# Example: uncsv -d "\t" file.csv | awk -F "\t" -f flat.awk
# Assumes first line is a header with field names.

NR == 1 {
    for (i = 1; i <= NF; i++) {
        header[i] = $i
        if (length($i) > maxlen) {
            maxlen = length($i)
        }
    }
    maxlen++
}

NR > 1 {
    for (i = 1; i <= NF; i++) {
        printf "%-" maxlen "s %s\n", header[i] ":", $i
    }
    printf "\n"
}