Fixed #19811 - Added language code fallback in get_language_info.

1 files changed, 6 insertions, 0 deletions

diff --git a/django/utils/translation/__init__.py b/django/utils/translation/__init__.py
index 6fd52b6023..4645f142ce 100644
--- a/django/utils/translation/__init__.py
+++ b/django/utils/translation/__init__.py
@@ -187,4 +187,10 @@ def get_language_info(lang_code):
     try:
         return LANG_INFO[lang_code]
     except KeyError:
+        if '-' in lang_code:
+            splited_lang_code = lang_code.split('-')[0]
+            try:
+                return LANG_INFO[splited_lang_code]
+            except KeyError:
+                raise KeyError("Unknown language code %r and %r." % (lang_code, splited_lang_code))
         raise KeyError("Unknown language code %r." % lang_code)