too much decrease of brace identation

[mdaisuke]

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: http://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: http://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

Go's brace auto identation looks workng a little wrong.
like below

Then I read some code in atom/language-go and found the setting of increaseIndentPattern is precisely set.
https://github.com/atom/language-go/blob/master/settings/language-go.cson#L4

So there might be some wrong config applied?

But it works okay if copy and paste below to config.cson of Atom editor.

".go.source":
  editor:
    commentStart: "// "
    decreaseIndentPattern: "^\\s*(\\bcase\\b.*:|\\bdefault\\b:|}[),]?|\\)[,]?)$"

like this

Steps to Reproduce

see gifs above.

Versions

Atom    : 1.15.0
Electron: 1.3.13
Chrome  : 52.0.2743.82
Node    : 6.5.0

�apm  1.15.3
npm  3.10.5
node 4.4.5 x64
python 3.6.0
git 2.11.0

Additional information

I tried this on safe mode and factory default, but is reproduced.

I have no idea where something's working wrong, so if you have some advice about where I should check on this to me, I'll try to fix.