Snippets not triggering on commented line in typst file

[shivangp76]

I'm not sure why, but snippets are not triggering inside commented lines inside a typst file. They do work in other filetypes.

For example, creating a file called typst.lua with the following content and loading it does not work when the cursor is in a commented line. Renaming this file to all.lua allows this snippet to work in commented lines. I tried naming this file rust.lua and then the snippet did trigger inside a comment in a rust file, so I'm unsure what is causing this behavior.

local ls = require("luasnip")
local s = ls.snippet
local t = ls.text_node
return {
  s({
      trig = "bad",
      snippetType = "autosnippet",
    },
    t("1")
  ),
}

[L3MON4D3]

Ah, I think this may be because you use the filetypes from treesitter and (check your ft_func!) and typst comments' filetype is not typst but something like comment (you can check this using :InspectTree, where you can press I to see the language of every node), and rust's treesitter grammar does not do this.

What exactly a fix for this looks like depends on your usecase, you could for example simply add the snippet to the language that treesitter reports for comments in typst :)

[shivangp76]

Thank you! I was using require('luasnip.extras.filetype_functions').from_pos_or_filetype for ft_func.

I have a bunch of snippets for typst so it wouldn't be optimal for maintenance to copy them to the comment filetype snippets. Adding ls.filetype_extend("comment", { "typst" }) seems to work, but I think this might have unintended consequences in other files. Is there a better solution? I just want to override the comment filetype in typst files, not all files.

[bew]

If you're using the comment parser only to highlight keywords like TODO/FIXME/NOTE/.... I'd highly suggest to stop using that so comments still have the filetype of the normal file, and use something like mini.hipatterns to do the highlights.

This is personally the setup I have and it's awesome (I also have a lot of custom other highlights with that plugin, works flawlessly)