Non-latin detection in conky variables

conkyrc

out_to_x no
out_to_console yes

TEXT
${if_match "${eval $${exec ./script.sh '${time %A}'}}" == "latin"}boring${else}exciting!${endif}

unidetect.sh

#!/bin/bash

latin=$(echo -n "${1}" | od -w1000 -t x1 | awk '
    {
        for (i = 2; i <= NF; i++) {
            n = "0x" $i
            if (strtonum(n) > 0x7F) {
                print "n";
                exit;
            }
        }
    }')

if test -z "$latin"; then
    echo -n 'latin'
else
    echo -n 'nonlatin'
fi