Send the li before content only once

Author: blocknotes

examples/random_content.html

@@ -63,7 +63,7 @@ <h1>Random content <small>(with various elements and styles)</small></h1>
       Li 2
       <ol>
         <li>Li 2 - 1</li>
-        <li>Li 2 - 2</li>
+        <li>Text that is <b>bold</b> and <i>italic</i> also.</li>
         <li>Li 2 - 3</li>
       </ol>
     </li>

examples/random_content.pdf

@@ -106,7 +106,8 @@ def apply_tag_open_styles(element)
     end
 
     def prepare_text(content)
-      text = context.before_content ? ::Oga::HTML::Entities.decode(context.before_content) : ''
+      before_content = context.before_content
+      text = before_content ? ::Oga::HTML::Entities.decode(before_content) : ''
       return (@last_text = text + content) if context.white_space_pre?
 
       content = content.lstrip if @last_text[-1] == ' ' || @last_tag_open

lib/prawn_html/document_renderer.rb

@@ -13,7 +13,9 @@ def block?
       end
 
       def before_content
-        @counter ? "#{@counter}. " : "#{@symbol} "
+        return if @before_content_once
+
+        @before_content_once = @counter ? "#{@counter}. " : "#{@symbol} "
       end
 
       def block_styles