Possible issue with calling .color

[justin808]

For some reason, gems that include rainbow, like RuboCop, are failing when used with Ruby 2.2.1. This might be a bug with Ruby's 2.2.x refinements feature.

private method `color' called for "An error occurred while Style/MultilineOperationIndentation":String
/Users/justin/.rvm/gems/ruby-2.2.1@madrone/gems/rubocop-0.30.1/lib/rubocop/cop/team.rb:93:in `block (2 levels) in process_commissioner_errors'

UPDATE

Actually, I'm seeing this with Ruby 2.1.5. Researching.

[justin808]

This is caused when both "rainbow" and "colorize" gems are used. Avoid using both as both monkey patch String, and colorize puts a private method on String called color.

https://github.com/fazibear/colorize/blob/master/lib/colorize/instance_methods.rb

[justin808]

According to ku1ik/rainbow#25 (comment), the Rainbow gem does not automatically monkey patch string.

Reopening this issue in case this would be a nice enhancement for Rubocop.

[bbatsov]

So, your project is using colorize and this is somehow conflicting with rainbow, right? I'll have to check the code, but I think we dropped the monkey patching when we adopted rainbow 2.

[justin808]

@bbatsov We switched to avoid the issue, but it's a serious yak shaver for those that are not expecting it! I'm 100% the monkey patching is being done. I could also be that colorize is doing the monkey patching, and RuboCop is crashing due that.

[bbatsov]

Seems I was wrong - https://github.com/bbatsov/rubocop/blob/55a94a14fdccc8ac00419e04c47e18529378451c/lib/rubocop.rb#L6