# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1548205733 28800
# Node ID 4ad002b2584d3cf3b6aeb2e3d3bc457db494c820
# Parent  8df3471931cccfd80345e1ec3f3d31f1b94247c1
config: reject str sections and keys on Python 3

Otherwise we could end up with a dict having both the str
and bytes versions of a particular config item. This may cause
some tests to regress. I haven't checked. But it is better
behavior to fail fast.

We could just as easily change this to normalize the values. But
I like catching all non-compliant call sites first.

Differential Revision: https://phab.mercurial-scm.org/D5649

diff -r 8df3471931cc -r 4ad002b2584d mercurial/config.py
--- a/mercurial/config.py	Tue Jan 22 17:02:40 2019 -0800
+++ b/mercurial/config.py	Tue Jan 22 17:08:53 2019 -0800
@@ -78,6 +78,10 @@
         return list(self._data.get(section, {}).iteritems())
     def set(self, section, item, value, source=""):
         if pycompat.ispy3:
+            assert not isinstance(section, str), (
+                'config section may not be unicode strings on Python 3')
+            assert not isinstance(item, str), (
+                'config item may not be unicode strings on Python 3')
             assert not isinstance(value, str), (
                 'config values may not be unicode strings on Python 3')
         if section not in self: