Better `ping` support to allow for mixed domains/hostnames w/ protocals (e.g. `ping 'https://who.is/my/ping/?example=this'`)

ping.sh

# ------------------------------------------
#  Better `ping` support to allow for mixed
#  domains/hostnames with protocols (e.g. 'http://..')
#
#  @1 = host
# -> Example usage:
#    ping http://google.com/
# ------------------------------------------
function ping {
    local pingdomain="$1"
    shopt -s nocasematch # allow for lowercase
    pingdomain=${pingdomain/#*:\/\/} # strip leading protocol
    pingdomain=${pingdomain/#*:*@/} # strip leading user:pass@
    pingdomain=$(echo "${pingdomain//"?"//}") # strip trailing '?' onwards
    pingdomain="$(echo "$pingdomain" | cut -d/ -f 1)" # strip trailing '/' onwards
    if [[ "$#" = "0" ]] && [[ -f $HISTFILE ]]; then
        pingdomain=${$(tail -n 1 $HISTFILE)}
        pingdomain=${pingdomain/#*ping /}
        ping "$(echo $pingdomain)"
    else
        echo "Pinging hostname \"$pingdomain\""
        command ping $pingdomain
    fi
}