And a slightly more complicated example:

\cite[some text here
where spaces are not optional]{citekey1,citekey2}

Exports as \cite[some text here where spaces are not optional]\{citekey1,citekey2\}

   -k.


On Sun, Jan 12, 2014 at 6:21 PM, Ken Mankoff <mankoff@gmail.com> wrote:
If I have some text and then \cite{a, b
  c, d, e}, these citations do not export properly
to LaTeX, due to the newline in the \cite{}.

The command is escaped and appears as \cite\{a, b, c, d, e\}.

   -k.