Just as 'l's displays the presence of access lists by putting a '+' after the normal mode-bits, perhaps it could put a '^' after mode-bits to indicate capabilities are set.
I'm aware that if I'm on a color terminal I can get an indication of this, but color is often off (run through pipes, or not on color term, or by default). for SUID/GUID one gets an indicator of s/S in the modebits, so thought '^' might be reasonable to indicate cap-elevation bits?
