2011/2/21 Will Robertson <[log in to unmask]>:
> I am especially interested in this last part with the e-type argument, especially its relationship to LuaTeX's \expanded primitive (also available in pdfTeX >= 1.5, if it's turning up in TL this year?).

I seriously doubt that we'll see a release of pdfTeX 1.5x anytime soon
(if at all).
But I'm not Thanh.