Thanks for this intent! I'm obviously supportive. To confirm a few things, Chromium disabled XSLT completely on all pre-stable channels in December of last year. And we launched the origin trial in 152, which went to stable this week. There are a few registrants, but really not many yet. I don't believe I can share the list, unfortunately, but I can probably share the rough scale of the list, if that's helpful. Today there are 15 registrants total.
The current plan is to turn it off by default in 158, which goes to stable around Nov 17. That's usually when the bulk of the origin trial registrations happen. Though I'm trying to land a user-visible banner on all XSLT sites in 154 (September), which might help. Good luck with this! Thanks, Mason On Thursday, August 27, 2026 at 7:28:59 AM UTC-7 [email protected] wrote: > To clarify the Chromium timeline, their plan is to turn it off on Stable > in 158, which is in November. I assume there are very few sites that have > opted in to the origin trial, since it's new and it's still enabled in > Stable. > > I believe we can't get origin trial participants from them, but we can run > a query in httparchive to find such pages (if they're in the dataset). > > Apart from the origin trial, Chromium has re-enabled > <https://chromium-review.googlesource.com/c/chromium/src/+/8224345> XSLT > (temporarily) for CAP Alert documents. We could copy this for Nightly if > we're worried about annoying Nightly users who view such documents. > > On Thu, Aug 27, 2026 at 1:23 PM 'Emma Zühlcke' via [email protected] < > [email protected]> wrote: > >> Isn't Nightly exactly the channel for trying out new configurations? What >> is our stance on webcompat in Nightly? I had the impression website >> breakage is acceptable on Nightly, especially given that this config will >> reach release "soon". For folks who are testing with Nightly this is an >> opportunity for them to spot breakage in their own applications. >> >> On Wed, 26 Aug 2026 at 17:57, 'Jeff Muizelaar' via [email protected] >> <[email protected]> wrote: >> >>> Are we running an origin trial? >>> >>> Chrome's current disablement has presumably helped them build a list of >>> origins currently broken with XSLT disabled. If we disable on Nightly, all >>> of those sites will be broken and we'll have to discover them ourselves. If >>> we can't get the list of sites that Chrome has left XSLT enabled, disabling >>> it on Nightly has a clear webcompat cost and offers limited advantage. >>> >>> So my suggestion is: >>> 1. Copy the list of origins that Chrome has XSLT enabled and leave it >>> enabled for those origins on Nightly >>> or >>> 2. Don't disable on Nightly until Chrome's origin trial has ended (Aug >>> 30, 2027) >>> >>> -Jeff >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "[email protected]" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit >>> https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAKb2zs9-DiCXjY6%2BbH1-VoE6_p0E12UEi2mmD%3DKeD1-qw72EaQ%40mail.gmail.com >>> >>> <https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAKb2zs9-DiCXjY6%2BbH1-VoE6_p0E12UEi2mmD%3DKeD1-qw72EaQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "[email protected]" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> > To view this discussion visit >> https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAPdF9uPO537cJ%3D7HFW8A4GtR9rL%2BaSP-EQVfhyTVn%3D-knZWOOw%40mail.gmail.com >> >> <https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAPdF9uPO537cJ%3D7HFW8A4GtR9rL%2BaSP-EQVfhyTVn%3D-knZWOOw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Simon Pieters > https://www.mozilla.com/ > -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/8364a641-9727-4481-9a1f-9f92114a521en%40mozilla.org.
