Use the RFC 9110 reason phrases for 413, 414 and 416 - #1328
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josevalim merged 1 commit intoSep 3, 2026
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IANA's HTTP status code registry lists these as "Content Too Large", "URI Too Long" and "Range Not Satisfiable". RFC 9110 renamed all four of the phrases Plug carried from RFC 7231; 422 was updated in elixir-plug#1276 and these three were left behind. The old atoms are kept as aliases, using the same mechanism elixir-plug#1276 added, so put_status(:request_entity_too_large) keeps working. Co-authored-by: Claude <noreply@anthropic.com>
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IANA's HTTP status code registry, and RFC 9110, name these differently:
RFC 9110 renamed four of the phrases Plug carries from RFC 7231. #1276 updated
422 and added the
aliased_statusesmechanism so the old atom kept resolving;these three were left on the old names.
This applies that same change to them and reuses that mechanism, so
put_status(:request_entity_too_large),:request_uri_too_longand:requested_range_not_satisfiableall keep working. What changes is the reasonphrase returned by
reason_phrase/1and the new atoms in the generated list.306 and 418 are also "(Unused)" in the registry, but they are historical and
load-bearing in Plug's own tests, so they are deliberately untouched.
mix test: 689 passed before, 689 after. Keeping the old phrases fails the newassertion; dropping the aliases fails the alias test, so both halves are needed.
Assisted by Claude (
claude-opus-5); I reviewed and verified the change.