Description

Alignment on apsects of contentEditable that have been agreed as part of the Interop 2022 investigation.

Rationale

contenteditable interop has been a longstanding issue on the web, and causes significant difficulties for users and authors as libraries need to handle browser differences, often using complex approaches like DOM diffing. However in some cases even the few invariants assumed by libraries are broken, and so there can be user-facing breakage.

The lack of a trustworthy specification, and constraints imposed by deployed content makes it hard to fully align on contenteditable behaviour. However the interop 2022 investigation revealed some areas in which browsers could better align, and in doing so make it easier to write working editing libraries.

Specification

No response

Tests

https://github.com/web-platform-tests/wpt/blob/master/editing/other/insertparagraph-in-inline-editing-host.tentative.html