Support for using c-h/j/k/l to move in and out of defx split

Problems summary

I’ve got <c-h>, <c-j>, <c-k>, <c-l> mapped to move between splits instead of having to type <c-w> + h/j/k/l I’ve also got vim-tmux-navigator that allows seamless movement using those same mappings between vim and tmux splits.

I’ve only recently started looking at NERDTree alternatively. I’d like to give defx a try, but I’m seeing an issue with these set of mappings. With NERDTree these mappings were working fine and I could move between NERDTree, other vim splits and tmux splits seamlessly.

Expected

Use <c-h>, <c-j>, <c-k>, <c-l> to move between defx and vim splits

Environment Information

• plugin version(SHA1):

  • silent! let g:plugs[‘defx.nvim’].commit = ‘d4bf081bc6bdf062097fddbbcf9c8fdf5b8fb101’
  • silent! let g:plugs[‘vim-tmux-navigator’].commit = ‘0cabb1ef01af0986b7bf6fb7acf631debdbbb470’

• OS: Linux

• neovim/Vim version: NVIM v0.5.0

• :checkhealth or :CheckHealth result(neovim only):

health#defx#check
========================================================================
## defx.nvim
  - OK: has("python3") was successful
  - OK: Python 3.6.1+ was successful

health#nvim#check
========================================================================
## Configuration
  - OK: no issues found

## Performance
  - OK: Build type: Release

## Remote Plugins
  - OK: Up to date

## terminal
  - INFO: key_backspace (kbs) terminfo entry: key_backspace=^H
  - INFO: key_dc (kdch1) terminfo entry: key_dc=\E[3~
  - INFO: $VTE_VERSION='6402'
  - INFO: $COLORTERM='truecolor'

health#provider#check
========================================================================
## Clipboard (optional)
  - OK: Clipboard tool found: wl-copy

## Python 2 provider (optional)
  - INFO: pyenv: Path: /home/francium/.pyenv/libexec/pyenv
  - INFO: pyenv: Root: /home/francium/.pyenv
  - WARNING: No Python executable found that can `import neovim`. Using the first available executable for diagnostics.
  - ERROR: Python provider error:
    - ADVICE:
      - provider/pythonx: Could not load Python 2:
          /usr/bin/python2 does not have the "neovim" module. :help |provider-python|
          /usr/bin/python2.7 does not have the "neovim" module. :help |provider-python|
          python2.6 not found in search path or not executable.
          /home/francium/.pyenv/shims/python is Python 3.9 and cannot provide Python 2.
  - INFO: Executable: Not found

## Python 3 provider (optional)
  - INFO: pyenv: Path: /home/francium/.pyenv/libexec/pyenv
  - INFO: pyenv: Root: /home/francium/.pyenv
  - INFO: `g:python3_host_prog` is not set.  Searching for python3 in the environment.
  - WARNING: pyenv is not set up optimally.
    - ADVICE:
      - Create a virtualenv specifically for Nvim using pyenv, and set `g:python3_host_prog`.  This will avoid the need to install the pynvim module in each version/virtualenv.
  - INFO: Executable: /usr/bin/python3
  - INFO: Python version: 3.9.6
  - INFO: pynvim version: 0.4.3
  - OK: Latest pynvim is installed.

## Python virtualenv
  - OK: no $VIRTUAL_ENV

## Ruby provider (optional)
  - WARNING: `ruby` and `gem` must be in $PATH.
    - ADVICE:
      - Install Ruby and verify that `ruby` and `gem` commands work.

## Node.js provider (optional)
  - WARNING: `node` and `npm` (or `yarn`) must be in $PATH.
    - ADVICE:
      - Install Node.js and verify that `node` and `npm` (or `yarn`) commands work.

## Perl provider (optional)
  - ERROR: perl provider error:
    - ADVICE:
      - "Neovim::Ext" cpan module is not installed

health#treesitter#check
========================================================================
## Checking treesitter configuration
  - INFO: Runtime ABI version : 13

Provide a minimal init.vim/vimrc with less than 50 lines (Required!)

" Disabled because Tmux Vim Navigator mappings are used to handle movement
" nmap <C-J> <C-W><C-J>
" nmap <C-K> <C-W><C-K>
" nmap <C-L> <C-W><C-L>
" nmap <C-H> <C-W><C-H>

call plug#begin()

Plug 'https://github.com/christoomey/vim-tmux-navigator'

if has('nvim')
    Plug 'Shougo/defx.nvim', { 'do': ':UpdateRemotePlugins' }
else
    Plug 'Shougo/defx.nvim'
    Plug 'roxma/nvim-yarp'
    Plug 'roxma/vim-hug-neovim-rpc'
endif

call plug#end()

" TMUX NAVIGATOR """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:tmux_navigator_no_mappings = 1
nnoremap <silent> <C-H> :TmuxNavigateLeft<cr>
nnoremap <silent> <C-J> :TmuxNavigateDown<cr>
nnoremap <silent> <C-K> :TmuxNavigateUp<cr>
nnoremap <silent> <C-L> :TmuxNavigateRight<cr>
nnoremap <silent> <C-/> :TmuxNavigatePrevious<cr>

" DEFX """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
nnoremap <leader><tab> <cmd>Defx<cr>

call defx#custom#option('_', {
    \ 'winwidth': 30,
    \ 'split': 'vertical',
    \ 'direction': 'topleft',
    \ 'show_ignored_files': 0,
    \ 'buffer_name': 'defxplorer',
    \ 'toggle': 1,
    \ 'resume': 1
    \ })

autocmd FileType defx call s:defx_my_settings()
function! s:defx_my_settings() abort
    " Define mappings
    " ......... These are same as the ones in the doc example .........
endfunction

The reproduce ways from neovim/Vim starting (Required!)

1. :sp to create a new split
2. Use <c-j>, <c-k> to move between them
3. <leader><tab> to open defx
4. Use <c-h> to move to into defx split
5. Note you now can’t use <c-l> to move out of defx

[francium]

Just tested your config. You’re correct, it does work. So something I’ve done is incorrect. I’ll narrow down the issue myself. Thank you for your help!

[Shougo]

set runtimepath+=~/work/defx.nvim
set runtimepath+=~/work/nvim-yarp/
set runtimepath+=~/work/vim-hug-neovim-rpc/

augroup vimrc_defx
  autocmd!
  autocmd VimEnter * call Setup_Defx()
augroup END

function! Setup_Defx() abort
  call defx#custom#option('_', {
        \ 'winwidth': 30,
        \ 'split': 'vertical',
        \ 'direction': 'topleft',
        \ 'show_ignored_files': 0,
        \ 'buffer_name': 'defxplorer',
        \ 'columns': 'indent:filename',
        \ })
endfunction

nmap <C-J> <C-W><C-J>
nmap <C-K> <C-W><C-K>
nmap <C-L> <C-W><C-L>
nmap <C-H> <C-W><C-H>

It works for me.