Open brace in regex causes auto-indent error #658

This Issue is very similar to #646.

Steps to Reproduce

1. In Atom, create a new Javascript file or edit an existing one.
2. Add the following lines of code:

var matches = line.match(/{/);
console.log("Javascript line to follow");

2. Select that code, and/or all code in the file.
3. Autoindent.

Expected behavior:
These two lines of code are indented to the same level, whatever that may be, as shown above.

Actual behavior:
The second line, and all which follow, are indented one extra level.

Edit by @rsese to add screenshot

Reproduces how often:
Every time.

Versions

atom --version:
Atom : 1.23.2
Electron: 1.6.15
Chrome : 56.0.2924.87
Node : 7.4.0
apm --version:
apm 2.4.3
npm 6.2.0
node 10.2.1 x64
atom 1.40.1
python
git 2.15.0.windows.1
visual studio 2015

Windows 10