Add :issue: directive for easy linking to bugs.python.org.
diff --git a/Doc/tools/sphinxext/pyspecific.py b/Doc/tools/sphinxext/pyspecific.py
new file mode 100644
index 0000000..f7c0daa
--- /dev/null
+++ b/Doc/tools/sphinxext/pyspecific.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+"""
+ pyspecific.py
+ ~~~~~~~~~~~~~
+
+ Sphinx extension with Python doc-specific markup.
+
+ :copyright: 2008 by Georg Brandl.
+ :license: Python license.
+"""
+
+ISSUE_URI = 'http://bugs.python.org/issue%s'
+
+from docutils import nodes, utils
+
+def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
+ issue = utils.unescape(text)
+ text = 'issue ' + issue
+ refnode = nodes.reference(text, text, refuri=ISSUE_URI % issue)
+ return [refnode], []
+
+
+def setup(app):
+ app.add_role('issue', issue_role)