# HG changeset patch
# User Pierre-Yves David <pierre-yves.da...@ens-lyon.org>
# Date 1481545965 -3600
# Mon Dec 12 13:32:45 2016 +0100
# Node ID f3479f74af0d2b21c89e906c503f4cddf4b3c39b
# Parent 182cacaa4c32330c0466b7111a75d060830783e8
registrar: raise a programming error on duplicated registering
Previous, registering different object with the same name would silently
overwrite the first value with the second one. We now detect the situation and
raise an error. No extension in test or core had the issues.
diff --git a/mercurial/registrar.py b/mercurial/registrar.py
--- a/mercurial/registrar.py
+++ b/mercurial/registrar.py
@@ -8,6 +8,7 @@
from __future__ import absolute_import
from . import (
+ error,
pycompat,
util,
)
@@ -55,6 +56,9 @@ class _funcregistrarbase(object):
func._origdoc = doc
func.__doc__ = self._formatdoc(decl, doc)
+ if name in self._table:
+ raise error.ProgrammingError('duplicate registration for name %s',
+ name)
self._table[name] = func
self._extrasetup(name, func, *args, **kwargs)
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