Description of the problem or steps to reproduce

1. Open a scratch buffer (or any other buffer)
2. Insert a ( or a [ or a {
3. Observe that a )/]/} appears.

Specifications

This is primarily useful for lisp languages/plugins (I'm trying to make a parinfer plugin).
As of currently I will put in a ( and end up with a buffer whose contents are ()).
I traced the problem down to this.

As such, I only really care about it being possible to setlocal, but I can imagine some people wanting to do a :( in text as well.

Commit hash: 225927b
OS: MacOS
Terminal: iTerm2 (3.5 beta)