Re: [whatwg/fetch] Allow user agents to use more permissive header validation in extensions (Issue #1878)

annevk left a comment (whatwg/fetch#1878)

Overall this seems reasonable, but I would prefer us to be more explicit about when exactly this happens as the "may" statement seems unnecessarily broad. Is the execution environment of extensions standardized?

This would also not solve the equivalent `XMLHttpRequest` case https://xhr.spec.whatwg.org/#the-setrequestheader()-method so we probably want something a little different.

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Received on Tuesday, 18 November 2025 12:33:29 UTC