{\LaTeX3 and \code{expl3} in 2014: Recent developments}
{Will Robertson and Frank Mittelbach}
{The \code{expl3} programming layer for \LaTeX3 has stabilised and is
now being used by many people ``in the wild'' and for many different
package types.  In this talk we'll discuss the emerging popularity of
\code{expl3} and some thoughts we have for rounding out its feature set.
One area of recent development is case-changing in the Unicode era;
\TeX's \cs{uppercase} and \cs{lowercase} don't fulfil our needs when
case changing is language-dependent and in some cases no longer a
one-to-one mapping.  On the other hand, those primitives are used
extensively for various tricks in \TeX\ programming, and one of
\code{expl3}'s philosophies is to avoid `tricks', so we can try to do
something about that too.}