lsp formatting

[Astrantia]

hello, a pretty basic feature request actually. is it possible to add an LSP formatter? some language servers implement formatting, and when I'm writing code using those lsp's, i always prefer formatting with the lsp.using the following command :lua vim.lsp.buf.formatting()

all languages are handled through that one command, so would it be possible to add an option for adding lsp formatting as the default?

[festeh]

I needed to use LSP formatter for Lua and neoformat for Python and wrote a wrapper around neoformat. It checks global variable neoformat_enabled_* for the current buffer and calls neoformat if it exists. Of course, one can set up additional logic.

Here's my neoformat config

vim.g.neoformat_enabled_python = { 'yapf' }

local ext_to_lang = {
  py = "python",
  lua = "lua",
  rs = "rust",
}

local function format()
  local buf = vim.api.nvim_get_current_buf()
  local name = vim.api.nvim_buf_get_name(buf)
  local ext = name:match("%.(%w+)$")
  local lang = ext_to_lang[ext]
  if lang then
    local key = "neoformat_enabled_" .. lang
    if vim.g[key] then
      vim.cmd("Neoformat")
      return
    end
  end
  vim.lsp.buf.format()
end

vim.keymap.set('n', '<leader>m', format, { desc = "Format buf with Neoformat or ls" })