TPAC 2018

Place, Logistics, etc.

• https://www.w3.org/2018/10/TPAC/
• full TPAC week is 22-26 October 2018
• CSS WG meeting days are Mon-Tue 22-23 from 9am to 6pm
• Houdini meeting is Thu 25 October from 09:00-???
• Lyon, France at the Lyon Convention Center
• Monday night developer meetup (requires registration)
• Jiminy Panoz, a Lyon resident (and friend of EPUB and CSS), has posted a guide to Lyon for TPAC attendees

Participants

Please, put your name in this table if you plan to participate (alphabetical order by given name):

Name	Arrival	Departure	Hotel	Flight info and notes	Conflicts
Alan Stearns
Chris Lilley	Sunday	Sunday
Dave Cramer	Sunday	Friday			PWG most of Tuesday
Dominik Röttsches	Sunday evening	Thursday evening	Marriott Cité Internationale
Emil A Eklund	Sunday 16:45	Saturday 06:50	Marriott Cité Internationale	BA284+BA362 / BA365+BA285
Eric Willigers	Saturday	Sunday	Crowne Plaza Lyon
fantasai	Monday 8:50am	Friday-ish			Early Monday Morning
Florian Rivoal	Sunday	Sunday	Temporim Lyon Cité Internationale		at AC meeting 15h00-17h00 Tuesday
François REMY	Sunday	TBD
Hiroshi Sakakibara	Sunday	Saturday
Jen Simmons	Sunday	Thursday	Marriott
Jihye Hong	Sunday	Saturday	ibis		Early Monday afternoon
Lea Verou	Sunday	Sunday
L. David Baron	Saturday 16:00	Saturday 17:04	Hôtel le Roosevelt	AF83+TGV5119 / TGV6626	probably at TAG roughly 09h00-10h00 Monday; at AC meeting 15h00-17h00 Tuesday
Majid Valipour	Sunday	Friday	AirBnB
Manuel Rego	Sunday	Thursday’s night
Melanie Richards	Saturday	Sunday	Crown Plaza
Myles C. Maxfield
Rachel Andrew	Sunday 16:45	Saturday 06:50	Marriott	BA362, BA365
Rakina Amni
Rossen Atanassov	Sunday	Friday	Crowne Plaza
Rune Lillesveen	Sunday	Friday-ish
Simon Fraser	?	?
Surma	Sunday	Saturday	Crowne Plaza
Tab Atkins	?	?	?
Tantek Çelik	Monday	Thursday	Hôtel le Roosevelt
Fuqiao Xue	Sunday	Saturday
Chris Harrelson	Saturday	Saturday
Dirk Schulze

Regrets:

- …

See also the current https://www.w3.org/2002/09/wbs/35125/TPAC2018/registrants [member-only].

Proposed Agenda

Schedule

Monday

Morning

(9am schedule wrangling and introductions)

• Accessibility API Mappings (https://w3c.github.io/html-aam/) - What it is, how it matters to CSS, when we need to ping a11y people about implications. Focus on display:contents being unexpectedly troublesome. – Alice Boxhall
• Identify new people to represent the CSSWG in the CSS a11y task force
• [css-break-4] control space before element depending on page position: https://github.com/w3c/csswg-drafts/issues/253

10am - Break

• [css-align] gap properties for block layout: https://github.com/w3c/csswg-drafts/issues/3068
• css-multicol
  • What happens to the mbp of the empty fragment created by a spanner being first-child of an element: https://github.com/w3c/csswg-drafts/issues/2552
  • Margin collapsing does not make sense with column-spans: https://github.com/w3c/csswg-drafts/issues/2203
  • Improve column-fill and make it backward-compatible: https://github.com/w3c/csswg-drafts/issues/3224

• Css-text-3:
  • Revisit text-align shorthanding text-align-last: https://github.com/w3c/csswg-drafts/issues/3117
  • word-wrap/overflow-wrap: break-word should affect min-content https://github.com/w3c/csswg-drafts/issues/2682
• Text-4
  • Allow letter-spacing to have unitless values like line-height: https://github.com/w3c/csswg-drafts/issues/2165
  • [css-text-4] Text-spacing is too strict

12pm - Lunch

Afternoon

• [css-flexbox] Investigate applying align-content to single-line flex containers: https://github.com/w3c/csswg-drafts/issues/3052

• Initial Letter Layout Model and other CSS Inline Layout Issues (could this happen Monday? –dauwhe)
  • Should first/last baseline values of `vertical-align` belong to `alignment-baseline` or separate longhand? https://github.com/w3c/csswg-drafts/issues/861
  • better name for initial-letters property: https://github.com/w3c/csswg-drafts/issues/2950

• Css-overflow-3
  • Intrinsic sizing of elements with continue:discard https://github.com/w3c/csswg-drafts/issues/3214
  • Define the behavior of overly long block ellipsis strings https://github.com/w3c/csswg-drafts/issues/3213
  • block-overflow, ::first-line, and ::first letter https://github.com/w3c/csswg-drafts/issues/2906
  • Allowing (or not) alternate ellipsis behavior for block-overflow https://github.com/w3c/csswg-drafts/issues/2905

3pm - Joint meeting with the Math on Web Pages CG

• vertically align to nth-child: https://github.com/w3c/csswg-drafts/issues/1339

3:30pm - break

4pm - Joint meeting with WPT

• Scroll-linked Animations - Spec is on WICG and Blink now has a partial experimental implementation (majidvp@ can demo). Gathering status and see if there is interest in moving it (or a subset) forward.

• CSS-UI
  • fieldset/legend (https://github.com/w3c/csswg-drafts/issues/3094)—Florian
  • Dark mode and native form controls (discussion)—fremy
  • Should we define outline more tightly and aim for close interop, or leave it open to UI innovation? (see 3184 for a recent example, but also the spec is full of “may”)—Florian

Tuesday

Morning

(start at 9am - the room will be occupied until then)

• Spatial Navigation — Jihye and Florian (prefers Tuesday, not during AC meeting, definitely avoid Monday early afternoon and avoid from 5pm Tuesday)
• css-fonts-4
  • src: local() font unique name matching ambiguous & restricts matched locale https://github.com/w3c/csswg-drafts/issues/3177
• [css-overscroll-behavior] Moving spec to FPWD. This was recently migrated from WICG.
• aspect-ratio draft proposal: https://drafts.csswg.org/css-sizing-4/#ratios

10am - Break

• [css-shadow-parts] confirm browser support (Tuesday): https://github.com/w3c/csswg-drafts/issues/2368

11am - Joint meeting with i18n

• Propose adding lang as a font-face descriptor ideally with I18n Core
• [css-logical] Flow-relative syntax for `margin`-like shorthands: https://github.com/w3c/csswg-drafts/issues/1282

12pm - Lunch

Afternoon

• Environment Variables spec - path to fpwd?
• Constructable Stylesheets (Tuesday) – Rakina & Eric & Tab
  • Can the same constructed stylesheet be used in two different Documents?
  • Need to define what fetch groups various loads from the sheet go in
  • Can we use CSSStyleSheets from <style>/<link> in adoptedStyleSheets?
  • Should we use FrozenArray instead of StyleSheetList for adoptedStyleSheets
  • Should this spec move from WICG to CSS WG?
  • Blink is interested in shipping.
• CSS-UI
  • Path forward for the appearance property (https://github.com/w3c/csswg-drafts/issues/3024)—Florian

3:30pm - break

• Scrollbar Styling - FPWD, experimental implementation(s), and maybe even demo(s)?
  • getComputedStyle and scrollbar-color
• Effect of filter element on root element https://github.com/w3c/fxtf-drafts/issues/282 –chrishtr
• backdrop-filter spec issues: https://github.com/w3c/fxtf-drafts/issues/53
• Text-decoration
  • text-underline-offset
  • Rename text-decoration-width?
• [CSS-cascade] import only in moment when we need it: https://github.com/w3c/csswg-drafts/issues/3050
• [css-conditional-4] selector() feature query function for selector support: https://github.com/w3c/csswg-drafts/issues/3207
• [selectors4] Name the “functional pseudo-class like :matches() with 0 specificity”: https://github.com/w3c/csswg-drafts/issues/2143

Thursday

Houdini