rusackas commented on code in PR #42103:
URL: https://github.com/apache/superset/pull/42103#discussion_r3592899149
##########
scripts/translations/backfill_po.py:
##########
@@ -138,6 +138,22 @@ def _lang_name(code: str) -> str:
return LANGUAGE_NAMES.get(code, code)
+# An ISO 639-1/639-2 code, optionally followed by an ISO 3166 region
+# (``_BR``, two uppercase) or an ISO 15924 script (``_Latn``, titlecase). The
+# script subtag matters for catalogs like ``sr_Latn`` (Serbian in Latin
script);
+# without it the code was rejected and the catalog silently skipped.
+_LANG_CODE_RE = re.compile(r"[a-z]{2,3}(_([A-Z]{2}|[A-Z][a-z]{3}))?")
Review Comment:
Done, annotated as `re.Pattern[str]`.
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