[css-lists-3][css-counter-styles-3] Request a way for list markers & counters to use "order-modified document order"

[jonjohnjohnson]

https://drafts.csswg.org/css-lists-3/
https://drafts.csswg.org/css-counter-styles-3/

Recently came upon a case where in a flex container I'm using order to manipulate an order-modified-document-order but then markers/counters are rendered useless since they use the document source order.

How about a property that can be set on the parent of the list items which calculates the "list order"? Maybe something like a list-order: modified?

[AmeliaBR]

order is only supposed to be used for layout, not for "sorting" or anything that changes the intended reading order of content:

Authors must use order only for visual, not logical, reordering of content. Style sheets that use order to perform logical reordering are non-conforming.

If you want a solution to make it easier to re-order a list in a way that actually re-orders it from a (possibly flattened) DOM perspective, you need to take it up with HTML/DOM. E.g., see whatwg/dom#586 for one proposal.

[jonjohnjohnson]

Can't say I completely agree for all cases, but I do understand the motivations.

The problem with this is that the re-ordering isn't reflected in the accessibility tree or in the navigation order: CSS deliberately forbids this, since the point of this property was to create a divergence between the visual positioning and logical ordering of the elements.* Our continued position is that semantic ordering belongs in the source. - @fantasai - whatwg/dom#586