fix: adapt to Nvim 0.11 deprecations

lua/nvim-treesitter/compat.lua

@@ -24,4 +24,16 @@ function M.get_node_text(node, bufnr)
   return (ts.get_node_text or tsq.get_node_text)(node, bufnr)
 end
 
+function M.require_language(lang, opts)
+  return (ts.language.add or ts.language.require_language)(lang, opts)
+end
+
+function M.flatten(t)
+  if vim.fn.has "nvim-0.10" then
+    return vim.iter(t):flatten():totable()
+  else
+    return vim.tbl_flatten(t)
+  end
+end
+
 return M

lua/nvim-treesitter/install.lua

@@ -7,6 +7,7 @@ local parsers = require "nvim-treesitter.parsers"
 local info = require "nvim-treesitter.info"
 local configs = require "nvim-treesitter.configs"
 local shell = require "nvim-treesitter.shell_command_selectors"
+local compat = require "nvim-treesitter.compat"
 
 local M = {}
 
@@ -59,7 +60,7 @@ local function reattach_if_possible_fn(lang, error_on_fail)
           local ft = vim.bo[buf].filetype
           ok, err = pcall(vim.treesitter.language.add, lang, { filetype = ft })
         else
-          ok, err = pcall(vim.treesitter.language.require_language, lang)
+          ok, err = pcall(compat.require_language, lang)
         end
         if not ok and error_on_fail then
           vim.notify("Could not load parser for " .. lang .. ": " .. vim.inspect(err))
@@ -535,7 +536,7 @@ local function install(options)
       languages = parsers.available_parsers()
       ask = false
     else
-      languages = vim.tbl_flatten { ... }
+      languages = compat.flatten { ... }
       ask = ask_reinstall
     end
 
@@ -573,7 +574,7 @@ function M.update(options)
     reset_progress_counter()
     if ... and ... ~= "all" then
       ---@type string[]
-      local languages = vim.tbl_flatten { ... }
+      local languages = compat.flatten { ... }
       local installed = 0
       for _, lang in ipairs(languages) do
         if (not is_installed(lang)) or (needs_update(lang)) then
@@ -616,7 +617,7 @@ function M.uninstall(...)
     ensure_installed_parsers = utils.difference(ensure_installed_parsers, configs.get_ignored_parser_installs())
 
     ---@type string[]
-    local languages = vim.tbl_flatten { ... }
+    local languages = compat.flatten { ... }
     for _, lang in ipairs(languages) do
       local install_dir, err = configs.get_parser_install_dir()
       if err then

lua/nvim-treesitter/shell_command_selectors.lua

@@ -152,7 +152,7 @@ function M.select_compile_command(repo, cc, compile_location)
       info = "Compiling...",
       err = "Error during compilation",
       opts = {
-        args = vim.tbl_flatten(M.select_compiler_args(repo, cc)),
+        args = require("nvim-treesitter.compat").flatten(M.select_compiler_args(repo, cc)),
         cwd = compile_location,
       },
     }

lua/nvim-treesitter/utils.lua

@@ -83,7 +83,7 @@ function M.setup_commands(mod, commands)
     local f_args = def.f_args or "<f-args>"
     local call_fn =
       string.format("lua require'nvim-treesitter.%s'.commands.%s['run<bang>'](%s)", mod, command_name, f_args)
-    local parts = vim.tbl_flatten {
+    local parts = require("nvim-treesitter.compat").flatten {
       "command!",
       "-bar",
       def.args,

tests/indent/common.lua

@@ -180,7 +180,7 @@ function Runner:whole_file(dirs, opts)
     assert.is.same(1, vim.fn.isdirectory(dir.filename))
     return dir.filename
   end, dirs)
-  local files = vim.tbl_flatten(vim.tbl_map(scan_dir, dirs))
+  local files = require("nvim-treesitter.compat").flatten(vim.tbl_map(scan_dir, dirs))
   for _, file in ipairs(files) do
     local relpath = Path:new(file):make_relative(self.base_dir.filename)
     self.it(relpath, function()