[css-align-3] How to determining baseline type (alphabetic or central) when synthesizing baselines? #7578
Description
https://drafts.csswg.org/css-align-3/#synthesize-baseline
The spec is pretty clear about the writing mode to use etc, however not clear about how to interpret the text-orientation property. E.g.
<!DOCTYPE html>
<div style="display: grid; justify-items: baseline; text-orientation: sideways;">
<div style="writing-mode: vertical-rl;">hi<br>there</div>
<!-- does below this synthesize using alphabetic or central? -->
<div style="width: 50px; height: 50px; writing-mode: vertical-rl; background: lime; text-orientation: mixed;"></div>
</div>
(note ignore current rendering of all browsers here - they are wrong).
When synthesizing a baseline within a grid/flex context, do we synthesize based off the containers text-orientation, or the items?
(I think it should be the container - as this matches inline layout).