Mapping a "Command" key in Neovim / alacritty

Question

I am failing to map Command+T, Command+[ and Command+] keys in Neovim under macOS / Alacritty.

I've reduced my Alacritty to be minimal:

env: TERM: xterm-256color font: size: 16 key_bindings: - {key: T, mods: Command, chars: "\×80\xfc\x80t"} - {key: LBracket, mods: Command, chars: "\×80\xfc\×80["} - {key: Bracket, mods: Command, chars: "\×80\xfc\×80]"}

And also Neovim's:

vim.kevmap.set('n', '<D-t>', vim.cmd.tabnew) vim.keymap.set('n', '<D-[>', vim.cmd.tabprevious) vim.keymap.set('n', '<D-]>', vim.cmd.tabnext)

I went to nvim,
entered the following command,
```
echo "\<D-t>" 
```
got an output:
```
<80><fc><80>t 
```

used the output to add a binding in Alacritty:

- { key: T, mods: Command, chars: "\x80\xfc\x80t" }

What am I doing wrong?

Please don’t post images of text. Just post code blocks of your config files. — D. Ben Knoble
– D. Ben Knoble, Commented Apr 23, 2023 at 17:40
Does mapping ×80\xfc\x80t work? You can try using <C-v><C-t> to insert that direct sequence, but you can probably also use some escape sequence (I'm not that familiar with Neovim's lua stuff). — Martin Tournoij
– Martin Tournoij, Commented Jun 23, 2023 at 17:11

Dan Rasmuson · Accepted Answer · 2024-04-24 04:15:30Z

What I ended up doing was going to Neovim opening a new file and going into insert mode.

Then typing the key combo I was hoping to bind.

In this case Command + Shift + {. When I did this I was able to see what key Alacritty was sending to Neovim.

<S-D-{>

Then I was able to use this keybinding in my config.

vim.keymap.set("n", "<S-D-{>", "<cmd>bp<CR>", { silent = true }) vim.keymap.set("n", "<S-D-}>", "<cmd>bn<CR>", { silent = true })

I hope that helps!

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