Check first (n?) characters of a suggestion

[doggobit0]

So I probably hate myself more than most people and want to use <Tab> for completions :)

But I'm trying to dynamically check if the first (few?) characters of a suggestion are \t, in which case I'll simply passthrough the Tab key. I am sort of able to do this right now with suggestion.accept(<function>), but I think it'd be a quick and user friendly addition to either provide a method to get the first (n?) chars of a suggestion, or take in a string and match it against its text. E.g.:

local first_5 = suggestion.get_n_chars(5)
-- or
local starts_with_tab = suggestion.startswith('\t')

Anyway, cheers for the amazing plugin!

[doggobit0]

P.S. If any unfortunate soul also has this same bad idea, here's how I ended up doing it; I'm not sure if it's the best way to do it, but it works :)

vim.keymap.set("i", "<Tab>", function()
	local suggestion = require("copilot.suggestion")

	if suggestion.is_visible() then
		suggestion.accept(function(suggestion)
			local current_char = suggestion.position.character
			local first_char = suggestion.text:sub(current_char + 1, current_char + 1)

			if first_char == '\t' then
				suggestion.text = string.rep("\t", current_char + 1)
				suggestion.range["end"].character = current_char + 1
				return suggestion
			end

			return suggestion
		end)
		return ""
	end

	return vim.api.nvim_replace_termcodes("<Tab>", true, false, true)
end, { expr = true, silent = true })

If you're using spaces as indents, you can probably easily adapt it :)