mpv: How to bind Delete to recycle the current file on Windows

custom.lua

-- This file should be placed in a 'scripts' folder within the mpv config directory.
-- See https://mpv.io/manual/stable/#files-on-windows

mp.register_script_message('delete-file', function()
    local path = mp.get_property('path')
    local pos = mp.get_property_number('playlist-pos', 0)
    local count = mp.get_property_number('playlist-count', 0)

    -- This uses the recycle.exe program from wsl-tools (the exe's work outside WSL, too):
    -- https://github.com/maxkagamine/wsl-tools/releases
    local r = mp.command_native({
        name = 'subprocess',
        playback_only = false,
        capture_stdout = true,
        capture_stderr = true,
        args = { 'recycle', '-v', path },
    })

    if r.status == 0 then
        mp.commandv('show-text', r.stdout, 2500)
    else
        mp.commandv('show-text', r.stderr, 5000)
        return
    end

    if pos + 1 < count then
        mp.command('playlist-next')
        mp.set_property_bool('pause', false)
    else
        mp.command('playlist-prev')
        mp.set_property_bool('pause', false)
    end

    mp.commandv('playlist-remove', pos)
end)

input.conf

# This file should be at the root of the mpv config directory.
# The "#menu" comment is for use with https://github.com/tsl0922/mpv-menu-plugin

Del    script-message-to custom delete-file    #menu: File > Delete