Severe: Rubocop silently accepts complete garbage as configuration

[e2]

Rubocop shows no error, even if the config file is complete garbage (anything that's a valid UTF-8 stream at least).

How to reproduce:

1. echo '"' > bad.yml
2. rubocop -c bad.yml

Expected: e.g. "Psych::SyntaxError: (): found unexpected end of stream"
Actual: no errors

Introduced by commit: 57aadf2

This would ultimately solve the problem (somewhat related):
#1151

So, while Rubocop is extremely fussy about Ruby code, Rubocop's config files have a "get out of jail" card.

Oh the irony :D

(I marked this as severe because of how much time people can waste reproducing and reporting issues)

[bbatsov]

I seem to recall us fixing this recently, but I can't find the related PR.

[bquorning]

I think it might be fixed by #1504

[bquorning]

Or rather #1511.

[bbatsov]

Thanks, @bquorning!

[e2]

😍 Thanks, @bquorning!