[css-align] Define align-content: baseline for flex containers #3005
Description
Spec link: https://drafts.csswg.org/css-align/#baseline-align-content
This text has multiple references to the item's "inline axis" -- e.g.
Flex Items:
A flex item participates in first (last) baseline content-alignment in its flex line if its computed align-content is first baseline (last baseline) and its inline axis is parallel to the main axis.
Grid Items:
A grid item participates in first (last) baseline content-alignment in its startmost (endmost) row or column (whichever is parallel to its inline axis) and if its computed align-content is first baseline (last baseline).
To me, this reliance on the item's "inline axis" indicates that there's an assumption that "align-content" will always be having an impact that is orthogonal to the item's inline axis (i.e. shifting its contents up or down, in a horizontal-tb writing mode).
However: if the item happens to be a flex container with flex-direction:column, then align-content operates in the opposite axis from what it would normally operate in. (i.e. it would shift contents right or left, in a horizontal-tb writing mode)
So it seems odd that there's a dependency on the element's inline axis in particular -- I think perhaps this spec text really means to say "inline axis [or main axis, if the item is a flex container]"?
Caveat: I haven't implemented this align-content:baseline behavior yet, for flexbox -- I'm just trying to wrap my mind around how it should work.