Darshan Lukhi

Many patterns are changed in [logstash patterns](https://github.com/logstash-plugins/logstash-patterns-core/tree/master/patterns). So it's greatful if you can just update patterns once.

Can not parse "," value in EVAL function argument

1

Steps to Reproduce: ``` import splparser.parser EVAL xrefs = mvjoin(mvzip('plugin.xrefs{}.type', 'plugin.xrefs{}.id', " #"), ",") ```