feat: specify abi version for generate on newer ts cli

Check tree-sitter CLI version and if > 0.20.3 and generating a parser
from grammar, use `--abi=vim.treesitter.language_version`.

Besides being able to opt-in to newer ABI benefits, this is a necessary
workaround for an upstream bug with 0.20.3, where `parser.h` is not
generated if the (optional) `--abi` flag is omitted.

lua/nvim-treesitter/health.lua

@@ -5,6 +5,7 @@ local queries = require "nvim-treesitter.query"
 local info = require "nvim-treesitter.info"
 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"]
@@ -24,13 +25,9 @@ local function install_health()
         .. " not required for :TSInstall)"
     )
   else
-    local handle = io.popen "tree-sitter  -V"
-    local result = handle:read "*a"
-    handle:close()
-    local version = vim.split(result, "\n")[1]:match "[^tree%psitter].*"
     health_ok(
       "`tree-sitter` found "
-        .. (version or "(unknown version)")
+        .. (utils.ts_cli_version() or "(unknown version)")
         .. " (parser generator, only needed for :TSInstallFromGrammar)"
     )
   end

lua/nvim-treesitter/install.lua

@@ -14,6 +14,7 @@ local lockfile = {}
 M.compilers = { vim.fn.getenv "CC", "cc", "gcc", "clang", "cl", "zig" }
 M.prefer_git = fn.has "win32" == 1
 M.command_extra_args = {}
+M.ts_generate_args = nil
 
 local started_commands = 0
 local finished_commands = 0
@@ -259,6 +260,15 @@ local function run_install(cache_folder, install_folder, lang, repo, with_sync,
       )
     end
     return
+  else
+    if not M.ts_generate_args then
+      local ts_cli_version = utils.ts_cli_version()
+      if ts_cli_version and vim.split(ts_cli_version, " ")[1] > "0.20.2" then
+        M.ts_generate_args = { "generate", "--abi", vim.treesitter.language_version }
+      else
+        M.ts_generate_args = { "generate" }
+      end
+    end
   end
   if generate_from_grammar and vim.fn.executable "node" ~= 1 then
     api.nvim_err_writeln "Node JS not found: `node` is not executable!"
@@ -308,7 +318,7 @@ local function run_install(cache_folder, install_folder, lang, repo, with_sync,
         info = "Generating source files from grammar.js...",
         err = 'Error during "tree-sitter generate"',
         opts = {
-          args = { "generate" },
+          args = M.ts_generate_args,
           cwd = compile_location,
         },
       },

lua/nvim-treesitter/utils.lua

@@ -193,4 +193,13 @@ function M.to_func(a)
   return type(a) == "function" and a or M.constant(a)
 end
 
+function M.ts_cli_version()
+  if fn.executable "tree-sitter" == 1 then
+    local handle = io.popen "tree-sitter  -V"
+    local result = handle:read "*a"
+    handle:close()
+    return vim.split(result, "\n")[1]:match "[^tree%psitter ].*"
+  end
+end
+
 return M