[mattyb]

as opposed to a self-running Sinatra handler which has to be quite significantly modified to be Rack-compatible

Huh? Here's the `config.ru` that you need:

  $: << File.dirname(__FILE__)

  require 'app' #assuming app.rb
  run Sinatra::Application

Note that I have no stake in the verbosity claims, as it's not something I particularly care about. But I wouldn't consider this a significant modification.

[masklinn]

> Huh? Here's the `config.ru` that you need:

Really? I remember it being significantly more work in the past, like having to change the `require` and create a class around all the routing methods

If that's all which is required to make a Sinatra app into a good Rack citizen, then consider my previous assertion wrong and rescinded.