Issue 1781. Now ConfigParser.add_section does not let you add a
DEFAULT section any more, because it duplicated sections with
the rest of the machinery. Thanks Tim Lesher and Manuel Kaufmann.
diff --git a/Lib/ConfigParser.py b/Lib/ConfigParser.py
index 131d697..65c6ae2 100644
--- a/Lib/ConfigParser.py
+++ b/Lib/ConfigParser.py
@@ -235,8 +235,12 @@
"""Create a new section in the configuration.
Raise DuplicateSectionError if a section by the specified name
- already exists.
+ already exists. Raise ValueError if name is DEFAULT or any of it's
+ case-insensitive variants.
"""
+ if section.lower() == "default":
+ raise ValueError, 'Invalid section name: %s' % section
+
if section in self._sections:
raise DuplicateSectionError(section)
self._sections[section] = self._dict()