select prev/next item mapping not working for cmdline case

[robbienohra]

FAQ

• I have checked the FAQ and it didn't resolve my problem.

Issues

• I have checked existing issues and there are no open or closed issues with the same problem.

Neovim Version

0.6.1

Minimal reproducible config

if has('vim_starting')
  set encoding=utf-8
endif
scriptencoding utf-8

if &compatible
  set nocompatible
endif

let s:plug_dir = expand('/tmp/plugged/vim-plug')
if !filereadable(s:plug_dir .. '/plug.vim')
  execute printf('!curl -fLo %s/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim', s:plug_dir)
end

execute 'set runtimepath+=' . s:plug_dir
call plug#begin(s:plug_dir)
Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/vim-vsnip'
Plug 'neovim/nvim-lspconfig'
call plug#end()
PlugInstall | quit

" Setup global configuration. More on configuration below.
lua << EOF
local cmp = require "cmp"
cmp.setup {
  snippet = {
    expand = function(args)
      vim.fn["vsnip#anonymous"](args.body)
    end,
  },

  mapping = {
    ['<CR>'] = cmp.mapping.confirm({ select = true }),
    ['<Left>'] = cmp.mapping.select_prev_item(),
    ['<Right>'] = cmp.mapping.select_next_item(),
  },

  sources = {
    { name = "nvim_lsp" },
    { name = "buffer" },
  },
}
EOF

lua << EOF
local capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())

require'lspconfig'.clangd.setup {
  capabilities = capabilities,
}
EOF

Description

When I try to navigate to next/previous items in code (e.g. a cpp file) then the Left and Right custom mappings work (I can navigate to previous/next items using left/right keys).

However, if I enter command mode : then the left/right keys no longer work to navigate to prev/next items and I still need to use the tab key.

Steps to reproduce

Open a cpp file and type #include — note that left/right arrows navigate to prev/next items.

Enter command mode via : and type in something to prompt auto-complete suggestions. Note that left/right arrows no longer navigate to prev/next items. Note that the tab key works to navigate items.

Expected behavior

Left/right keys work to navigate between items in command mode.

Actual behavior

Left/right keys do not work to navigate between items in command mode.

Additional context

No response

[hrsh7th]

You should change the mapping as following.

  mapping = {
    ['<CR>'] = cmp.mapping.confirm({ select = true }),
    ['<Left>'] = cmp.mapping.select_prev_item(),
    ['<Right>'] = cmp.mapping.select_next_item(),
  },

↓↓↓

  mapping = {
    ['<CR>'] = cmp.mapping.confirm({ select = true }),
    ['<Left>'] = cmp.mapping(cmp.mapping.select_prev_item(), { 'i', 'c' }),
    ['<Right>'] = cmp.mapping(cmp.mapping.select_next_item(), { 'i', 'c' }),
  },

[robbienohra]

Worked like a charm, thanks!

[ginolegigot]

hey!
i tried both
['<S-Up>'] = cmp.mapping.select_prev_item({behavior = 'select'}),
['<S-Down>'] = cmp.mapping.select_next_item({behavior = 'select'}),

and
['<Left>'] = cmp.mapping(cmp.mapping.select_prev_item(), { 'i', 'c' }),
['<Right>'] = cmp.mapping(cmp.mapping.select_next_item(), { 'i', 'c' }),

But the up and down arrow keys seem to be still used to navigate through the autocompletion menu. Any hints ?

[ginolegigot]

Ok nevermind, this way of declaring the keymaps work:

  mapping = {
    ["<S-n>"] = cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Insert },
    ["<S-p>"] = cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Insert },
  },

(thx tj)