slim in production env outputs html in ""

[jess]

I created a sample app https://github.com/jess/trail_test

If you run the app in dev env, everything works fine. If you run the app in production RAILS_ENV=production rails s you get html output instead of html.

[jess]

after some testing I found if you render the concept helper with == it works in production.

ie == concept("welcome/cell")

Maybe this is the correct way with slim, even though rendering partials and yields works with just a single =??