lib/action_mailer/preview.rb in actionmailer-6.0.6.1 vs lib/action_mailer/preview.rb in actionmailer-6.1.0.rc1

@@ -112,10 +112,10 @@
         all.find { |p| p.preview_name == preview }
       end
 
       # Returns the underscored name of the mailer preview without the suffix.
       def preview_name
-        name.sub(/Preview$/, "").underscore
+        name.delete_suffix("Preview").underscore
       end
 
       private
         def load_previews
           if preview_path