Escape newlines in "body" not work as intended

[KorewaLidesu]

I don't know how to describe it so... Action file

[stm2]

Hi, here is what I did. Might be a bit clunky but works for me:

value=$(cat body.txt)
value="${value//'%'/'%25'}"
value="${value//$'\n'/'%0A'}"
value="${value//$'\r'/'%0D'}"
echo "::set-output name=BODY::$value"