A site busts a stylesheet's cache with a date string, so a page links to
styles/main.css?Thursday, 26-Feb-2026 16:26:41 UTC. A browser encodes the
spaces before requesting, but kage parsed the href and passed RawQuery through
verbatim, so the request line carried literal spaces and the server answered
400 Bad Request. On a developer.apple.com crawl this was the bulk of the
download errors.
Re-encode the query on the canonical URL: percent-encode any byte a query may
not carry (space, control, non-ASCII) while leaving valid sub-delims and
existing %XX escapes alone. Doing it in canonical fixes the fetch and keeps the
on-disk key in step with the request.
Tam Nguyen Duc
2afa885021