[css-anchor-position] Computed value of `position-area`

[fantasai]

The position-area syntax has multiple syntaxes in order to accommodate different relationships to the writing mode, but it also has two syntaxes which are exactly equivalent: the start start syntax and the block-start inline-start syntax.

Should these two compute to each other? I think it would make sense to do so.

[css-meeting-bot]

The CSS Working Group just discussed [css-anchor-position] Computed value of `position-area` , and agreed to the following:

• RESOLVED: block/inline-start-end (and the self-* variants) compute to start/end or self-start/end

The full IRC log of that discussion

<bkardell> TabAtkins: the position-area property has a number of syntaxes - it has two that are exactly equivalent
<TabAtkins> start start and `block-start inline-start`
<bkardell> elika said they should be equivalent, tab doesn'thavean opinion
<bkardell> TabAtkins: which of the pair it should go to elika? opinion?
<fantasai> astearns: Should it be the shortest serialization or the most explicit one?
<bkardell> kiet: I opened this - It comes up because I am implementing and some of the tests are mismatched because webkit serializes one way, chrome another - if we have one way it's easier to write tests
<bkardell> florian: make it short if we can
<bkardell> TabAtkins: if it is already the case that multiple browsers do this, but just disagreeonwhich I would agree and say lets just use start start
<bkardell> Proposed resolution: block-start and inline-start will serialize to start start and they will compute to start start
<bkardell> kiet: this also applies to self block start...?
<bkardell> TabAtkins: yes
<TabAtkins> proposed: block/inline-start-end (and the self-* variants) compute to start/end or self-start/end
<bkardell> resolved
<bkardell> resolved: block/inline-start-end (and the self-* variants) compute to start/end or self-start/end
<bkardell> RESOLVED: block/inline-start-end (and the self-* variants) compute to start/end or self-start/end
<bkardell> !!!!