add the regex named pattern method and http_version for future use
It went from expected
<nb_pageviews>50</nb_pageviews> to processed
<nb_pageviews>49</nb_pageviews>. So what's happening is that one of the request was not tracked.
Here are the log files used for this test: https://github.com/piwik/piwik/tree/master/tests/resources/access-logs
Maybe it works if you replace
PS: ticket is http://dev.piwik.org/trac/ticket/5261
feel free to re-open this pull request when you get a chance to solve the problem, thanks!