diff options
Diffstat (limited to 'sphinx/config.py')
| -rw-r--r-- | sphinx/config.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sphinx/config.py b/sphinx/config.py index 0ffa128f3..7818244e5 100644 --- a/sphinx/config.py +++ b/sphinx/config.py @@ -19,7 +19,7 @@ from typing import Any, NamedTuple, Union from six import PY2, PY3, iteritems, string_types, binary_type, text_type, integer_types from sphinx.deprecation import RemovedInSphinx30Warning -from sphinx.errors import ConfigError +from sphinx.errors import ConfigError, ExtensionError from sphinx.locale import _, __ from sphinx.util import logging from sphinx.util.i18n import format_date @@ -347,7 +347,10 @@ class Config(object): def add(self, name, default, rebuild, types): # type: (unicode, Any, Union[bool, unicode], Any) -> None - self.values[name] = (default, rebuild, types) + if name in self.values: + raise ExtensionError(__('Config value %r already present') % name) + else: + self.values[name] = (default, rebuild, types) def filter(self, rebuild): # type: (Union[unicode, List[unicode]]) -> Iterator[ConfigValue] |