Bug 308277

Summary:

Handle lspace/rspace as per MathML Core

Product:

WebKit

Reporter:

Frédéric Wang (:fredw) <fred.wang>

Component:

New Bugs

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Normal

CC:

eri

Priority:

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

See Also:

Bug Depends on:

Bug Blocks:

Attachments:

Frédéric Wang (:fredw)

Reported 2026-02-20 00:39:06 PST

Created attachment 478417 [details] Testcase In MathML Core, lspace/rspace to calculate child spacing during mrow layout: https://w3c.github.io/mathml-core/#layout-of-mrow WebKit instead adds lspace/rspace to the inline size of core operator.

Attachments
Testcase (440 bytes, text/html) 2026-02-20 00:39 PST, Frédéric Wang (:fredw)	no flags	Details
Screenshot (chromium) (10.31 KB, image/jpeg) 2026-02-20 00:39 PST, Frédéric Wang (:fredw)	no flags	Details
Screenshot (webkit) (12.57 KB, image/jpeg) 2026-02-20 00:39 PST, Frédéric Wang (:fredw)	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Frédéric Wang (:fredw)

Comment 1 2026-02-20 00:39:23 PST

Created attachment 478418 [details] Screenshot (chromium)

Frédéric Wang (:fredw)

Comment 2 2026-02-20 00:39:40 PST

Created attachment 478419 [details] Screenshot (webkit)

Frédéric Wang (:fredw)

Comment 3 2026-02-20 00:40:35 PST

Note that Firefox does not follow MathML Core and is different from WebKit, see https://bugzilla.mozilla.org/show_bug.cgi?id=2018114 for the Mozilla bug

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