[XeTeX] misplaced diacritical marks

[David J. Perry]

Add to my previous reply (sorry, forgot):

Your keystrokes

\d{\={a}}
\={\d{a}}

also work correctly in my little sample file.  I was concerned first to make 
sure that Junicode would handle the accents correctly (I thought it would) 
so I typed in the characters the fastest way for me.  But most people 
probably would enter them as you did.  And both ways work if you load 
xunicode (and fontspec, of course).

David