Fix raw tag (#1215)

* Fix raw tag

* Remove constant first to prevent warning

app/liquid_tags/raw_tag.rb

@@ -0,0 +1,8 @@
+module Liquid
+  class Raw < Block
+    remove_const(:FullTokenPossiblyInvalid) if defined?(FullTokenPossiblyInvalid)
+    FullTokenPossiblyInvalid = /\A(.*)#{TagStart}\s*(\w+)\s*#{TagEnd}\z/om
+  end
+
+  Template.register_tag("raw", Raw)
+end

app/views/pages/bounty.html.erb

@@ -81,7 +81,10 @@
                     'Antony Garand',
                     'Rahul PS',
                     'Gids Goldberg',
-                     ] %>
+                    'Mathieu Paturel',
+                    'Benoit Côté-Jodoin',
+                    'Nicolas Verdier',
+      ] %>
     <% hunters.shuffle.each do |hunter| %>
       <li><%= hunter %></li>
     <%end %>

spec/liquid_tags/raw_tag_spec.rb

@@ -0,0 +1,8 @@
+require "rails_helper"
+
+RSpec.describe Liquid::Raw, type: :liquid_template do
+  it "does not allow non whitespace characters in between the tags" do
+    invalid_markdown = '<img src="x" class="before{% raw %}inside{% endraw ">%}rawafter"onerror=alert(document.domain) '
+    expect { Liquid::Template.parse(invalid_markdown) }.to raise_error(StandardError)
+  end
+end