Manually set rubocop config

[elstgav]

I'm looking to add this option to support the SublimeLinter plugin I'm writing (see related issue). The main problem I've run into is that while editing your files, SublimeLinter will create a temporary copy to lint. Since the tmp file is in a separate directory, rubocop won't correctly determine the config location (the slim config, however, is manually set).

This would also allow users to keep a separate rubocop configuration for their slim files if they so choose. We may want to add an option to hardcode the rubocop config as well in slim-lint.yml.

Looking for guidance on the feasibility of this approach as well as how to properly test this feature. I would imagine it would be useful to integrate with other linters (e.g. jshint, scss-lint) for the other languages slim supports, so this approach may not be feasible as the number grows.

[sds]

Hey @elstgav, thanks for your work in integrating slim-lint with Sublime.

We had a similar request in the haml-lint project, and my issue was that exposing this as a top-level command line flag seemed like overkill when you could easily isolate support for this to just the RuboCop linter via an environment variable. I didn't hear back that this wouldn't work, but it sounds like it would.

Would it be possible for you to restructure this to use an environment variable instead? (I'm not familiar with the SublimeLinter ecosystem).

On top of that, could you write a test that verifies the functionality? I'd like to maintain 100% code coverage for this project, and currently no test actually exercises the setting of the config file.

[elstgav]

Good idea. I've been a bit busy, I hope to make some progress on it this week.

[elstgav]

Reworked this in #6