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[LayoutNG] Don't allow line height quirk inside list items. #14623

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merged 1 commit into from
Dec 20, 2018

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@chromium-wpt-export-bot chromium-wpt-export-bot commented Dec 20, 2018

This makes us match legacy engine behavior more closely, and both Edge
and Firefox have something similar, although Firefox triggers based on
element type (LI), and not display type (list-item). There's currently
nothing in the spec [1] that suggests such special behavior for list
items.

[1] https://quirks.spec.whatwg.org/#the-line-height-calculation-quirk

This fix makes the line height differences go away in the test
tables/mozilla/bugs/bug23235.html (but note that it will still require
a rebaseline, because of minor text rendering differences between
legacy and NG).

See whatwg/quirks#38 for spec discussion.

Change-Id: I396c0c85454feeaa45a0a5953b9e6b7c475d131e
Reviewed-on: https://chromium-review.googlesource.com/c/1379897
Commit-Queue: Emil A Eklund <[email protected]>
Reviewed-by: Aleks Totic <[email protected]>
Reviewed-by: Koji Ishii <[email protected]>
Reviewed-by: Emil A Eklund <[email protected]>
Cr-Commit-Position: refs/heads/master@{#618304}

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Already reviewed downstream.

@chromium-wpt-export-bot chromium-wpt-export-bot force-pushed the chromium-export-cl-1379897 branch 2 times, most recently from a6caf52 to 556a9e7 Compare December 20, 2018 15:25
This makes us match legacy engine behavior more closely, and both Edge
and Firefox have something similar, although Firefox triggers based on
element type (LI), and not display type (list-item). There's currently
nothing in the spec [1] that suggests such special behavior for list
items.

[1] https://quirks.spec.whatwg.org/#the-line-height-calculation-quirk

This fix makes the line height differences go away in the test
tables/mozilla/bugs/bug23235.html (but note that it will still require
a rebaseline, because of minor text rendering differences between
legacy and NG).

See whatwg/quirks#38 for spec discussion.

Change-Id: I396c0c85454feeaa45a0a5953b9e6b7c475d131e
Reviewed-on: https://chromium-review.googlesource.com/c/1379897
Commit-Queue: Emil A Eklund <[email protected]>
Reviewed-by: Aleks Totic <[email protected]>
Reviewed-by: Koji Ishii <[email protected]>
Reviewed-by: Emil A Eklund <[email protected]>
Cr-Commit-Position: refs/heads/master@{#618304}
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3 participants