Remove trailing slash from void HTML elements

actionpack/test/controller/renderer_test.rb

@@ -117,7 +117,7 @@ class RendererTest < ActiveSupport::TestCase
   end
 
   test "rendering with helpers" do
-    assert_equal "<p>1\n<br />2</p>", render(inline: '<%= simple_format "1\n2" %>')
+    assert_equal "<p>1\n<br>2</p>", render(inline: '<%= simple_format "1\n2" %>')
   end
 
   test "rendering with user specified defaults" do

actionview/CHANGELOG.md

@@ -94,4 +94,26 @@
 
     *Akhil G Krishnan*
 
+*   Removed the trailing slash from void HTML elements, except for elements included inside SVG tags.
+
+    The default value of the third argument (`open`) for `ActionView::TagHelper#tag` has been changed from `false` to `nil`.
+
+    For example, the following code now creates HTML without the trailing slash on the void element:
+
+    ```ruby
+    # Prints out `<br>`
+    tag("br")
+    ```
+
+    To force the trailing slash on the element, the third argument (`open`) can be provided with the value `false` as in:
+
+    ```ruby
+    # Prints out `<br />`
+    tag("br", nil, false)
+    ```
+
+    In order to preserve the legacy XHTML format, set `Rails.application.config.action_view.void_element_trailing_slash` to `true`.
+
+    *Antti Hukkanen*
+
 Please check [7-1-stable](https://github.com/rails/rails/blob/7-1-stable/actionview/CHANGELOG.md) for previous changes.

actionview/lib/action_view/base.rb

@@ -24,7 +24,7 @@ module ActionView # :nodoc:
   #
   #   <b>Names of all the people</b>
   #   <% @people.each do |person| %>
-  #     Name: <%= person.name %><br/>
+  #     Name: <%= person.name %><br>
   #   <% end %>
   #
   # The loop is set up in regular embedding tags <tt><% %></tt>, and the name is written using the output embedding tag <tt><%= %></tt>. Note that this

actionview/lib/action_view/helpers/asset_url_helper.rb

@@ -30,9 +30,9 @@ module Helpers # :nodoc:
     # Helpers take that into account:
     #
     #   image_tag("rails.png")
-    #   # => <img src="http://assets.example.com/assets/rails.png" />
+    #   # => <img src="http://assets.example.com/assets/rails.png">
     #   stylesheet_link_tag("application")
-    #   # => <link href="http://assets.example.com/assets/application.css" rel="stylesheet" />
+    #   # => <link href="http://assets.example.com/assets/application.css" rel="stylesheet">
     #
     # Browsers open a limited number of simultaneous connections to a single
     # host. The exact number varies by browser and version. This limit may cause
@@ -43,9 +43,9 @@ module Helpers # :nodoc:
     # "assets0.example.com", ..., "assets3.example.com".
     #
     #   image_tag("rails.png")
-    #   # => <img src="http://assets0.example.com/assets/rails.png" />
+    #   # => <img src="http://assets0.example.com/assets/rails.png">
     #   stylesheet_link_tag("application")
-    #   # => <link href="http://assets2.example.com/assets/application.css" rel="stylesheet" />
+    #   # => <link href="http://assets2.example.com/assets/application.css" rel="stylesheet">
     #
     # This may improve the asset loading performance of your application.
     # It is also possible the combination of additional connection overhead
@@ -69,9 +69,9 @@ module Helpers # :nodoc:
     #     "http://assets#{OpenSSL::Digest::SHA256.hexdigest(source).to_i(16) % 2 + 1}.example.com"
     #   }
     #   image_tag("rails.png")
-    #   # => <img src="http://assets1.example.com/assets/rails.png" />
+    #   # => <img src="http://assets1.example.com/assets/rails.png">
     #   stylesheet_link_tag("application")
-    #   # => <link href="http://assets2.example.com/assets/application.css" rel="stylesheet" />
+    #   # => <link href="http://assets2.example.com/assets/application.css" rel="stylesheet">
     #
     # The example above generates "http://assets1.example.com" and
     # "http://assets2.example.com". This option is useful for example if
@@ -88,9 +88,9 @@ module Helpers # :nodoc:
     #      end
     #    }
     #   image_tag("rails.png")
-    #   # => <img src="http://assets.example.com/assets/rails.png" />
+    #   # => <img src="http://assets.example.com/assets/rails.png">
     #   stylesheet_link_tag("application")
-    #   # => <link href="http://stylesheets.example.com/assets/application.css" rel="stylesheet" />
+    #   # => <link href="http://stylesheets.example.com/assets/application.css" rel="stylesheet">
     #
     # Alternatively you may ask for a second parameter +request+. That one is
     # particularly useful for serving assets from an SSL-protected page. The

actionview/lib/action_view/helpers/date_helper.rb

@@ -1161,7 +1161,7 @@ def prompt_option_tag(type, options)
         # Builds hidden input tag for date part and value.
         #
         #   build_hidden(:year, 2008)
-        #   => "<input type="hidden" id="date_year" name="date[year]" value="2008" autocomplete="off" />"
+        #   => "<input type="hidden" id="date_year" name="date[year]" value="2008" autocomplete="off">"
         def build_hidden(type, value)
           select_options = {
             type: "hidden",