfiles if match.match(f)]
          self.extend(found)
          return bool(found)
docs: Include all files anywhere in the current directory that match the
          pattern. This is very inefficient on large file trees.