color man command `cman` (16 or 256 colors)

cman.sh

# vim: set ft=sh:

function cman () {
  local e=$'\e['
  local highlight='1:31'
  local underline='4;36'
  local search='1;37;43'
  [[ "${TERM}" == "${TERM/256}" ]] || {
    highlight='1;38;05;166'
    underline='4;38;05;75'
    search='1;48;05;58'
  }
  case "${MANPAGER%% *}" in
    less|'')
      env \
      LESS_TERMCAP_mb="${e}${highlight}m" \
      LESS_TERMCAP_md="${e}${highlight}m" \
      LESS_TERMCAP_me="${e}0m" \
      LESS_TERMCAP_se="${e}0m" \
      LESS_TERMCAP_so="${e}${search}m" \
      LESS_TERMCAP_ue="${e}0m" \
      LESS_TERMCAP_us="${e}${underline}m" \
      MANPAGER="${MANPAGER:-less} -R" \
      LANG=C \
      man "$@" ;;
    lv)
      env \
      LV="${LV} -c -Sh${highlight} -Su${underline} -Ss${search}" \
      man "$@" ;;
    *)
      command man "$@" ;;
  esac
}