Render milestone links as references

1 files changed, 21 insertions, 17 deletions

diff --git a/lib/banzai/filter/abstract_reference_filter.rb b/lib/banzai/filter/abstract_reference_filter.rb
index 6b200dc2017..36d8c12e2b3 100644
--- a/lib/banzai/filter/abstract_reference_filter.rb
+++ b/lib/banzai/filter/abstract_reference_filter.rb
@@ -60,27 +60,31 @@ module Banzai
       end
 
       def call
-        # `#123`
-        replace_text_nodes_matching(object_class.reference_pattern) do |content|
-          object_link_filter(content, object_class.reference_pattern)
-        end
+        if object_class.reference_pattern
+          # `#123`
+          replace_text_nodes_matching(object_class.reference_pattern) do |content|
+            object_link_filter(content, object_class.reference_pattern)
+          end
 
-        # `[Issue](#123)`, which is turned into
-        # `<a href="#123">Issue</a>`
-        replace_link_nodes_with_href(object_class.reference_pattern) do |link, text|
-          object_link_filter(link, object_class.reference_pattern, link_text: text)
+          # `[Issue](#123)`, which is turned into
+          # `<a href="#123">Issue</a>`
+          replace_link_nodes_with_href(object_class.reference_pattern) do |link, text|
+            object_link_filter(link, object_class.reference_pattern, link_text: text)
+          end
         end
 
-        # `http://gitlab.example.com/namespace/project/issues/123`, which is turned into
-        # `<a href="http://gitlab.example.com/namespace/project/issues/123">http://gitlab.example.com/namespace/project/issues/123</a>`
-        replace_link_nodes_with_text(object_class.link_reference_pattern) do |text|
-          object_link_filter(text, object_class.link_reference_pattern)
-        end
+        if object_class.link_reference_pattern
+          # `http://gitlab.example.com/namespace/project/issues/123`, which is turned into
+          # `<a href="http://gitlab.example.com/namespace/project/issues/123">http://gitlab.example.com/namespace/project/issues/123</a>`
+          replace_link_nodes_with_text(object_class.link_reference_pattern) do |text|
+            object_link_filter(text, object_class.link_reference_pattern)
+          end
 
-        # `[Issue](http://gitlab.example.com/namespace/project/issues/123)`, which is turned into
-        # `<a href="http://gitlab.example.com/namespace/project/issues/123">Issue</a>`
-        replace_link_nodes_with_href(object_class.link_reference_pattern) do |link, text|
-          object_link_filter(link, object_class.link_reference_pattern, link_text: text)
+          # `[Issue](http://gitlab.example.com/namespace/project/issues/123)`, which is turned into
+          # `<a href="http://gitlab.example.com/namespace/project/issues/123">Issue</a>`
+          replace_link_nodes_with_href(object_class.link_reference_pattern) do |link, text|
+            object_link_filter(link, object_class.link_reference_pattern, link_text: text)
+          end
         end
       end