how to make scripText in xml human readable - ios

Question

use case:
adding a pre-action is readable through xcode,
but gibberish in xml
question:
is there a way to make scriptText human readable on xml?
example:
code from Pre-actions
function decode() { echo "${*}" | base64 --decode; }
KEY="FLAVOR"
FILE=${SRCROOT}/Flutter/DartDefineFlavor.xcconfig
test -f $FILE || touch $FILE
IFS=',' read -r -a ENCODED_ITEMS <<< "$DART_DEFINES"
for ENCODED_ITEM in ${ENCODED_ITEMS[#]}
do
DECODED_ITEM=$(decode "$ENCODED_ITEM")
IFS=' ' read -r K V <<< ${DECODED_ITEM//[=]/ };
if [ $K = $KEY ]; then
echo "DART_DEFINE_BUNDLE_SUFFIX=.$V" >> $FILE
break
fi
done
expectation:
<ActionContent
title = "Load Dart Define"
scriptText =
"
function decode() { echo "${*}" | base64 --decode; }
KEY="FLAVOR"
FILE=${SRCROOT}/Flutter/DartDefineFlavor.xcconfig
test -f $FILE || touch $FILE
IFS=',' read -r -a ENCODED_ITEMS <<< "$DART_DEFINES"
for ENCODED_ITEM in ${ENCODED_ITEMS[#]}
do
DECODED_ITEM=$(decode "$ENCODED_ITEM")
IFS=' ' read -r K V <<< ${DECODED_ITEM//[=]/ };
if [ $K = $KEY ]; then
echo "DART_DEFINE_BUNDLE_SUFFIX=.$V" >> $FILE
break
fi
done
">
<EnvironmentBuildable>
reality:
<ActionContent
title = "Load Dart Define"
scriptText = "#!/bin/bash
function decode() { echo "${*}" | base64 --decode; }
KEY=FLAVOR
FILE=${SRCROOT}/Flutter/DartDefineFlavor.xcconfig
test -f $FILE || touch $FILE
IFS=&apos;,&apos; read -r -a ENCODED_ITEMS <<< "$DART_DEFINES"
for ENCODED_ITEM in ${ENCODED_ITEMS[#]}
do
DECODED_ITEM=$(decode "$ENCODED_ITEM")
IFS=&apos;=&apos; read -r K V <<< $DECODED_ITEM;
if [ $K = $KEY ]; then
NAME_SUFFIX="DART_DEFINE_NAME_SUFFIX= $V"
BUNDLE_SUFFIX="DART_DEFINE_BUNDLE_SUFFIX=.$V"
echo $NAME_SUFFIX >> $FILE
echo $BUNDLE_SUFFIX >> $FILE
break
fi
done
">
<EnvironmentBuildable>