Bug 264381

Summary:	summary (details) display values other than list-item should hide marker
Product:	WebKit	Reporter:	Albert Scheiner <vertigoback>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bfulgham, dbaron, karlcow, ntim, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	GoodFirstBug, InRadar
Version:	Safari 17
Hardware:	Mac (Apple Silicon)
OS:	macOS 14
Bug Depends on:
Bug Blocks:	252223

Description Albert Scheiner 2023-11-07 20:06:21 PST

I was just about to implement a <details> + <summary> element where the summary is only as wide as its content, but on its own line.

I actually did not want to hide the ::marker, but (1) having the summary is only as wide as its content and (2) show the marker.
This is not possible in Webkit (Safari 17) due to "inline list-item" not being supported:
https://bugs.webkit.org/show_bug.cgi?id=224809

Having the display property of a <summary> element set to something else but "list-item" does not show the ::marker arrow in Firefox and Chromium, but Safari does. 
I assume that this is what is suppose to happen.

Here is a pen: https://codepen.io/scheinercc/pen/jOdBrEq

So either way I set display to any flow value Webkit renders differently from the other engines.

Comment 1 Tim Nguyen (:ntim) 2023-11-08 17:40:26 PST

A band aid fix is pretty straightforward here: 

https://searchfox.org/wubkat/rev/17d1d747ad3bb45ca5d2f0c735778816a3cd701f/Source/WebCore/html/shadow/DetailsMarkerControl.cpp#64

can just check for the display value.

Comment 2 Radar WebKit Bug Importer 2023-11-14 20:07:21 PST

<rdar://problem/118433698>

Comment 3 L. David Baron 2024-04-09 09:21:27 PDT

The larger underlying difference here is covered by bug 157323.