San Francisco F2F February 2019

• Host: Google
• Location: Google, 345 Spear Street, San Francisco, California, USA
• Dates: February 25-27, 2019. 9am-6pm each day.

Entrance Instructions

“Main” building, the one that you walk thru with doors to either side, rather than the one at the end of the breezeway. Take the elevator to the 7th floor. (If there are only 6 floors, you’re in the wrong building.) Ping me (Tab) or the IRC to be let in once you get there, if someone’s not already waiting to open the door for you.

The room, once you get here, is “Supergirl”.

Group Dinner

Wednesday evening, check the private list (or ask someone) for details on time and location.

Note

Wet weather is [https://www.wunderground.com/forecast/us/ca/san-francisco?cm_ven=localwx_10day

forecast] for all three days, and transit may be affected. Be prepared.

Participants

(Alphabetic order by first name)

Name	Arrival	Departure	Hotel	Flight info and notes
Alan Stearns
Amelia BR	Feb 23	Feb 28	AirBnB w/ Florian & co
Benjamin De Cock	local	n/a	n/a
Cameron McCormack	Feb 23	Mar 1	Hotel Abri
Chris Harrelson	local	n/a	n/a
Dave Cramer			Airbnb
Emil A Eklund	local	n/a	n/a	Can’t make Monday AM.
Emilio Cobos Álvarez	?	?	?	?
fantasai	local	n/a	n/a
Florian Rivoal	Feb 22	Feb 28	Airbnb
François Remy	Feb 23	Feb 28	Airbnb
Fuqiao Xue	Feb 24	Feb 28	TBD
Greg Whitworth	Feb 24	Feb 28	Hotel
Hiroshi Sakakibara	Feb 24	Mar 1	Airbnb
Hyojin Song	Feb 24	Feb 27	TBD	OZ212/OZ211
Jen Simmons	Feb 24	Mar 2
Jihye Hong	Feb 24	Feb 28	Airbnb
Koji Ishii	Feb 24	Feb 28	TBD
L. David Baron	n/a	n/a	home	[[http://www.caltrain.com/schedules/weekdaytimetable.html	Caltrain #319 or #217]]
Manuel Rego	Feb 24	Feb 27	Airbnb
Melanie Richards	Feb 26	Feb 26	N/A	AS324 / UA351
Myles C. Maxfield	I live here	I live here	My home	Pogo stick
Rachel Andrew	Feb 24	Feb 28	Marriott Fisherman’s Wharf	AA285/AA6041
Rossen Atanassov	Feb 25	Feb 28	TBD
Rune Lillesveen	Feb 24	Mar 1	Orchard Hotel
Simon Fraser	local	n/a	n/a
Tab Atkins	local
Tantek Çelik	2019-02-25	local	home	UA2123
Tess	local	n/a	n/a
Daniel Bates	local	n/a	n/a

Observers

• Christian Biesinger (Google)
• Chirag Desai
• Mason Freed (Google)
• Morten Stenshorne (Google)
• Sean Voisen (Mozilla)
• Lukasz Zbylut
• Daniel Holbert (Mozilla)
• David Grogan (Google)

Regrets

• Dael Jackson
• Dirk Schulze
• Brad Kemper ☹️
• Chris Lilley & Lea Verou (visa issues ☹️)

Agenda

• CSSWG GitHub Code of Conduct, Tantek (per examples of abusive comments on Scrollbars)
• List topic here (link to issue), Your name

Schedule

Monday morning

Values

• Add min/max constraints to CSS values grammar ( Proposal as comment on issue #355), Amelia BR
• MathML Refresh Community Group (heads up about the status of MathML), rego (please avoid Wednesday’s afternoon as I won’t be around)

Testing

• http://wptest.center/ demo from Tab

Color

• publish updated WD of css-color-4. Previous publication was FPWD in 2016. Up-to-date changes list. Issues: 38 open 52 closed. Europe-friendly time please, 09-12. ChrisL

Graphics

• Backdrop filters, Chris Harrelson (Mon/Tues)

=(at 11am)=

• 3-D transform interoperability (css-transforms-2), dbaron/mattwoodrow, mattwoodrow would like to call in (from New Zealand, so 11am PST or later, Mon/Tues)
  • transform-style changes: Bugzilla summary, #3138 (comment), #1944, #1950, #1951, #1952
  • backface-visibility:hidden - Bugzilla summary, #918

Monday afternoon

Selectors

• Error recovery in :is() :not(), Eric Willigers (remote)

• [[https://github.com/w3c/csswg-drafts/issues/2296

  [css-selectors] Selectors for “text-ish” and “button-ish” inputs]]

• [[https://github.com/w3c/csswg-drafts/issues/397

  [css-selectors] Make elements reflect CSS pseudoclasses on associated form element ]]

Pseudos

• [[https://github.com/w3c/csswg-drafts/issues/3607

  [css-pseudo-4] Identity of Element.pseudo() return value]]

• [[https://github.com/w3c/csswg-drafts/issues/3605

  [css-pseudo-4] Specify better handling of text shadows for ::selection]]

• [[https://github.com/w3c/csswg-drafts/issues/3603

  [css-pseudo-4] Should Element.pseudo(“unknown”) be an error or return null?]]

• [[https://github.com/w3c/csswg-drafts/issues/2960

  [css-pseudo-4] new generated content pseudo :between/:separator]]

Resize Observer Breakout

• https://github.com/w3c/csswg-drafts/issues/3673 Fragmentation support
• https://github.com/w3c/csswg-drafts/issues/3329#issuecomment-466737070 3329 ResizeObserverEntry shape
• https://github.com/w3c/csswg-drafts/issues/3550 Add offset pos

Other

• URL modifiers for image loading (crossorigin, preload, async), Amelia BR

Selectors again

• [[https://github.com/w3c/csswg-drafts/issues/3012

  [selectors] Solve :visited once and for all]]

Resize Observer

• Summarize breakout discussion

• https://github.com/w3c/csswg-drafts/issues/3326 Which boxes should an author be able to observe? (GregW Mon/Tues)

other

• (if times allows:) CSS Tables spec methodology, frremy
• getting images’ aspect ratio right from html attributes, fantasai (intro)

Tuesday morning

Resize Observer

• https://github.com/w3c/csswg-drafts/issues/3554 Device pixel border box removal from spec (GregW or Atotic - Tues)

SVG

• CSS properties should apply to some SVG elements as well (krit: Europe friendly time please 10am-12pm)

Shadow/Contain/Scoping

• [[https://github.com/w3c/csswg-drafts/issues/3674

  [css-shadow-parts] make clear that Shadow Parts for built-in elements should not be supported without standardization]]

• [[https://github.com/w3c/csswg-drafts/issues/3280

  [css-contain] contain: style does not seem useful.]]

• [[https://github.com/w3c/csswg-drafts/issues/1914

  [css-scoping-1] Dynamic changes of state and attributes referenced by :host-context rules are pretty hard to handle efficiently.]]

Tuesday afternoon

UI

• High Contrast, Rossen + Melanie (Tues)

3D breakout 2-3pm

UI continued

• [[https://github.com/w3c/csswg-drafts/issues/3344

  [css-ui] The computed value rules of user-select is problematic.]]

• [[https://github.com/w3c/csswg-drafts/issues/3024

  [css-ui] Unprefix ‘appearance’ and/or make the spec web-compatible]]

• Defining outline not to include descendants, heycam
• Drop navbeforescroll(demo), Jihye (Tue)
• Go for FPWD of spatial navigation, Jihye (Tue)
  • spatial navigation for novice: spec, demo
• Dark mode styling, Rune Lillesveen (Mon/Tues)

Sadness

• [[https://github.com/w3c/csswg-drafts/issues/2390

  [css-text-3] Implement or unship word-break:break-word]]

Wednesday morning

SVG breakout 9-10am

Layout

• [[https://github.com/w3c/csswg-drafts/issues/3665

  [css-grid-1] Include padding in scrollable overflow area]]

• [[https://github.com/w3c/csswg-drafts/issues/3646

  [css-grid] Consider setting base sizes to growth limits when sizing under max-content constraint]]

• [[https://github.com/w3c/csswg-drafts/issues/3268

  [css-sizing] Rethinking how to prevent overflow in a container with an explicit aspect ratio]]

Values

• [[https://github.com/w3c/csswg-drafts/issues/2331

  [css-values] Trigonometric functions]]

• [[https://github.com/w3c/csswg-drafts/issues/542

  [css-values] String concatentation]]

• [[https://github.com/w3c/csswg-drafts/issues/541

  [css-values] Add url() alias that does not accept unquoted URLs]]

Wednesday afternoon

• getting images’ aspect ratio right from html attributes, fantasai (further discussion)

• [[https://github.com/w3c/csswg-drafts/issues/861

  [css-inline] Should first/last baseline values of vertical-align belong to alignment-baseline or separate longhand?]]

• Houdini ❤️ Text
• text-wrap: multi-line
• -webkit-line-clamp compatibility issues, heycam

• [[https://github.com/w3c/csswg-drafts/issues/1072#issuecomment-465362932

  [css-multicol] How do elements between column-span and its multicol ancestor appear around the span ]], Rachel Andrew - reopened by dbaron

• [[https://github.com/w3c/csswg-drafts/issues/3224

  [css-multicol] Improve column-fill and make it backward-compatible]], Rachel Andrew - examples in the final comment

• Font matching and Unicode
• hanging preserved white space and justification, florian
• Segment Break Transformation Rules for East Asian Width property of A , fantasai
• env(doc-title), florian

Constraints

• dholbert is missing Monday, so bias layout topics to Tues/Wed
• High Contrast on Tues
• Eric is in Sydney, so schedule Error Recovery for an afternoon.
• rego is leaving early (after lunch) on Wednesday.
• smfr would prefer to avoid Wednesday
• GregW will be out most of Wednesday
• ChrisL in Europe, so prefers color, fonts, and graphics/paint issues mornings