pattern_capture token filter does not throw error with patterns missing.

[jtreher]

Just a simple note. When creating a custom_filter, the pattern_capture token filter does not throw an error with patterns missing. Instead, it must default to some behavior. I had mistakenly used "pattern" with a single string rather than "patterns" with an array.

https://gist.github.com/jtreher/6766911

{
"settings": {
"default" : {},
"analysis": {
"filter": {
"sample":{
"type":"pattern_capture",
"pattern":"(([a-z]+)(\d*))"

            }
        }
    }
}

}

[s1monw]

good call - I will push a fix and throw an ESIllegalArgumentException :)