/etc/hosts not correctly formed

Commit d9844611834e80395e0f3f9b600d3f3e113272dd seems to break domains - was it intended to loop per new line?

This worked for me:

    DOMAINS='local.wordpress.dev 
         local.wordpress-trunk.dev
         src.wordpress-develop.dev
         build.wordpress-develop.dev'

    if ! grep -q "$DOMAINS" /etc/hosts
    then
        DOMAINS=$(echo $DOMAINS)
        echo "127.0.0.1 $DOMAINS" >> /etc/hosts
    fi