[jQuery] [autocomplete] Using a \n (new line) as the multipleSeparator in Internet Explorer does not work

[Gabe]

I've been getting some buggy behavior with IE7 when using a new line
character as the multipleSeparator.  Here is my sample code:

<textarea name="search[movies]" rows="4" cols="20"
id="search_movies"></textarea>
$('#search_movies').autocomplete(
        'ajax_movie_autocomplete', {
                mustMatch: true,
                multiple: true,
                multipleSeparator: "\n"
        });

Firefox and Safari work great.  In IE, the first entry works fine, but
the cursor stays on the same line.  When you hit a character for your
second entry, the cursor drops down a line and starts displaying the
auto-complete options for your new text appropriately.  However, if
you hit "enter", it fails to autocomplete at all and just drops down
to a new line.  If you instead select the option with your mouse
instead of hitting "enter", it changes the first line instead of the
line you're actually on.

I receive the same behavior if I set multipleSeparator: "\r\n" .

Also, "\r\n" is completely broken Firefox and Safari.  The first entry
works fine, but the second entry completely wipes out everything typed
into the textarea so far.  If anyone has a solution for IE, I'd love
it worked on the "\n" form, as I'd rather not browser sniff to
determine the separator.