Tweak auto-completion to not auto-complete blocks, but do other things, like keywords

Is is possible to tweak the auto-completion feature of RubyMine to not automatically insert statements as bellow:

inject() { |, |  }

I do not want to completely disable auto-completion, I only want that upon typing "inj..." only the keyword "inject" is offered for auto-completion and not the whole block: inject() { |, |  }
When I only want to write something like inject(:+) I would prefer the { |, |  } block not being completed automatically.

Is this possible?
Thanks,