Add feature to stop budification if an element already has dir attribute

lib/bidify/bidifier.rb

@@ -29,6 +29,8 @@ def bidify_recursively(html_node, options = {})
       seen_the_first_bidifiable_element = false
 
       html_node.children.each do |child_node|
+        next if stop_recursion_at?(child_node)
+
         bidify_recursively(child_node)
 
         if (options[:root] || seen_the_first_bidifiable_element) && @bidifiable_tags.include?(child_node.name)
@@ -42,5 +44,9 @@ def bidify_recursively(html_node, options = {})
     def actual_content?(node)
       node.element? || (node.text? && !node.blank?)
     end
+
+    def stop_recursion_at?(node)
+      node.has_attribute?('dir')
+    end
   end
 end

spec/html_string_bidifier_spec.rb

@@ -179,6 +179,32 @@
 
       expect(actual_output).to eq expected_output
     end
+
+    it 'stops recursive bidification on an element with explicit dir attribute' do
+      input = <<~HTML
+        <div>
+          <p>Item 1</p>
+          <div dir="ltr">
+            <p>Item 2</p>
+            <p>Item 3</p>
+          </div>
+        </div>
+      HTML
+
+      expected_output = <<~HTML
+        <div dir="auto">
+          <p>Item 1</p>
+          <div dir="ltr">
+            <p>Item 2</p>
+            <p>Item 3</p>
+          </div>
+        </div>
+      HTML
+
+      actual_output = bidifier.apply(input)
+
+      expect(actual_output).to eq expected_output
+    end
   end
 
   it 'bidifies a table with :with_table_support option' do