__prompt_statusline_tput()
 (
   [ "$(command -v tput)" ] || return 0
   if echo "$TERM" | grep -q '^xterm\(-\|$\)'
   then
     export TERM='xterm+sl'
   fi
   tput "$@"
 )
 
 __prompt_statusline_tsl="$(__prompt_statusline_tput tsl)"
 __prompt_statusline_fsl="$(__prompt_statusline_tput fsl)"
 
 __prompt_statusline()
 {
   [ "$__prompt_statusline_tsl" ] || return 0
   printf "$1" "${__prompt_statusline_tsl}${2}${__prompt_statusline_fsl}"
 }