#!/usr/bin/env bash
set -o errexit
set -o nounset

search_string_file=${1:?'Missing argument: "search_string_file".'}

lines=()
if ! mapfile -t lines < "${search_string_file}"; then
    exit 1
fi

declare -A search
for line in "${lines[@]}"; do
    printf "Line: %s\n" "${line}"

    split=()
    if ! readarray -d $'\t' split <<< "${line}"; then
        printf "No tab delimited entry, mapfile failed.\n" >&2
        continue
    fi

    search["${split[0]}"]="${split[1]%$'\n'}"
done

idx=0
for search_name in "${!search[@]}";  do
    search_string="${search[${search_name}]}"
    printf "[%d] %s--%s\n" "${idx}" "${search_name}" "${search_string}"
    idx=$((idx+1))
done