Rework nvim-treesitter to use the "newer" variant.

I still am experiencing some minor issues, when it comes to comment
placement, and inconsitencies with jsonc, for instance.
However, there's only so much one can do.

.config/nvim/lua/config/maps.lua

@@ -55,3 +55,54 @@ Map('i', '<tab>', function()
 		return string.rep(' ', spaces == 0 and tabwidth or spaces)
 	end
 end, { expr = true, desc = "smart tabulation" })
+
+
+-- set the keybind for appending in front of a comment, rather than behind.
+Map('n', 'A', function()
+	local ts = vim.treesitter                        -- get reference to treesitter
+	local buf = vim.api.nvim_get_current_buf()       -- get the current buffer id
+	local row, col = unpack(vim.api.nvim_win_get_cursor(0)) -- get cursor position
+
+	-- ensure the parser exists
+	local res = nil
+	repeat
+		-- get the parser
+		if not ts.language.get_lang(vim.bo[buf].filetype) then break end
+		local parser = ts.get_parser(buf, nil, { error = false })
+		if not parser then break end
+
+		-- query the buffer using the parser
+		local root = parser:parse()[1]:root()
+		local ok, dat = pcall(ts.query.parse, parser:lang(), [[(comment) @comment]])
+		if not ok or not dat then break end
+
+		-- set the result
+		res = { query = dat, root = root }
+	until true
+
+	-- check if we successfully made a query
+	if res then
+		-- loop through the captures from the query
+		for _, node in res.query:iter_captures(res.root, buf, row - 1, row) do
+			-- ensure the comment is on the same row as the cursor and after the cursor's column
+			local srow, scol, _, _ = node:range() -- extract the starting row and starting column
+			if srow ~= row - 1 or col >= scol then goto continue end
+
+			-- get the line text and remove trailing whitespace
+			local txt = vim.api.nvim_buf_get_lines(buf, srow, srow + 1, true)[1]:sub(0, scol)
+			txt = txt:gsub("%s*$", "")
+			local len = txt:len()
+
+			-- check if we found a match
+			if len > 0 then
+				vim.api.nvim_win_set_cursor(0, { row, len })
+				vim.cmd [[startinsert]]
+				return
+			end
+			::continue:: -- lua is stupid
+		end
+	end
+
+	-- no comment start was found, behave like normal (moves cursor to the end of the line)
+	vim.cmd [[startinsert!]]
+end, { desc = 'append end of line' })

.config/nvim/lua/plugin/nvim-treesitter.lua

@@ -2,73 +2,15 @@
 ---@type LazySpec
 return { {
 	'nvim-treesitter/nvim-treesitter', -- highlight, edit, and navigate code
-	event = 'BufReadPre',
 	build = ':TSUpdate',
-	main = 'nvim-treesitter.configs', -- set main module to use for opts
-	opts = {
-		ensure_installed = {
-			'bash', 'c', 'make', 'rust', 'diff',
-			'markdown', 'markdown_inline', 'latex',
-			'vim', 'vimdoc', 'lua', 'luadoc', 'regex',
-		},
-		auto_install = true, -- auto-install languages that are not installed
-		highlight = {
-			enable = true,
-			additional_vim_regex_highlighting = { 'ruby' }, -- some languages depend on vim's regex highlighting system for indent rules
-		},
-		indent = { enable = true, disable = { 'ruby' } },
-	},
-	config = function(_, opts)
-		require('nvim-treesitter.configs').setup(opts)
-
-		-- set the keybind for appending in front of a comment, rather than behind.
-		Map('n', 'A', function()
-			local ts = vim.treesitter          -- get reference to treesitter
-			local buf = vim.api.nvim_get_current_buf() -- get the current buffer id
-			local row, col = unpack(vim.api.nvim_win_get_cursor(0)) -- get cursor position
-
-			-- ensure the parser exists
-			local res = nil
-			repeat
-				-- get the parser
-				if not ts.language.get_lang(vim.bo[buf].filetype) then break end
-				local parser = ts.get_parser(buf, nil, { error = false })
-				if not parser then break end
-
-				-- query the buffer using the parser
-				local root = parser:parse()[1]:root()
-				local ok, dat = pcall(ts.query.parse, parser:lang(), [[(comment) @comment]])
-				if not ok or not dat then break end
-
-				-- set the result
-				res = { query = dat, root = root }
-			until true
-
-			-- check if we successfully made a query
-			if res then
-				-- loop through the captures from the query
-				for _, node in res.query:iter_captures(res.root, buf, row - 1, row) do
-					-- ensure the comment is on the same row as the cursor and after the cursor's column
-					local srow, scol, _, _ = node:range() -- extract the starting row and starting column
-					if srow ~= row - 1 or col >= scol then goto continue end
-
-					-- get the line text and remove trailing whitespace
-					local txt = vim.api.nvim_buf_get_lines(buf, srow, srow + 1, true)[1]:sub(0, scol)
-					txt = txt:gsub("%s*$", "")
-					local len = txt:len()
-
-					-- check if we found a match
-					if len > 0 then
-						vim.api.nvim_win_set_cursor(0, { row, len })
-						vim.cmd [[startinsert]]
-						return
+	lazy = false,
+	config = function()
+		Autocmd('FileType', {
+			pattern = require('nvim-treesitter').get_available(),
+			callback = function(ft)
+				require('nvim-treesitter').install(ft.match)
+				pcall(vim.treesitter.start)
 			end
-					::continue:: -- lua is stupid
-				end
-			end
-
-			-- no comment start was found, behave like normal (moves cursor to the end of the line)
-			vim.cmd [[startinsert!]]
-		end, { desc = 'append end of line' })
+		})
 	end,
 } }