Ensure wrap_with without a tag works.

lib/simple_form/wrappers/many.rb

@@ -16,6 +16,7 @@ module SimpleForm
         @namespace  = namespace
         @components = components
         @defaults   = defaults
+        @defaults[:tag]   = :div unless @defaults.key?(:tag)
         @defaults[:class] = Array.wrap(@defaults[:class])
       end
 

test/form_builder/hint_test.rb

@@ -109,7 +109,7 @@ class HintTest < ActionView::TestCase
   test 'hint with custom wrappers works' do
     swap_wrapper do
       with_hint_for @user, :name, :hint => "can't be blank"
-      assert_select 'span.omg_hint', "can't be blank"
+      assert_select 'div.omg_hint', "can't be blank"
     end
   end
 end

test/form_builder/wrapper_test.rb

@@ -84,7 +84,7 @@ class WrapperTest < ActionView::TestCase
       assert_select "section.custom_wrapper div.another_wrapper input.string"
       assert_no_select "section.custom_wrapper div.another_wrapper span.omg_error"
       assert_select "section.custom_wrapper div.error_wrapper span.omg_error"
-      assert_select "section.custom_wrapper > span.omg_hint", "cool"
+      assert_select "section.custom_wrapper > div.omg_hint", "cool"
     end
   end
 

test/support/misc_helpers.rb

@@ -42,7 +42,7 @@ module MiscHelpers
       b.wrapper :error_wrapper, :tag => :div, :class => "error_wrapper" do |be|
         be.use :error, :wrap_with => { :tag => :span, :class => "omg_error" }
       end
-      b.use :hint, :wrap_with => { :tag => :span, :class => "omg_hint" }
+      b.use :hint, :wrap_with => { :class => "omg_hint" }
     end
   end