http://trailblazer.to/gems/cells/cells4.html
Cells per default does not escape HTML. However, you may run into problems when using Rails helpers. Internally, those helpers often blindly escape. This is not Cells’ fault but a design flaw in Rails.
I know this is not a bug, but want to provide a option to do html escaping by default.
Because set html escape for every input data is difficult and will cause security problem if forget.