From a206ec15a0f6dbea10bf78fbc50e0bf64e3fb28f 2014-11-07 02:06:24
From: Carlos Cordoba <ccordoba12@gmail.com>
Date: 2014-11-07 02:06:24
Subject: [PATCH] Update pygments monkeypatch for compatibility with Pygments 2.0

Closes gh-6877

---

diff --git a/IPython/qt/console/pygments_highlighter.py b/IPython/qt/console/pygments_highlighter.py
index 4044be7..402938f 100644
--- a/IPython/qt/console/pygments_highlighter.py
+++ b/IPython/qt/console/pygments_highlighter.py
@@ -24,11 +24,12 @@ def get_tokens_unprocessed(self, text, stack=('root',)):
         for rexmatch, action, new_state in statetokens:
             m = rexmatch(text, pos)
             if m:
-                if type(action) is _TokenType:
-                    yield pos, action, m.group()
-                else:
-                    for item in action(self, m):
-                        yield item
+                if action is not None:
+                    if type(action) is _TokenType:
+                        yield pos, action, m.group()
+                    else:
+                        for item in action(self, m):
+                            yield item
                 pos = m.end()
                 if new_state is not None:
                     # state transition