set -euo pipefail
export LC_ALL=C
sed_work=$(mktemp -d "${TMPDIR:-/tmp}/sed-example.XXXXXX")
trap 'rm -rf -- "$sed_work"' EXIT
cd "$sed_work"
mkdir -p data
cat > data/values.txt <<'SED_INPUT_1'
name=alice
name=bob
port=8080
SED_INPUT_1

sed -n 's/^name=.*/A\&B/p' data/values.txt