2 files changed, 2 insertions, 2 deletions
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb
index 4ec860d69a..1bad82159a 100644
--- a/actionpack/lib/action_view/helpers/capture_helper.rb
+++ b/actionpack/lib/action_view/helpers/capture_helper.rb
@@ -156,7 +156,7 @@ module ActionView
           end
           nil
         else
-          @view_flow.get(name)
+          @view_flow.get(name).presence
         end
       end
 
diff --git a/actionpack/lib/action_view/helpers/form_tag_helper.rb b/actionpack/lib/action_view/helpers/form_tag_helper.rb
index 1adc8225f1..8abd5d6e9c 100644
--- a/actionpack/lib/action_view/helpers/form_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_tag_helper.rb
@@ -778,7 +778,7 @@ module ActionView
 
         # see http://www.w3.org/TR/html4/types.html#type-name
         def sanitize_to_id(name)
-          name.to_s.gsub(']','').gsub(/[^-a-zA-Z0-9:.]/, "_")
+          name.to_s.delete(']').gsub(/[^-a-zA-Z0-9:.]/, "_")
         end
     end
   end