Bug 120133 – Remove support for the hspace/vspace attributes on table

• Status: RESOLVED
• Resolution: FIXED
• Component: Tables

[Simon Pieters (:zcorpan)]

WebKit supports vspace and hspace attributes on <table> while IE doesn't and Gecko only does in quirks mode and they are considering dropping that, too.

See https://bugzilla.mozilla.org/show_bug.cgi?id=725646

Compatibility analysis in https://bugzilla.mozilla.org/show_bug.cgi?id=725646#c14 and #c15 (summary: 4 out of top 53,000 sites' front pages have minor visual difference if vspace/hspace on table is dropped)

Chromium bug: https://code.google.com/p/chromium/issues/detail?id=277080

[Ryosuke Niwa]

*** Bug 167612 has been marked as a duplicate of this bug. ***

[Ryosuke Niwa]

See https://github.com/whatwg/html/pull/13

[Ahmad Saleem]

Webkit still support 'hspace' and 'vspace':

https://github.com/WebKit/WebKit/blob/147df77f6bb805a2c35456b30b5bbb8f794b043c/Source/WebCore/html/HTMLTableElement.cpp#L330

Chrome / Blink removed it in 2015:

https://src.chromium.org/viewvc/blink?view=revision&revision=190025

Safari also fail following WPT tests:

https://wpt.fyi/results/html/rendering/non-replaced-elements/tables?label=master&label=experimental&aligned&view=subtest&q=table-vspace-hspace

Also Safari 15.6.1 on macOS 12.5.1 render this test case (from Chrome bug - Comment 9) different compared to Chrome Canary 106 and Firefox Nightly 105:

http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=2984

Just wanted to share updated test results. Thanks!

[Ahmad Saleem]

I will work on it later tonight.

[Ahmad Saleem]

https://github.com/WebKit/WebKit/pull/3573

[EWS]

Committed 253788@main (6676a3759ed3): <https://commits.webkit.org/253788@main>

Reviewed commits have been landed. Closing PR #3631 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/99150785>