The mvim script (included with MacVim) is useful for launching the MacVim app from the shell. Sure, you can run Neovim from the shell with nvim. but I want it to launch my instance of Neovim running in Alacritty.

This requires running nvim with --listen as described in the linked post above.

I use fish shell so I have defined this in ~/.config/fish/functions/

function v
    if count $argv > /dev/null
        set -l filename $argv[1]
        # Expand the filename to its absolute path
        set -l absolute_path (realpath $filename)
        #echo "Arguments provided: $argv"
        #echo "Absolute path: $absolute_path"
        nvim --server ~/nvim-server.pipe --remote-send "<ESC>:tabe $absolute_path<CR>"`
        open -a Alacritty
        set tempfile (mktemp)
        #echo "file: $tempfile"
        ansifilter > $tempfile
        nvim --server ~/nvim-server.pipe --remote-send "<ESC>:tabe $tempfile<CR>"`
        open -a Alacritty

v accepts 2 types of input:

Filename as an arg

It lets me open a file in Neovim:

v some-file-name-to-open

STDIN automatically written to a temporary file and opening that file

Pipe some contents to Neovim:

cat some-file-with-contents | v

Pipe some contents to Neovim again:

echo "hello world" | v

Piping is useful because I can do:

$ curl | json_pp | v

and get the output:

   "message" : "",
   "status" : "success"

This would be similar to piping it to nvim -, but again, using the v script handles STDIN automatically (so you don’t need -) and it writes the contents to a temporary file and open it in my preferred Neovim instance.