local function paste_buf()
  local content = os.getenv("NVIM_CLIPBOARD")

  local line = vim.api.nvim_get_current_line()
  local indent = string.match(line, " +")

  vim.fn.setreg("a", indent .. content)
  vim.cmd("put a")
end

-- Use ';' to insert paste_buf
vim.keymap.set('n', ';', paste_buf)