On 5/31/2025 10:48 AM, Jim Porter wrote:
> It *should* be supported. However, it turns out that 
> 'add-display-text-property' doesn't work right with '(margin nil)'. I 
> think the first step here should be to fix all the bugs I've found with 
> 'add-display-text-property', and then I'll work on finishing up the rest.

Ok, that was simpler than I thought. Eli, what do you think about adding 
this patch to the Emacs 30 branch? It just fixes some bugs in 
'add-display-text-property', as described in the commit message.