return function()
  local map = vim.api.nvim_set_keymap
  local opts = { noremap = true, silent = true }
  vim.g.mapleader = ' '
  map('n', '<m-n>', '"zdd"zp', opts) -- Move line down
  map('n', '<m-e>', '"zdd"zkP', opts) -- Move line up
  map('i', '<c-t>', '<esc>', opts) -- return to normalcy
  map('n', '<c-d>', ':q<cr>', opts) -- c-d to close file
  map('i', '<tab>', 'coc#pum#visible() ? coc#pum#next(1) : "\\<Tab>"',
      {noremap = true, silent = true, expr = true}) -- next item in coc list
  map('i', '<s-tab>', 'coc#pum#visible() ? coc#pum#prev(1) : "\\<C-h>"',
      {noremap = true, silent = true, expr = true}) -- prev item in coc list
  map('n', '<F2>', '<Plug>(coc-rename)', opts) -- rename
  map('n', '<F8>', '<Cmd>TagbarToggle<cr>', opts) -- show ctags
  vim.keymap.set('n', 'zR', require('ufo').openAllFolds) -- ufo
  vim.keymap.set('n', 'zM', require('ufo').closeAllFolds) -- ufo
  vim.keymap.set('t', '<c-t>', '<c-\\><c-n>') -- close term
  vim.keymap.set('n', '<c-->', function()
      vim.g.neovide_scale_factor = vim.g.neovide_scale_factor * 0.9
  end)
  vim.keymap.set('n', '<c-=>', function()
      vim.g.neovide_scale_factor = vim.g.neovide_scale_factor * 1.1
  end)


  vim.g.tagbar_map_showproto = '<C-Space>' -- remove tagbar space bar conflict


  -- whichkey
  local wk = require('whichkey_setup')
  wk.config{
      hide_statusline = true,
      default_keymap_settings = {
          silent=true,
          noremap=true,
      },
      default_mode='n'
  }

  wk.register_keymap('leader', {
      s = {
          name = '+jump',
          d = {'<Plug>(coc-definition)', 'definition'},
          r = {'<Plug>(coc-references)', 'references'},
          t = {'<Plug>(coc-type-definition)', 'type definition'},
          s = {'<Cmd>BLines<cr>', 'fzf current buffer'},
          S = {'<Cmd>Lines<cr>', 'fzf all buffers'},
      },
      nt = {'<Cmd>NERDTreeToggle<CR>', 'nerdtree'}, -- originally nt
      rc = {'<Cmd>tabedit $MYVIMRC<cr><Cmd>NERDTree ~/.config/nvim/<cr>', 'nvim config'}, -- originally rc
      c = {
          name = '+appearance',
          d = {'<Cmd>set background=dark<cr>', 'dark'},
          l = {'<Cmd>set background=light<cr>', 'light'},
      },
      e = {'<Cmd>CocDiagnostics<cr>', 'errors'},
      h = {'<Cmd>call CocActionAsync("doHover")<cr>', 'hover'},
      q = {
        name = "+modify",
        q = {'<Plug>(coc-fix-current)', 'quick fix'},
        c = {'<Plug>(coc-codeaction-selected)', 'code actions'},
      },
      l = {
          name = '+latex',
          c = {'<Cmd>VimtexCompile<cr>', 'toggle compile'},
      },
      b = {
          name = '+buffer',
          m = {'<c-w>h', 'left'},
          n = {'<c-w>j', 'down'},
          e = {'<c-w>k', 'up'},
          i = {'<c-w>l', 'right'},
          M = {'<c-w>H', 'move left'},
          N = {'<c-w>J', 'move down'},
          E = {'<c-w>K', 'move up'},
          I = {'<c-w>L', 'move right'},

          t = {'<cmd>Telescope buffers<cr>', 'goto fuzzy'},
      },
  })

end