Is that different than what was there before? I thought we'd have to mark both ```full_title``` and ```app_name``` as #html_safe, independently, _before_ the concatenation. The reason being that I think a non-html_safe string combined with a html_safe string will produce escaped markup, and if you call #html_safe on such a string it won't do much. I might be wrong but I think that's what I was seeing before (see [previous experiment](https://github.com/tablexi/nucore-open/pull/5#discussion_r3251931))