iedit does not register variables in bash/sh mode

I have the following script, do not mind what is going on, but when I try to iedit-mode on the section variable only the declarations are found and the expansion on line 29. I would expect the last one to get caught as variable expansions are normally registered by iedit.

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

lines=$(grep -P "^\w+.*=" config.ini)
section=""

declare -A config

# echo "found variables and values"
# for line in $lines; do

#     value=$(echo "$line" | awk -F '=' '{print $2}')
#     config[$index]="$value"
#     # echo "$index: $value"
# done

while read -r line; do
    if [[ "$line" =~ ^\[.*\]$ ]]
    then
    section=$(echo "$line" | tr --delete '\[\]')
    elif [[ "$line" =~ ^# ]]
    then
    continue
    echo "COMMENT: $line"
    else
    index=$(echo "$line" | awk -F '=' '{print $1}')
    value=$(echo "$line" | awk -F '=' '{print $2}')
    config[$section/$index]="$value"
    fi
done < config.ini

using emacs 27.2, iedit 20210203.23 from melpa

victorhge / iedit

iedit does not register variables in bash/sh mode #134