From 551bce11a3e7ac328a3859faa0ab854c719863c1 Mon Sep 17 00:00:00 2001
From: Ian Cordasco <graffatcolmingov@gmail.com>
Date: Sun, 24 Jan 2016 15:19:44 -0600
Subject: [PATCH] Add extend_default_ignore list to OptionManager

---
 flake8/options/manager.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/flake8/options/manager.py b/flake8/options/manager.py
index 1dd6c8d..da3f73e 100644
--- a/flake8/options/manager.py
+++ b/flake8/options/manager.py
@@ -156,6 +156,7 @@ class OptionManager(object):
         self.program_name = prog
         self.version = version
         self.registered_plugins = set()
+        self.extended_default_ignore = set()
 
     @staticmethod
     def format_plugin(plugin_tuple):
@@ -182,6 +183,15 @@ class OptionManager(object):
             self.config_options_dict[option.config_name] = option
         LOG.debug('Registered option "%s".', option)
 
+    def extend_default_ignore(self, error_codes):
+        """Extend the default ignore list with the error codes provided.
+
+        :param list error_codes:
+            List of strings that are the error/warning codes with which to
+            extend the default ignore list.
+        """
+        self.extended_default_ignore.update(error_codes)
+
     def generate_versions(self, format_str='%(name)s: %(version)s'):
         """Generate a comma-separated list of versions of plugins."""
         return ', '.join(