How do I override the default highlight group?

[Daydreamer-riri]

I wanted to override the background of terminal, but when I set SnacksNormal in my config, the highlight group changed back to link FloatNromal when I typed .

[folke]

If you want to make changes to h groups, you always should do that in a ColorScheme autocmd

[Daydreamer-riri]

Thank you for your reply. Here's what I wrote, but it doesn't work:

vim.api.nvim_create_autocmd({ "ColorScheme" }, {
  pattern = "*",
  callback = function()
    print("---------------------------------------------")
    vim.api.nvim_set_hl(0, "SnacksNormal", { guibg = nil })
  end,
})

What did I do wrong?

[folke]

{ guibg = nil } is not valid. Check the docs.

[Daydreamer-riri]

vim.api.nvim_set_hl(0, "SnacksNormal", { guibg = nil }) is works. After I opened terminal at least once and entered ':lua vim.api.nvim_set_hl(0, "SnacksNormal", {guibg = nil})', my terminal became transparent.

hl.mp4

[Daydreamer-riri]

{ guibg = nil } is not valid. Check the docs.

Sorry to ask again. Is there a way to make my bottom split terminal background transparent? I don't think this position is floating, and its highlight group link to FloatNormal is a bit strange.