This example illustrates some conflict between xelatex and natbib- and footnote-generated superscripts. The semi-colon between distinct citations is not typeset as a superscript, nor is the dagger. The asterisk, however, looks fine to me. Any suggestion on how to make these auto-generated superscripts look more normal?
Update Mostly fixed, see second screenshot below.
Update 2 Fully fixed! Alter the MWE below with this code:
\DefineFNsymbols*{safestar}{{$*$}{\textdagger}{\textdaggerdbl}{\textsection}
{\textparagraph}{\textbardbl}{$**$}{\textdagger\textdagger}
{\textdaggerdbl\textdaggerdbl}{\textsection\textsection}
{\textparagraph\textparagraph}{\textbardbl\textbardbl}}
\setfnsymbol{safestar}
This comes c/o Achim Blumensath on the MinionPro mailing list, together with docs for the footmisc package.
\documentclass[article, a4paper, 12pt, oneside]{memoir}
\usepackage{fontspec}
\usepackage{xunicode}
\usepackage{xltxtra} % c/o @wasteofspace, this is the "offending" line
\defaultfontfeatures{Mapping=tex-text}
\setmainfont{Linux Libertine O}
\usepackage[super]{natbib}
\usepackage[perpage,symbol]{footmisc}
\let\sc\scshape
\let\bf\bfseries
\let\it\itfamily
\setlrmarginsandblock{23mm}{23mm}{*}
\setulmarginsandblock{23mm}{198mm}{*}
\checkandfixthelayout
\begin{document}
\bibliographystyle{plainnat}
\setcitestyle{nature}
\thispagestyle{empty}
This is a nice\footnote{(That is to say, minimal.)}
example.\cite{lenat1976artificial,lenat1984and} Unfortunately, it has
some problems.\footnote{From an aesthetic point of view.}
\bibliography{corneli}{}
\end{document}
Semicolon http://metameso.org/~joe/superscripts.png
But if we don't load xltxtra, then we get this other slightly problematic result: Asterisk http://metameso.org/~joe/superscript2.png
I guess I can live with the small and over-elevated asterisk. It looks less bad when it follows a period.