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Emit a warning if "language = None" setting found (refs: #10474)

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Takeshi KOMIYA 2022-05-29 02:53:23 +09:00 committed by Adam Turner
parent a3d0983552
commit 8e353e3103
1 changed files with 3 additions and 0 deletions
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sphinx/config.py
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@ -168,6 +168,9 @@ class Config:
# Resolve https://github.com/sphinx-doc/sphinx/issues/10474 where conf.py
# explicitly sets language to None, by coercing it to English.
if namespace.get("language", ...) is None:
logging.warning(__("Invalid configuration found: 'language = None'. "
"Now it takes only a string. Please update your configuration. "
"Fallback to 'en' (English)."))
namespace["language"] = "en"
warnings.warn("'None' is not a valid value for 'language', coercing to 'en'. "
"Update 'conf.py' to a valid language code to silence this "