Grok -> patterns_dir not working in logstash 1.5.0

... in the same way as it did in 1.4.2

I had a complex directory structure in 1.4.2, as I noticed grok would aggregate the patterns in alphabetical order.

This gave me the ability to build a directory structure like:

grok {
patterns_dir => [
"/home/elk/ELK/logstash-1.4.2/patterns",
"/home/elk/ELK/logstash-1.4.2/config/patterns",
"/home/elk/ELK/logstash-1.4.2/proc",
"/home/elk/ELK/logstash-1.4.2/services"
]
[...]
}

A pattern could be defined in many places, and the one found in the last folder, services, would be the one used.

However by keeping the config identical and shifting the binaries to point to 1.5.0, I get the following error:
The error reported is:
pattern %{MYTEST} not defined

I removed the whole directory structure, aggregated all the pattern files into 1, which I dropped into /home/elk/ELK/logstash-1.5.0/vendor/bundle/jruby/1.9/gems/logstash-patterns-core-0.1.10/patterns/grok-my-patterns

and now it works.

Anyone else noticed the change of behavior?