"Changes since the 4 June 2020 Working Draft include:...Reworked the relationship of the earlier line-sizing and leading-trim proposals to create text-edge and a differently-structured leading-trim. (Issue 5168)" (https://drafts.csswg.org/css-inline-3/#changes). Perhaps text-edge and leading-trim could be added for future support in safe way.
"Changes since the 4 June 2020 Working Draft include:...Reworked the relationship of the earlier line-sizing and leading-trim proposals to create text-edge and a differently-structured leading-trim. (Issue 5168)" (https://drafts.csswg.org/css-inline-3/#changes). Perhaps
text-edgeandleading-trimcould be added for future support in safe way.