How to exclude $PROJECT_ROOT/.idea from watched files in Jekyll?

Question

I am using RubyMine as my editor for a Jekyll project. RubyMine uses a control directory named .idea, and a file there, workspace.xml is constantly changing. My problem is that this causes many, many unnecessary builds. Is there any way to exclude this directory from that which the watcher is watching?

There are a couple of similar questions on StackOverflow, but they involve using the exclude configuration variable to exclude a directory within the source document directory (usually _posts, right?), and exclude them from conversion, not from watching.

Answer 1

exclude:
  - .idea

Will avoid .idea folder to be watched. Note, that it will also override default exclude