refactor!: update to Neovim 0.7 APIs

* set highlight groups via nvim_set_hl
* define autocommands via nvim_create_autocmd
* port plugin/nvim-treesitter.vim to Lua
* port healthcheck to Lua

lua/nvim-treesitter/configs.lua

@@ -100,8 +100,13 @@ local function enable_mod_conf_autocmd(mod)
     return
   end
 
-  local cmd = string.format("lua require'nvim-treesitter.configs'.reattach_module('%s')", mod)
-  api.nvim_command(string.format("autocmd NvimTreesitter FileType * %s", cmd))
+  api.nvim_create_autocmd("FileType", {
+    group = "NvimTreesitter",
+    callback = function()
+      require("nvim-treesitter.configs").reattach_module(mod)
+    end,
+    desc = "Reattach module",
+  })
 
   config_mod.loaded = true
 end
@@ -150,7 +155,7 @@ local function disable_mod_conf_autocmd(mod)
   end
   -- TODO(kyazdani): detach the correct autocmd... doesn't work when using %s, cmd.
   -- This will remove all autocomands!
-  api.nvim_command "autocmd! NvimTreesitter FileType *"
+  api.nvim_clear_autocmds { event = "FileType", group = "NvimTreesitter" }
   config_mod.loaded = false
 end
 

lua/nvim-treesitter/health.lua

@@ -7,29 +7,26 @@ local shell = require "nvim-treesitter.shell_command_selectors"
 local install = require "nvim-treesitter.install"
 local utils = require "nvim-treesitter.utils"
 
-local health_start = vim.fn["health#report_start"]
-local health_ok = vim.fn["health#report_ok"]
-local health_error = vim.fn["health#report_error"]
-local health_warn = vim.fn["health#report_warn"]
+local health = require "health"
 
 local M = {}
 
 local NVIM_TREESITTER_MINIMUM_ABI = 13
 
 local function install_health()
-  health_start "Installation"
+  health.report_start "Installation"
 
   if fn.has "nvim-0.7" == 0 then
-    health_error "Nvim-treesitter requires Neovim 0.7.0+"
+    health.report_error "Nvim-treesitter requires Neovim 0.7.0+"
   end
 
   if fn.executable "tree-sitter" == 0 then
-    health_warn(
+    health.report_warn(
       "`tree-sitter` executable not found (parser generator, only needed for :TSInstallFromGrammar,"
         .. " not required for :TSInstall)"
     )
   else
-    health_ok(
+    health.report_ok(
       "`tree-sitter` found "
         .. (utils.ts_cli_version() or "(unknown version)")
         .. " (parser generator, only needed for :TSInstallFromGrammar)"
@@ -37,7 +34,7 @@ local function install_health()
   end
 
   if fn.executable "node" == 0 then
-    health_warn(
+    health.report_warn(
       "`node` executable not found (only needed for :TSInstallFromGrammar," .. " not required for :TSInstall)"
     )
   else
@@ -45,21 +42,21 @@ local function install_health()
     local result = handle:read "*a"
     handle:close()
     local version = vim.split(result, "\n")[1]
-    health_ok("`node` found " .. version .. " (only needed for :TSInstallFromGrammar)")
+    health.report_ok("`node` found " .. version .. " (only needed for :TSInstallFromGrammar)")
   end
 
   if fn.executable "git" == 0 then
-    health_error("`git` executable not found.", {
+    health.report_error("`git` executable not found.", {
       "Install it with your package manager.",
       "Check that your `$PATH` is set correctly.",
     })
   else
-    health_ok "`git` executable found."
+    health.report_ok "`git` executable found."
   end
 
   local cc = shell.select_executable(install.compilers)
   if not cc then
-    health_error("`cc` executable not found.", {
+    health.report_error("`cc` executable not found.", {
       "Check that any of "
         .. vim.inspect(install.compilers)
         .. " is in your $PATH"
@@ -67,7 +64,7 @@ local function install_health()
     })
   else
     local version = vim.fn.systemlist(cc .. (cc == "cl" and "" or " --version"))[1]
-    health_ok(
+    health.report_ok(
       "`"
         .. cc
         .. "` executable found. Selected from "
@@ -77,7 +74,7 @@ local function install_health()
   end
   if vim.treesitter.language_version then
     if vim.treesitter.language_version >= NVIM_TREESITTER_MINIMUM_ABI then
-      health_ok(
+      health.report_ok(
         "Neovim was compiled with tree-sitter runtime ABI version "
           .. vim.treesitter.language_version
           .. " (required >="
@@ -85,7 +82,7 @@ local function install_health()
           .. "). Parsers must be compatible with runtime ABI."
       )
     else
-      health_error(
+      health.report_error(
         "Neovim was compiled with tree-sitter runtime ABI version "
           .. vim.treesitter.language_version
           .. ".\n"
@@ -141,9 +138,9 @@ function M.check()
          x) errors found in the query, try to run :TSUpdate {lang}]]
   table.insert(parser_installation, legend)
   -- Finally call the report function
-  health_start(table.concat(parser_installation, "\n"))
+  health.report_start(table.concat(parser_installation, "\n"))
   if #error_collection > 0 then
-    health_start "The following errors have been detected:"
+    health.report_start "The following errors have been detected:"
     for _, p in ipairs(error_collection) do
       local lang, type, err = unpack(p)
       local lines = {}
@@ -164,7 +161,7 @@ function M.check()
           end
         end
       end
-      health_error(table.concat(lines, "\n"))
+      health.report_error(table.concat(lines, "\n"))
     end
   end
 end

lua/nvim-treesitter/indent.lua

@@ -195,7 +195,10 @@ local indent_funcs = {}
 function M.attach(bufnr)
   indent_funcs[bufnr] = vim.bo.indentexpr
   vim.bo.indentexpr = "nvim_treesitter#indent()"
-  vim.api.nvim_command("au Filetype " .. vim.bo.filetype .. " setlocal indentexpr=nvim_treesitter#indent()")
+  vim.api.nvim_create_autocmd("Filetype", {
+    pattern = vim.bo.filetype,
+    command = "setlocal indentexpr=nvim_treesitter#indent()",
+  })
 end
 
 function M.detach(bufnr)

lua/nvim-treesitter/info.lua

@@ -115,21 +115,24 @@ local function print_info_modules(parserlist, module)
 
   api.nvim_buf_set_option(curbuf, "modified", false)
   api.nvim_buf_set_option(curbuf, "buftype", "nofile")
-  api.nvim_exec(
-    [[
-    syntax match TSModuleInfoGood      /✓/
-    syntax match TSModuleInfoBad       /✗/
-    syntax match TSModuleInfoHeader    /^>>.*$/ contains=TSModuleInfoNamespace
-    syntax match TSModuleInfoNamespace /^>> \w*/ contained
-    syntax match TSModuleInfoParser    /^[^> ]*\ze /
-    highlight default TSModuleInfoGood guifg=LightGreen gui=bold
-    highlight default TSModuleInfoBad  guifg=Crimson
-    highlight default link TSModuleInfoHeader    Type
-    highlight default link TSModuleInfoNamespace Statement
-    highlight default link TSModuleInfoParser    Identifier
-  ]],
-    false
-  )
+  vim.cmd [[
+  syntax match TSModuleInfoGood      /✓/
+  syntax match TSModuleInfoBad       /✗/
+  syntax match TSModuleInfoHeader    /^>>.*$/ contains=TSModuleInfoNamespace
+  syntax match TSModuleInfoNamespace /^>> \w*/ contained
+  syntax match TSModuleInfoParser    /^[^> ]*\ze /
+  ]]
+
+  local highlights = {
+    TSModuleInfoGood = { fg = "LightGreen", bold = true, default = true },
+    TSModuleInfoBad = { fg = "Crimson", default = true },
+    TSModuleInfoHeader = { link = "Type", default = true },
+    TSModuleInfoNamespace = { link = "Statement", default = true },
+    TSModuleInfoParser = { link = "Identifier", default = true },
+  }
+  for k, v in pairs(highlights) do
+    api.nvim_set_hl(0, k, v)
+  end
 end
 
 local function module_info(module)