if [ -f /var/cache/man/index.db ] ; then
    if [ -f /var/cache/man/.index-synchronously ] || [ "$1" = "background" ] ; then
        printf "  ManDB index update starting...\n"
        tf=$(/usr/bin/mktemp -p /var/log mandb-index-XXXXXXXX.log)
        exec 3> $tf
        /usr/bin/mv --backup=simple $tf /var/log/mandb-index.log
        printf "ManDB update started: $(/usr/bin/date -Iseconds)\n" >&3
        /usr/bin/mandb <&- >&3 2>&1
        printf "ManDB update finished: $(/usr/bin/date -Iseconds)\n" >&3
        exec  3>&-
        printf "  ... ManDB index update complete.\n"
    else
        printf "  ManDB index update commencing in background...\n"
        env -i ProgramData=$(hexdump -n 32 -e '/8 "%02X" 3/8 "/%02X"' /dev/urandom) \
          /usr/bin/cygstart --hide /usr/bin/dash $0 background
    fi
else
    printf "  ManDB index not available.\n"
fi