truncated_pwd () {
  local pwdmaxlen=45
  local trunc_symbol="…"
  local dir=${PWD##*/}
  pwdmaxlen=$(( ( pwdmaxlen < ${#dir} ) ? ${#dir} : pwdmaxlen ))
  NEW_PWD=${PWD/#$HOME/\~}
  local pwdoffset=$(( ${#NEW_PWD} - pwdmaxlen ))
  if [ ${pwdoffset} -gt "0" ]
  then
    NEW_PWD=${NEW_PWD:$pwdoffset:$pwdmaxlen}
    NEW_PWD=${trunc_symbol}/${NEW_PWD#*/}
  fi
  echo $NEW_PWD
}