multi line text in the margins

[cage]

Hi!

I am exploring the margin feature of Emacs. I tried to write some text
with a line break character inside, adding a text property like that:

(list :display (list '(margin margin-right) "foo\nbar"))


But the line break character is printed as "^J" instead to be interpreted.

Now i wonder if there is a way to split text in lines on the margin.

Any idea?

Thanks in advance!
C.