Handy Lua function to diff current line and the next

diffLineWithNext.lua

--Modified from https://stackoverflow.com/a/5519588
function diffLineWithNext()
    local f1 = vim.fn.tempname()
    local f2 = vim.fn.tempname()

    vim.api.nvim_command(".w " .. f1)
    vim.api.nvim_command("+1 w " .. f2)

    vim.api.nvim_command("tabedit " .. f1)
    vim.api.nvim_command("hor diffsplit " .. f2)
    vim.api.nvim_command("set wrap")
    vim.api.nvim_command("wincmd w")
    vim.api.nvim_command("set wrap")
end