C/C++ Extra

lang.c adds C and C++ language support through clangd, with clang-format for formatting. Project configuration stays in the repository — use .clang-format, .clangd, and compile_commands.json for project policy.

Enable it

-- ~/.config/blak/lua/blak/user.lua
return {
  extras = {
    enabled = {
      "lang.c",
    },
  },
}

Or enable it interactively:

:BlakExtras enable lang.c

What it adds

Surface	Contribution
Treesitter	c, cpp
Mason	clang-format
LSP	clangd
Formatting	clang_format for c, cpp, objc, objcpp, cuda

clangd installs automatically through Mason; only the standalone formatter needs a Mason entry.

Configure clangd

Add clangd settings under lsp.servers.clangd:

return {
  extras = { enabled = { "lang.c" } },
  lsp = {
    servers = {
      clangd = {
        cmd = { "clangd", "--background-index", "--clang-tidy" },
      },
    },
  },
}

clangd ships its own clang-tidy integration, so Blak does not register a separate linter for C/C++.

Install and verify

:BlakToolsInstall
:BlakTreesitterInstall
:BlakDoctor

Open a C or C++ file and check :LspInfo for clangd. clangd works best with a compile_commands.json (generate it with CMake’s CMAKE_EXPORT_COMPILE_COMMANDS or with Bear).