def __call__(self, pattern, repl, edit_summary, minor=False):
'Search the MediaWiki site with regular expression.'
Bot.__call__(self, edit_summary, minor)
self.pattern = pattern
self.repl = repl
for item in self.site.search('insource:/%s/' % pattern):
page = self._parse(item)
self._evaluate(page)
self._show_stat()
