Customizing Function and Identifier highlight groups does not work as expected

[dbozbay]

Description

Hi there! I'm encountering an issue where customizing the Function and Identifier highlight groups doesn't seem to work as expected. Specifically, while I can successfully change the Comment highlight group, attempts to customize Function and Identifier have no effect.

Steps to Reproduce

1. Install onedarkpro.nvim and set up the configuration as shown below:

return {
    "olimorris/onedarkpro.nvim",
    priority = 1000,
    enable = true,
    config = function()
        require("onedarkpro").setup({
            highlights = {
                Identifier = { fg = "#FFFFFF" },
                Function = { fg = "#FFFFFF" },
                Comment = { fg = "#FFFFFF", italic = true },
            },
        })
        vim.cmd("colorscheme onedark")
    end,
}

2. After reloading Neovim, open a Python file (or any other file type with functions, variables and treesitter support).

3. Notice that the Comment highlight is correctly set to white (#FFFFFF))) and italicised, but the Function and Identifier highlight groups remain unchanged.

Expected Behaviour: The Function and Identifier highlight groups should change to the specified color (#FFFFFF in this case), just like the Comment group.

Actual Behaviour: Only the Comment highlight is updated to the new color, while Function and Identifier remain unchanged.

Screenshot:

[olimorris]

https://github.com/olimorris/onedarkpro.nvim#question-faqs and :Inspect. This will tell you what's overwriting it

[dbozbay]

The groups seem fine. Still not sure why my Identifier and Function configs are not working?

[olimorris]

Because the highlight group is called @function and not Function