New html attribute indicating searchability in hidden content

[vmpstr]

Request for Mozilla Position on an Emerging Web Specification

• Specification Title: An HTML attribute to enable searchability in hidden content
• Specification or proposal URL: [css-contain-2] Proposal: content-visibility: hidden-matchable w3c/csswg-drafts#5595 (comment)

Other information

There has been some discussion about this on CSSWG when the proposal was for a new CSS property. Since then, we have moved to an HTML attribute, but a lot of the discussion in the proposal URL's root issue still applies.

[emilio]

cc @annevk @smaug----

[annevk]

That's a lot of context to wade through for something that hasn't even made it to whatwg/html yet. It seems like a reasonable idea though. Perhaps we should make <details> "work" first?

[chrishtr]

That's a lot of context to wade through for something that hasn't even made it to whatwg/html yet.

See also this issue in whatwg/html, filed a while back.

It seems like a reasonable idea though.

I'm going to interpret that as "implementer interest", especially since @emilio and @tantek also made positive comments.

Perhaps we should make <details> "work" first?

Automatically opening <details> is part of the plan, in addition to the new attribute and event.
<details> is tracked here.

[annevk]

It seems there's now a more concrete proposal at whatwg/html#6040 (comment).

[annevk]

Let's duplicate this into #612.