synstack is always empty

Question

Whenever I do :echo synstack(line("."), col(".")) it prints []

I've tried this in html and svelte files in my neovim with treesitter, in neovim with -u NONE, and in Vim 9 with -u NONE. All of them just returning [] all the time.

How am I meant to be able to check synstack?

Answer 1

I believe Treesitter is not working with syntax and hence synstack is helpless.

To analyse the syntax result of Treesitter you can use tresitter-playground.