Set Neovim and Using Meta key in VSCode

Set Neovim mode in VSCode

• Install VSCode Extension: VSCode Neovim

Mapping meta key for VSCode and Neovim

• Unification of meta key mapping between VSCode and Neovim
• Send meta key mapping from VSCode to Neovim
• Example of meta key for moving text
  • VSCode Meta Key(<M-h/j/k/l>) --> Neovim Meta Key(<M-h/j/k/l>)

VSCode: keybinding.json(Shift-Cmd-P)

{
    "command": "vscode-neovim.send",
    // the key sequence to activate the binding
    "key": "M+k",
    // don't activate during insert mode
    "when": "editorTextFocus && neovim.mode != insert",
    // the input to send to neovim
    "args": "<M-k>"
},
{
    "command": "vscode-neovim.send",
    // the key sequence to activate the binding
    "key": "M+j",
    // don't activate during insert mode
    "when": "editorTextFocus && neovim.mode != insert",
    // the input to send to neovim
    "args": "<M-j>"
},
..

init.vim

" Normal Mode
nnoremap <M-K> <CMD>m .-2<CR>
nnoremap <M-J> <CMD>m .+1<CR>
nnoremap <M-H> <<
nnoremap <M-L> >>  
" Visual Mode
vnoremap <M-K> :m '<-2<CR>gv
vnoremap <M-J> :m '>+1<CR>gv
vnoremap <M-H> <gv
vnoremap <M-L> >gv 

Terminal emulator for meta key

• To send the meta key, you need to set the meta key in the terminal emulator.
  • Mac: Terminal --> Preference --> Profile --> Key Board --> Enable "Use Option as Meta key"
  • Emulator using xterm.js. ttyd(macOptionIsMeta=true)/hyper(altIsMeta: true) Find and set the corresponding Option