logstash/logstash — pull request #519 by dpb587 (2013-06-16 23:56:45+00:00)
Title: Add support for case-insensitive patterns with grep filter.

I ran into a case where case-insensitivity would be very convenient with `grep`. It adds an `ignore_case` setting. See the updated `spec/filters/grep.rb`.

I'd appreciate feedback if you have better alternatives or suggestions. Thank you for your time!