Adding folded headers in Exim 4.

[Adam Funk <a24061@yahoo.com>]

I want to add a folded, multi-line header (RFC2822, Sec.2.2.3) like
this:

X-Comment: foo foo foo
   bar bar bar

using the headers_add option.  I've experimented with it a little and I
think this works:

   headers_add = X-Comment: foo foo foo\n   bar bar bar

and even this:

   headers_add = X-Comment: foo foo foo\n   bar \
                            bar bar bar\n  foobar \
                            foobar

for improved readability of very long comments.  But before I leave it
in my config file, I'd like to know if anyone else has tried these,
successfully or not.

Thanks,
Adam