(Sorry for the cross-posting, but this seems of very minor possible interest to a few different people.)
Hi Jonathan, I've just noticed that catcodes of superscript i and n have catcode 11, as do the latin & greek subscripts. (Code points appended.) I'm going to change this in unicode-math (so they're all cc12), but do you think this is something that should be changed in the ini file? (I'll check this with LuaTeX, too.) The reason it's a problem is that users try to write things like $\Cⁿ$ and the expected behaviour, well, isn't. Many thanks, -- Will 2071 {i} 207f {n} 2090 {a} 2091 {e} 1d62 {i} 2092 {o} 1d63 {r} 1d64 {u} 1d65 {v} 2093 {x} 1d66 {\beta} 1d67 {\gamma} 1d68 {\rho} 1d69 {\phi} 1d6a {\chi} -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex