> I was experimenting with implementing a treesitter based mode for VHDL and
> I wanted to have a proper folding mechanism for the mode. Since I like
> outline for folding I was wondering if there is a way to integrate it with
> the syntax parsing. Asking here if it can be done and how I might go about
> doing it?

That would be great.  And now this is possible to do by using the new
function 'outline-search-function'.  You can set it to a function
that uses treesitter to find the next outlines.