Using Turbo 8 via turbo-rails 2.0.11: autofocus did not work for me. It always moves the cursor to the start of the line in Firefox. Also, only one input field can have autofocus, but maybe I should have tried adding an ID for this.

The turbo_permanent attribute works great. I am using #search to automatically submit after a certain timeout, triggering Turbo.visit(url, { action: "replace" }) to also update the GET params in the URL, no POST request needed.

  <%= form.text_field :test_name,
                   placeholder: "Filter by test name...",
                   value: params[:test_name] || session[:test_name],                          
                   data: {
                     turbo_permanent: true,
                     action: "input->search-form#search keypress->search-form#submitOnEnter"
                   } %>