[texhax] [pdftex] image XObjects in pdfTeX or XeTeX PDF output?

[Karl Berry]

    Though the character protrusion code of pdfTeX is already in XeTeX's
    svn repository, but I doubt that it's actually used by XeTeX.  

I did not actually try it, but Thanh told me that character protrusion
is in fact implemented in the XeTeX that is in TL 2010.  He and Jonathan
worked on getting it merged.