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Update 4.1.3 Status Messages interpretation to cover ariaNotify#5079

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patrickhlauke-4.1.3-arianotify-fudge
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Update 4.1.3 Status Messages interpretation to cover ariaNotify#5079
patrickhlauke wants to merge 12 commits intomainfrom
patrickhlauke-4.1.3-arianotify-fudge

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@patrickhlauke patrickhlauke commented Apr 19, 2026 •
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While ideally we'd want to actually change the normative wording of the SC (see #4952), if that fails for now, this PR adds a note to 4.1.3 Status Messages understanding that handwaves "when we say roles and properties, we also meant accessibility API access". It also adds a new technique and working example demonstrating the use of ariaNotify.

/cc @adampage @scottaohara @fstrr

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patrickhlauke commented Apr 19, 2026

To verify the working example, you'll need a browser with ariaNotify support. I've tested this with a fairly old special build of Microsoft Edge that was compiled with ariaNotify support.

screenshot showing the working example in Edge, with NVDA's speech viewer showing that the notifications happened as they should
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patrickhlauke commented Apr 19, 2026
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adampage commented Apr 20, 2026

Also working well in macOS Tahoe 26.4.1 VoiceOver with Chrome 147.0.7727.102 and Firefox Nightly 151.0a1.

screenshot showing the working example in Chrome, with macOS VoiceOver’s speech and braille viewers showing that the notifications happened as they should. screenshot showing the working example in Firefox Nightly, with macOS VoiceOver’s speech and braille viewers showing that the notifications happened as they should.
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Exciting to see WCAG’s first reference to ariaNotify. 💪🏻

Are we in the habit of warning readers when a feature is still cutting edge? If so, I inserted a draft note suggestion after the technique’s description.
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Comment thread techniques/aria/ARIA27.html
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fstrr commented Apr 20, 2026

Are we in the habit of warning readers when a feature is still cutting edge?

A couple of years ago, I removed numerous "workaround needed for IE10", "not supported in in Firefox 9", and similar comments from Techniques documents. If we want to add comments like "this is cutting edge" then we're also adding more work for ourselves in the future having to go in and remove the comments.
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Update understanding/21/status-messages.html
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Co-authored-by: Adam Page <adam@adampage.net>
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detlevhfischer commented Apr 22, 2026

@adampage

Until it is more broadly supported, only use ariaNotify as a progressive enhancement

Would that need browser sniffing to decide whether to notify via live regions or with aria-notify? Just wondering how you'd avoid hearing the same notification twice, there may be sound ways of handling that that I don't know.
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adampage commented Apr 22, 2026

@detlevhfischer

Would that need browser sniffing to decide whether to notify via live regions or with aria-notify?

Feature sniffing, luckily, not browser sniffing.
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patrickhlauke commented Apr 22, 2026

I was actually pondering if I should add a tiny feature detect on the working example itself, to show a warning about the user's current browser not supporting ariaNotify ... i'll get that added in
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patrickhlauke commented Apr 22, 2026

Added feature detect to working example 41a16d5
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Update techniques/aria/ARIA27.html
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@bruce-usab bruce-usab requested a review from adampage May 1, 2026 14:36
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