Is there a way to show all posts on one page?

[Scalemotorcars]

I had a template edit mod with 3.8 to show all posts from a thread on a single page using (showall=1) but this function no longer works with 4.0. Is there a way to still do this?

The hold hack.
https://vborg.vbsupport.ru/showthread.php?t=258704