Editing Arabic TEI

Dear TEI-L,

I don't work with Arabic texts myself, but some of my students and
colleagues do, and one has just asked me to recommend an XML editor. I use
Oxygen for all of my own work, and I've watched the video that SyncroSoft
produced about editing Arabic in the Oxygen Author view, but before I
point my colleague in that and only that direction, I wanted to ask what
others have used to edit Arabic TEI documents. When I've poked at Arabic
in Oxygen before (older versions, though, so the following may no longer
be the case), the Text view sometimes stranded angle brackets in the wrong
place. The Author view obviously (no angle brackets) didn't do that, but
it broke onto new lines in places that made sense from an engineering
perspective, but that made the continuous text harder to read. All in all,
it was usable, but should my colleague also be considering alternatives?

Thanks,

David