<A-[hjkl]> instead of <C-W>[hjkl]

[dtomvan]

I am using the Navigator.nvim
plugin. I have the following setup:

return {
    'numToStr/Navigator.nvim',
    config = true,
    keys = {
        { '<A-h>', '<cmd>NavigatorLeft<cr>' },
        { '<A-j>', '<cmd>NavigatorDown<cr>' },
        { '<A-k>', '<cmd>NavigatorUp<cr>' },
        { '<A-l>', '<cmd>NavigatorRight<cr>' },
        { '<A-p>', '<cmd>NavigatorPrevious<cr>' },
    },
}

This works fine, but I want myself to get out of the habit of using
<c-w>[hjkl] and use my new keybindings instead. So, to ease myself into using
the better and easier method I have added a hint:

['<C%-W>[hjkl]'] = {
    message = function(keys)
        return 'Use <A-' .. keys:sub(6) .. '> instead of ' .. keys
    end,
    length = 6,
},

NOTE: as @m4xshen has pointed out, this snippet has it's quirks:

• - is a magic character so you need to escape it. (see Programming in Lua)

• The length is the length of the final matched string, so it should be 6.

• key:sub(7) should be key:sub(6) to get the final character of the string.