[Bug]: Can not use inline in C++ buffer

[mars90226]

Your minimal.lua config

---@diagnostic disable: missing-fields

--NOTE: Set config path to enable the copilot adapter to work.
--It will search the follwoing paths for the for copilot token:
--  - "$CODECOMPANION_TOKEN_PATH/github-copilot/hosts.json"
--  - "$CODECOMPANION_TOKEN_PATH/github-copilot/apps.json"
vim.env["CODECOMPANION_TOKEN_PATH"] = vim.fn.expand("~/.config")

vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()

-- Your CodeCompanion setup
local plugins = {
  {
    "olimorris/codecompanion.nvim",
    dependencies = {
      { "nvim-treesitter/nvim-treesitter", build = ":TSUpdate" },
      { "nvim-lua/plenary.nvim" },
      -- Test with blink.cmp
      {
        "saghen/blink.cmp",
        lazy = false,
        version = "*",
        opts = {
          keymap = {
            preset = "enter",
            ["<S-Tab>"] = { "select_prev", "fallback" },
            ["<Tab>"] = { "select_next", "fallback" },
          },
          sources = {
            completion = {
              enabled_providers = { "lsp", "path", "buffer", "codecompanion" },
            },
            providers = {
              codecompanion = {
                name = "CodeCompanion",
                module = "codecompanion.providers.completion.blink",
                enabled = true,
              },
            },
          },
        },
      },
      -- Test with nvim-cmp
      -- { "hrsh7th/nvim-cmp" },
    },
    opts = {
      --Refer to: https://github.com/olimorris/codecompanion.nvim/blob/main/lua/codecompanion/config.lua
      strategies = {
        --NOTE: Change the adapter as required
        chat = { adapter = "copilot" },
        inline = { adapter = "copilot" },
      },
      opts = {
        log_level = "DEBUG",
      },
    },
  },
}

require("lazy.minit").repro({ spec = plugins })

-- Setup Tree-sitter
local ts_status, treesitter = pcall(require, "nvim-treesitter.configs")
if ts_status then
  treesitter.setup({
    ensure_installed = { "lua", "markdown", "markdown_inline", "yaml" },
    highlight = { enable = true },
  })
end

-- Setup nvim-cmp
-- local cmp_status, cmp = pcall(require, "cmp")
-- if cmp_status then
--   cmp.setup({
--     mapping = cmp.mapping.preset.insert({
--       ["<C-b>"] = cmp.mapping.scroll_docs(-4),
--       ["<C-f>"] = cmp.mapping.scroll_docs(4),
--       ["<C-Space>"] = cmp.mapping.complete(),
--       ["<C-e>"] = cmp.mapping.abort(),
--       ["<CR>"] = cmp.mapping.confirm({ select = true }),
--       -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
--     }),
--   })
-- end

Error messages

Error executing vim.schedule lua callback: ...panion.nvim/lua/codecompanion/providers/diff/default.lua:68: E474: Invalid argument
stack traceback:
        [C]: in function 'nvim_set_option_value'
        ...panion.nvim/lua/codecompanion/providers/diff/default.lua:68: in function 'new'
        ...decompanion.nvim/lua/codecompanion/strategies/inline.lua:550: in function 'start_diff'
        ...decompanion.nvim/lua/codecompanion/strategies/inline.lua:321: in function 'done'
        .../nvim/lazy/codecompanion.nvim/lua/codecompanion/http.lua:109: in function <.../nvim/lazy/codecompanion.nvim/lua/codecompanion/http.lua:97>
Press ENTER or type command to continue

Log output

[DEBUG] 2024-12-13 20:17:14
Inline instance created with ID 7942063
[DEBUG] 2024-12-13 20:17:14
Prompt to classify: { {
    content = "<question>write hello world</question>",
    role = "user"
  } }
[INFO] 2024-12-13 20:17:14
Inline classification request started
[DEBUG] 2024-12-13 20:17:14
Authorizing GitHub Copilot token
[DEBUG] 2024-12-13 20:17:14
Reusing GitHub Copilot token
[INFO] 2024-12-13 20:17:14
Request body file: /tmp/nvim.root/WU3dx8/0.json
[DEBUG] 2024-12-13 20:17:14
Request:
{ "-sSL", "-D", "/tmp/plenary_curl_69104fb2.headers", "--compressed", "-X", "POST", "-H", "Content-Type: application/json", "-H", "Copilot-Integration-Id: vscode-chat", "-H", "Editor-Version: Neovim/0.11.0", "-d", "@/tmp/nvim.root/WU3dx8/0.json", "--no-buffer", "--silent", "https://api.githubcopilot.com/chat/completions" }
[INFO] 2024-12-13 20:17:15
Placement: "<add>"
[DEBUG] 2024-12-13 20:17:15
Determined position for output: {
  bufnr = 1,
  col = 0,
  line = 2
}
[INFO] 2024-12-13 20:17:15
Inline request started

Health check output

==============================================================================
codecompanion:                         require("codecompanion.health").check()

- Neovim version: 0.11.0
- Log file: /root/.repro//state/nvim/codecompanion.log

Plugins: ~
- OK plenary.nvim installed
- OK nvim-treesitter installed

Tree-sitter parsers: ~
- OK markdown parser installed
- OK yaml parser installed

Libraries: ~
- OK curl installed

Describe the bug

In C++ buffer, :CodeCompanion inline strategy failed.

I think it's because it try to use context filetype to set diff buffer's filetype. But the C++ context filetype is "C++", not "cpp". This cause vim.api.nvim_set_option_value() failed.

Reproduce the bug

1. nvim --clean -u minimal.lua.
2. :edit hello.cpp.
3. :CodeCompanion write hello world

Final checks

• I have made sure this issue exists in the latest version of the plugin
• I have tested with the minimal.lua file from above and have shared this
• I have shared the contents of the log file

[olimorris]

Thanks for raising this! Fixed in the latest release.

[mars90226]

Thank you for the quick fix!