[css-inline-3] Sizing atomic inlines as initial letters

[fantasai]

We allow initial letters to be atomic inlines, but the spec isn't entirely clear on how that works. I've clarified that layout within the atomic inline isn't affected by any of the magic, however I think we also want to say that if it has auto height, that height is calculated by the initial letter properties. Opening this issue to confirm with the WG.

[css-meeting-bot]

The CSS Working Group just discussed Sizing atomic inlines as initial letters, and agreed to the following:

• RESOLVED: Atomic inline initial letter size as regular atomic inlines, except for auto sizes being calculated using the initial letter algorithm

The full IRC log of that discussion

<heycam> Topic: Sizing atomic inlines as initial letters
<heycam> github: https://github.com//issues/3231
<heycam> fantasai: an atomic inline is something like an image or an inline-block
<heycam> ... wasn't a lot of clarity on it, committed a bunch of changes saying the size as they do in normal circumstances unless it's an auto size, when we use the initial letter sizing algorithm
<fantasai> https://github.com/w3c/csswg-drafts/commit/7f135bedb7e7732e2ca042efd906a1e51d171cf9
<heycam> ... auto sizing is special, but everything else is normally as for atomic inlines
<heycam> ... wanted to run this past the WG
<heycam> florian: it's a change from being vague? or some other definition?
<heycam> fantasai: from being vague
<heycam> faceless2_: we're trying to do this right now. seems to be a good idea, looks like it will work
<heycam> Rossen_: any other opinions or objections?
<heycam> RESOLVED: Atomic inline initial letter size as regular atomic inlines, except for auto sizes being calculated using the initial letter algorithm