Copy Url in Clipboard in Elinks

I finally figured out how to copy a URL in the X11 clipboard with Elinks (a great text-based Web browser) using a key stroke. Woohoo!

enable_systems_functions ()

-- Set X selection
function to_xsel(url)
  execute("echo -n \""..url.."\" | xsel -i")
end

bind_key ('main', 'p', function () to_xsel(current_url()) end)
bind_key ('main', 'P', function () to_xsel(current_link()) end)

For some reason, I am force to call function () to_xsel(...) end instead of to_xsel() itself in the binding as otherwise it doesn't work. I didn't understand why, but whatever.