Copilot.lua: TypeError when running Copilot version command

[yongshengzhucn]

Description

When running the command Copilot version in Neovim, an error occurs due to attempting to concatenate a table value with a string using the .. operator.

Error Message

Error executing Lua callback: ...ocal/share/nvim/lazy/copilot.lua/lua/copilot/command.lua:23: ...ocal/share/nvim/lazy/copilot.lua/lua/copilot/command.lua:22: attempt to concatenate upvalue 'lines' (a table value)
stack traceback:
	[builtin#36]: at 0x0100e48fc4
	...ocal/share/nvim/lazy/copilot.lua/lua/copilot/command.lua:23: in function <...ocal/share/nvim/lazy/copilot.lua/lua/copilot/command.lua:8>
	...ng/.local/share/nvim/lazy/copilot.lua/plugin/copilot.lua:41: in function <...ng/.local/share/nvim/lazy/copilot.lua/plugin/copilot.lua:9>

Problematic Code

In command.lua, function M.version():

function M.version()
  local info = u.get_editor_info()
  ---@type string
  local lines = {
    info.editorInfo.name .. " " .. info.editorInfo.version,
    "copilot language server" .. " " .. info.editorPluginInfo.version,
    "copilot.lua" .. " " .. u.get_copilot_lua_version(),
  }
  local client = c.get()
  coroutine.wrap(function()
    local server_info = lsp.get_server_info(client)
    logger.notify(lines .. "\n" .. server_info)  -- This line causes the error
  end)()
end

Root Cause

The variable lines is a table, but the code attempts to concatenate it with a string using the .. operator, which is not valid in Lua. Tables cannot be directly concatenated with strings.

Suggested Fix

Replace the problematic line with:

logger.notify(table.concat(lines, "\n") .. "\n" .. server_info)

This uses table.concat() to properly convert the table to a string before concatenation.

Environment

• Neovim version: v0.11.0
• Operating System: macOS

Additional Information

The error occurs only when trying to display version information with the Copilot version command.

[AntoineGS]

Thanks for the well put together report (LLM? 😂) though the proposed fix does not work. I'll be publishing a fix shortly :)