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alanbaradlay wants to merge 20 commits into
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alanbaradlay:eng/BFC-v2-Let-any-box-override-the-content-size-of-its-containing-block
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[#78735
alanbaradlay wants to merge 20 commits into
WebKit:mainfrom
alanbaradlay:eng/BFC-v2-Let-any-box-override-the-content-size-of-its-containing-block

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@alanbaradlay

@alanbaradlay alanbaradlay commented Oct 29, 2026 •
edited by webkit-early-warning-system
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7303667

[BFC] Let any box override the content size of its containing block
https://bugs.webkit.org/show_bug.cgi?id=327966
<rdar://problem/190322106>

Reviewed by NOBODY (OOPS!).

62f1f53

[BFC] Lay out relatively positioned boxes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327738
<rdar://problem/190159206>

Reviewed by NOBODY (OOPS!).

1648db4

[BFC] Lay out fit-content out-of-flow boxes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327735
<rdar://problem/190157997>

Reviewed by NOBODY (OOPS!).

3319577

[BFC] Lay out absolutely positioned boxes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327730
<rdar://problem/190153953>

Reviewed by NOBODY (OOPS!).

cd609ad

[BFC] Lay out boxes with layers in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327727
<rdar://problem/190152348>

Reviewed by NOBODY (OOPS!).

097020e

[BFC] Compute the intrinsic inline sizes of roots in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327717
<rdar://problem/190141342>

Reviewed by NOBODY (OOPS!).

797476e

[BFC] Lay out overflow: hidden boxes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327692
<rdar://problem/190122938>

Reviewed by NOBODY (OOPS!).

38b349d

[BFC] Lay out nested block formatting context roots in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327699
<rdar://problem/190124591>

Reviewed by NOBODY (OOPS!).

63a7070

[BFC] Lay out boxes with sizing keyword inline sizes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327628
<rdar://problem/190078123>

Reviewed by NOBODY (OOPS!).

c2dabf6

[BFC] Lay out boxes with an aspect ratio in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327698
<rdar://problem/190124318>

Reviewed by NOBODY (OOPS!).

3b1221e

[BFC] Lay out boxes with sizing keyword block sizes in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327693
<rdar://problem/190123484>

Reviewed by NOBODY (OOPS!).

977b3bd

[BFC] Lay out inline content in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327606
<rdar://problem/190063131>

Reviewed by NOBODY (OOPS!).

363c4c7

[BFC] Cover quirks mode documents in the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327601
<rdar://problem/190060500>

Reviewed by NOBODY (OOPS!).

baf1279

[BFC] Add margin collapsing and cover block formatting contexts with block boxes only
https://bugs.webkit.org/show_bug.cgi?id=327598
<rdar://problem/190058922>

Reviewed by NOBODY (OOPS!).

f48dff2

[BFC] Add a coverage indicator for the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327591
<rdar://problem/190055540>

Reviewed by NOBODY (OOPS!).

798aef8

[BFC] Add the skeleton of the new block formatting context
https://bugs.webkit.org/show_bug.cgi?id=327588
<rdar://problem/190053684>

Reviewed by NOBODY (OOPS!).

6dd9f8a

[IFC] Let the block container build the block layout state of its inline content
https://bugs.webkit.org/show_bug.cgi?id=327892
<rdar://problem/190271127>

Reviewed by NOBODY (OOPS!).

22697d6

[IFC] Keep only what crosses into the inline content in the margin state
https://bugs.webkit.org/show_bug.cgi?id=327877
<rdar://problem/190256744>

Reviewed by NOBODY (OOPS!).

7bd255c

[IFC] Pass the parent block layout state to the inline formatting context read-only
https://bugs.webkit.org/show_bug.cgi?id=327864
<rdar://problem/190250094>

Reviewed by NOBODY (OOPS!).

8181de5

[IFC] Keep the margins the inline formatting context carries in its own layout state
https://bugs.webkit.org/show_bug.cgi?id=327863
<rdar://problem/190249888>

Reviewed by NOBODY (OOPS!).

7303667

Misc iOS, visionOS, tvOS & watchOS macOS Linux Windows Apple Internal
  🧪 style   🛠 ios   🛠 mac   🛠 wpe   🛠 win ⏳ 🛠 ios-apple
  🧪 bindings   🛠 ios-sim   🛠 mac-cmake-debug   🧪 wpe-wk2   🧪 win-tests ⏳ 🛠 mac-apple
  🧪 webkitperl   🧪 ios-wk2   🧪 api-mac   🧪 api-wpe ⏳ 🛠 vision-apple
  🧪 ios-wk2-wpt   🧪 api-mac-cmake-debug   🧪 jsc-wpe
  🧪 jsc-x86-64   🧪 api-ios   🧪 mac-wk2   🛠 gtk3-gcc
  🛠 🧪 jsc-debug-arm64   🛠 ios-safer-cpp   🧪 mac-cmake-debug-wk2   🛠 gtk
  🛠 vision   🧪 mac-wk2-stress   🧪 gtk-wk2
  🛠 vision-sim   🧪 mac-intel-wk2   🧪 api-gtk
  🧪 vision-wk2   🛠 mac-safer-cpp   🛠 playstation
  🛠 tv   🧪 mac-site-isolation
  🛠 tv-sim
  🛠 watch
  🛠 watch-sim

@alanbaradlay alanbaradlay self-assigned this Oct 29, 2026
@alanbaradlay alanbaradlay added New Bugs Unclassified bugs are placed in this component until the correct component can be determined. skip-ews Applied to prevent a change from being run on EWS and removed New Bugs Unclassified bugs are placed in this component until the correct component can be determined. labels Oct 29, 2026
@webkit-early-warning-system

webkit-early-warning-system commented Oct 29, 2026 •
edited
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EWS run on previous version of this PR (hash 603eeab)

Details

Misc iOS, visionOS, tvOS & watchOS macOS Linux Windows Apple Internal
  🧪 style   🛠 ios   🛠 mac   🛠 wpe   🛠 win ⏳ 🛠 ios-apple
  🧪 bindings   🛠 ios-sim   🛠 mac-cmake-debug   🧪 wpe-wk2   🧪 win-tests ⏳ 🛠 mac-apple
  🧪 webkitperl   🧪 ios-wk2   🧪 api-mac   🧪 api-wpe ⏳ 🛠 vision-apple
  🧪 ios-wk2-wpt   🧪 api-mac-cmake-debug   🧪 jsc-wpe
  🧪 jsc-x86-64   🧪 api-ios   🧪 mac-wk2   🛠 gtk3-gcc
  🛠 🧪 jsc-debug-arm64   🛠 ios-safer-cpp   🧪 mac-cmake-debug-wk2   🛠 gtk
  🛠 vision   🧪 mac-wk2-stress   🧪 gtk-wk2
  🛠 vision-sim   🧪 mac-intel-wk2   🧪 api-gtk
  🧪 vision-wk2   🛠 mac-safer-cpp   🛠 playstation
  🛠 tv   🧪 mac-site-isolation
  🛠 tv-sim
  🛠 watch
  🛠 watch-sim

@alanbaradlay
[IFC] Keep the margins the inline formatting context carries in its o…
8181de5 
…wn layout state

https://bugs.webkit.org/show_bug.cgi?id=327863
<rdar://problem/190249888>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[IFC] Pass the parent block layout state to the inline formatting con…
7bd255c 
…text read-only

https://bugs.webkit.org/show_bug.cgi?id=327864
<rdar://problem/190250094>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[IFC] Keep only what crosses into the inline content in the margin state
22697d6 
https://bugs.webkit.org/show_bug.cgi?id=327877
<rdar://problem/190256744>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[IFC] Let the block container build the block layout state of its inl…
6dd9f8a 
…ine content

https://bugs.webkit.org/show_bug.cgi?id=327892
<rdar://problem/190271127>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Add the skeleton of the new block formatting context
798aef8 
https://bugs.webkit.org/show_bug.cgi?id=327588
<rdar://problem/190053684>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Add a coverage indicator for the new block formatting context
f48dff2 
https://bugs.webkit.org/show_bug.cgi?id=327591
<rdar://problem/190055540>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Add margin collapsing and cover block formatting contexts with …
baf1279 
…block boxes only

https://bugs.webkit.org/show_bug.cgi?id=327598
<rdar://problem/190058922>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Cover quirks mode documents in the new block formatting context
363c4c7 
https://bugs.webkit.org/show_bug.cgi?id=327601
<rdar://problem/190060500>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out inline content in the new block formatting context
977b3bd 
https://bugs.webkit.org/show_bug.cgi?id=327606
<rdar://problem/190063131>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out boxes with sizing keyword block sizes in the new block …
3b1221e 
…formatting context

https://bugs.webkit.org/show_bug.cgi?id=327693
<rdar://problem/190123484>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out boxes with an aspect ratio in the new block formatting …
c2dabf6 
…context

https://bugs.webkit.org/show_bug.cgi?id=327698
<rdar://problem/190124318>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out boxes with sizing keyword inline sizes in the new block…
63a7070 
… formatting context

https://bugs.webkit.org/show_bug.cgi?id=327628
<rdar://problem/190078123>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out nested block formatting context roots in the new block …
38b349d 
…formatting context

https://bugs.webkit.org/show_bug.cgi?id=327699
<rdar://problem/190124591>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out overflow: hidden boxes in the new block formatting context
797476e 
https://bugs.webkit.org/show_bug.cgi?id=327692
<rdar://problem/190122938>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Compute the intrinsic inline sizes of roots in the new block fo…
097020e 
…rmatting context

https://bugs.webkit.org/show_bug.cgi?id=327717
<rdar://problem/190141342>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out boxes with layers in the new block formatting context
cd609ad 
https://bugs.webkit.org/show_bug.cgi?id=327727
<rdar://problem/190152348>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out absolutely positioned boxes in the new block formatting…
3319577 
… context

https://bugs.webkit.org/show_bug.cgi?id=327730
<rdar://problem/190153953>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out fit-content out-of-flow boxes in the new block formatti…
1648db4 
…ng context

https://bugs.webkit.org/show_bug.cgi?id=327735
<rdar://problem/190157997>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Lay out relatively positioned boxes in the new block formatting…
62f1f53 
… context

https://bugs.webkit.org/show_bug.cgi?id=327738
<rdar://problem/190159206>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
[BFC] Let any box override the content size of its containing block
7303667 
https://bugs.webkit.org/show_bug.cgi?id=327966
<rdar://problem/190322106>

Reviewed by NOBODY (OOPS!).
@alanbaradlay
alanbaradlay force-pushed the eng/BFC-v2-Let-any-box-override-the-content-size-of-its-containing-block branch from 603eeab to 7303667 Compare October 30, 2026 19:44
@alanbaradlay alanbaradlay added the New Bugs Unclassified bugs are placed in this component until the correct component can be determined. label Oct 30, 2026
@webkit-early-warning-system

webkit-early-warning-system commented Oct 30, 2026 •
edited
Loading

Copy link
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Collaborator

EWS run on current version of this PR (hash 7303667)

Details

Misc iOS, visionOS, tvOS & watchOS macOS Linux Windows Apple Internal
  🧪 style   🛠 ios   🛠 mac   🛠 wpe   🛠 win ⏳ 🛠 ios-apple
  🧪 bindings   🛠 ios-sim   🛠 mac-cmake-debug   🧪 wpe-wk2   🧪 win-tests ⏳ 🛠 mac-apple
  🧪 webkitperl   🧪 ios-wk2   🧪 api-mac   🧪 api-wpe ⏳ 🛠 vision-apple
  🧪 ios-wk2-wpt   🧪 api-mac-cmake-debug   🧪 jsc-wpe
  🧪 jsc-x86-64   🧪 api-ios   🧪 mac-wk2   🛠 gtk3-gcc
  🛠 🧪 jsc-debug-arm64   🛠 ios-safer-cpp   🧪 mac-cmake-debug-wk2   🛠 gtk
  🛠 vision   🧪 mac-wk2-stress   🧪 gtk-wk2
  🛠 vision-sim   🧪 mac-intel-wk2   🧪 api-gtk
  🧪 vision-wk2   🛠 mac-safer-cpp   🛠 playstation
  🛠 tv   🧪 mac-site-isolation
  🛠 tv-sim
  🛠 watch
  🛠 watch-sim

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Reviewers

@cdumez cdumez Awaiting requested review from cdumez cdumez will be requested when the pull request is marked ready for review cdumez is a code owner
@JonWBedard JonWBedard Awaiting requested review from JonWBedard JonWBedard will be requested when the pull request is marked ready for review JonWBedard is a code owner

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@alanbaradlay alanbaradlay

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@alanbaradlay @webkit-early-warning-system