bind-utils host on cygwin not piping stdout correctly fix

hosts.fix.sh

# temporary fix for Cygwin 1.7.32 - 1.7.33+ and bind-utils
# rolls windows builtin nslookup into bash function
# outputs exactly how bind-utils output so that host calls in other places don't break
# source this file, roll your own, or insert into existing shell scripts
# quick and dirty, but effective, untested on zsh and ash
# Jon Retting @ 10/26/2014

#TEMP host.exe fix for output

# check to make sure ip is valid
__isip () {
    printf "$1" | grep -Eq '^[1-9]{1}[0-9]{0,2}\.[1-9]{1}[0-9]{0,2}\.[1-9]{1}[0-9]{0,2}\.[1-9]{1}[0-9]{0,2}' || return 1
    for i in $(printf "$1" | sed 's/\./\ /g'); do
        [ "$i" -ge 255 ] && return 1
    done
    return 0
}
host () {
    # determine if passed host is alphanumeric else verify ip address
    printf "$1" | grep -Eq '[[:alnum:]]' && { local alpha=true; } || {
        __isip "$1" || { echo "IP not valid"; return 1; }
        local alpha=false
    }
    
    # get windows nslookup output
    local out="$(/cygdrive/c/Windows/SYSTEM32/nslookup "$1" 2>&1)"
    if $alpha; then
        # if is alphamumeric and dns does not exist
        if printf "$out" | grep -q 'Non-existent'; then
            # output to match bind-utils hosts
            printf "%sHost $1 not found: 3(NXDOMAIN)\n"; return 1
        else
            # if is alphanumeric and dns exists
            local host="$(printf "$out" | awk '/Name/ {print $2}')"  #grab the host name
            local ip="$(printf "$out" | awk '/Address/ {print $2}' | sed 1d)"   #grab the ip address
            printf "%s$host has address $ip\n"   #output to match bind-utils hosts
            return 0
        fi
    else
        # if is ip address and dns does not exist
        if printf "$out" | grep -q 'Non-existent'; then
            # output to match bind-utils hosts
            printf "%sHost $(printf $1 | rev).in-addr.arpa. not found: 3(NXDOMAIN)\n"
            return 1
        else
            # if is ipaddress and dns exists
            local host="$(printf "$out" | awk '/Name/ {print $2}')."   #grab the host name
            local ip="$(printf "$out" | awk '/Address/ {print $2}' | sed 1d | rev)."    #grab the ip address
            printf "%s$ip in-addr.arpa domain name pointer $host\n"    #output to match bind-utils hosts
            return 0
        fi
    fi
}