File 0004-CVE-2022-27777.patch of Package rubygem-actionview-5_1.30716

diff --git a/actionview/lib/action_view/helpers/tag_helper.rb b/actionview/lib/action_view/helpers/tag_helper.rb
index a6cec3f69c..9f5d90fc85 100644
--- a/actionview/lib/action_view/helpers/tag_helper.rb
+++ b/actionview/lib/action_view/helpers/tag_helper.rb
@@ -41,18 +41,25 @@ def initialize(view_context)
           @view_context = view_context
         end
 
-        def tag_string(name, content = nil, escape_attributes: true, **options, &block)
+        def tag_string(name, content = nil, **options, &block)
+          escape = handle_deprecated_escape_options(options)
           content = @view_context.capture(self, &block) if block_given?
+
           if VOID_ELEMENTS.include?(name) && content.nil?
-            "<#{name.to_s.dasherize}#{tag_options(options, escape_attributes)}>".html_safe
+            "<#{name.to_s.dasherize}#{tag_options(options, escape)}>".html_safe
           else
-            content_tag_string(name.to_s.dasherize, content || "", options, escape_attributes)
+            content_tag_string(name.to_s.dasherize, content || "", options, escape)
           end
         end
 
         def content_tag_string(name, content, options, escape = true)
           tag_options = tag_options(options, escape) if options
-          content     = ERB::Util.unwrapped_html_escape(content) if escape
+
+          if escape
+            name = ERB::Util.xml_name_escape(name)
+            content = ERB::Util.unwrapped_html_escape(content)
+          end
+
           "<#{name}#{tag_options}>#{PRE_CONTENT_STRINGS[name]}#{content}</#{name}>".html_safe
         end
 
@@ -85,6 +92,8 @@ def boolean_tag_option(key)
         end
 
         def tag_option(key, value, escape)
+          key = ERB::Util.xml_name_escape(key) if escape
+
           if value.is_a?(Array)
             value = escape ? safe_join(value, " ".freeze) : value.join(" ".freeze)
           else
@@ -106,8 +115,29 @@ def respond_to_missing?(*args)
             true
           end
 
-          def method_missing(called, *args, &block)
-            tag_string(called, *args, &block)
+          def handle_deprecated_escape_options(options)
+            # The option :escape_attributes has been merged into the options hash to be
+            # able to warn when it is used, so we need to handle default values here.
+            escape_option_provided = options.has_key?(:escape)
+            escape_attributes_option_provided = options.has_key?(:escape_attributes)
+
+            if escape_attributes_option_provided
+              ActiveSupport::Deprecation.warn(<<~MSG)
+                Use of the option :escape_attributes is deprecated. It currently \
+                escapes both names and values of tags and attributes and it is \
+                equivalent to :escape. If any of them are enabled, the escaping \
+                is fully enabled.
+              MSG
+            end
+
+            return true unless escape_option_provided || escape_attributes_option_provided
+            escape_option = options.delete(:escape)
+            escape_attributes_option = options.delete(:escape_attributes)
+            escape_option || escape_attributes_option
+          end
+
+          def method_missing(called, *args, **options, &block)
+            tag_string(called, *args, **options, &block)
           end
       end
 
@@ -236,6 +266,7 @@ def tag(name = nil, options = nil, open = false, escape = true)
         if name.nil?
           tag_builder
         else
+          name = ERB::Util.xml_name_escape(name) if escape
           "<#{name}#{tag_builder.tag_options(options, escape) if options}#{open ? ">" : " />"}".html_safe
         end
       end
-- 
2.36.0