feat: rewrote the plugin in lua too, use lua if nvim

lua/combo.lua

@@ -0,0 +1,127 @@
+--[[
+
+COMBO Counter
+
+]]--
+
+-- Check if already loaded
+if vim.g.combo_tracker_already_loaded then
+	return
+end
+
+vim.g.combo_tracker_already_loaded = true
+vim.g.combo_timeout = 1.0 -- seconds
+
+-- Check for a 'combo' folder, make one if missing
+local separator = '/'
+if vim.fn.has('win32') ~= 0 then
+	separator = '\\'
+end
+local combo_path = vim.fn.stdpath("data") .. separator .. "combo"
+local ok, err, code = os.rename(combo_path, combo_path)
+if not ok then
+	if code == 13 then
+		print("[!] could not find or create combo folder")
+		print(err)
+		return
+	else
+		vim.fn.mkdir(combo_path, "p")
+	end
+end
+
+-- Set globals
+vim.g.combo_enabled = true
+vim.g.combo_counter = 0
+vim.g.best_combo = 0
+vim.g.best_last_combo = 0
+vim.g.combo = ""
+
+vim.g.last_combo = vim.fn.reltimefloat(vim.fn.reltime())
+
+vim.g.combo_file = combo_path .. separator .. 'none'
+
+-- Define necessary functions
+
+local function combo_fmt()
+	if not vim.g.combo_enabled then return "" end
+	return string.format("%d|%d", vim.g.best_combo, vim.g.combo_counter)
+end
+
+local function save_combo()
+	if not vim.g.combo_enabled then return end
+	if vim.g.combo_counter > vim.g.best_combo then
+		vim.fn.writefile({vim.g.combo_counter}, vim.g.combo_file)
+		vim.g.best_last_combo = vim.g.best_combo
+		vim.g.best_combo = vim.g.combo_counter
+	end
+end
+
+local function reload_combo_file()
+	if not vim.g.combo_enabled then return end
+	vim.g.combo_file_type = vim.opt.filetype._value
+	if vim.g.combo_file_type then
+		vim.g.combo_file = combo_path .. separator .. vim.g.combo_file_type
+	end
+	vim.g.best_combo = 0
+	if vim.fn.filereadable(vim.g.combo_file) ~= 0 then
+		local contents = vim.fn.readfile(vim.g.combo_file)
+		if contents ~= nil then
+			vim.g.best_combo = tonumber(contents[1])
+		end
+	end
+	vim.g.best_last_combo = vim.g.best_combo
+	vim.g.combo = combo_fmt()
+end
+
+local function update_combo()
+	if not vim.g.combo_enabled then return end
+	if vim.fn.reltimefloat(vim.fn.reltime(vim.g.last_combo)) > vim.g.combo_timeout then
+		save_combo()
+		vim.g.combo_counter = 1
+	else
+		vim.g.combo_counter = vim.g.combo_counter + 1
+	end
+	vim.g.combo = combo_fmt()
+	vim.g.last_combo = vim.fn.reltime()
+end
+
+-- Define user-facing functions
+
+function ComboToggle()
+	vim.g.combo_enabled = not vim.g.combo_enabled
+	vim.g.combo = combo_fmt()
+end
+
+function ComboEnable()
+	vim.g.combo_enabled = true
+	vim.g.combo = combo_fmt()
+end
+
+function ComboDisable()
+	vim.g.combo_enabled = false
+	vim.g.combo = combo_fmt()
+end
+
+function ComboCheated()
+	vim.g.best_combo = vim.g.best_last_combo
+	vim.g.combo_counter = vim.g.best_last_combo
+	vim.fn.writefile({vim.g.combo_counter}, vim.g.combo_file)
+end
+
+local vim_combo_group = vim.api.nvim_create_augroup("VimComboGroup", {clear=true})
+vim.api.nvim_create_autocmd({ "FileType" }, { pattern={"*"}, callback=reload_combo_file, group=vim_combo_group })
+vim.api.nvim_create_autocmd({ "TextChangedI", "TextChangedP" }, { callback=update_combo, group=vim_combo_group })
+vim.api.nvim_create_autocmd({ "InsertLeave"}, { callback=save_combo, group=vim_combo_group })
+
+local function decrease_bs()
+	vim.g.combo_counter = vim.g.combo_counter - 1
+	return "<BS>"
+end
+vim.keymap.set('i', '<BS>', decrease_bs, {expr=true})
+
+local function decrease_del()
+	vim.g.combo_counter = vim.g.combo_counter - 1
+	return "<DEL>"
+end
+vim.keymap.set('i', '<DEL>', decrease_del, {expr=true})
+

plugin/vim-combo.vim

@@ -1,5 +1,16 @@
 " COMBO Counter
 
+if has('nvim')
+	lua require('combo')
+	
+	command Cheated lua ComboCheated()
+	command ComboEnable lua ComboEnable()
+	command ComboDisable lua ComboDisable()
+	command ComboToggle lua ComboToggle()
+
+	finish
+endif
+
 " Check if already loaded
 if exists('g:combo_tracker_already_loaded')
 	finish
@@ -17,14 +28,14 @@ endif
 function ComboFmt()
 	return printf("combo|%d [best|%d]", g:combo_counter, g:best_combo)
 endfunction
-"
+
 " Declare variables
-let g:combo_counter = 0		" The actual combo variable
-let g:best_combo = 0		" Where best score for filetype is tracked
-let g:best_last_combo = 0	" Used to revert, when you cheat by accident
+let g:combo_counter = 0      " The actual combo variable
+let g:best_combo = 0         " Where best score for filetype is tracked
+let g:best_last_combo = 0    " Used to revert, when you cheat by accident
 let g:combo_timeout = 1
 let g:combo = ComboFmt()
-let g:last_combo = reltime()	" Set current time as last combo time
+let g:last_combo = reltime() " Set current time as last combo time
 let g:combo_file = $HOME . '/.vim/.combo/none.cmb'
 
 " Get extension, choose combo file