[texhax] mathpazo font question: how to fix "\sl" when using package[sc]{mathpazo}

[David J.C. MacKay]

Dear texhax,

I tried using
\usepackage[sc]{mathpazo}      (which invokes the pplx font family)
instead of
\usepackage{mathpazo}          (which invokes ppl font)
and I found that it sets the text better, with nicer spacing. Nice!

However, the downside of using pplx is that it doesn't provide any "sl"
fonts, so {\sl slant} comes out identical to {\em em}.
(Example latex file appended below.)

Please could a latex2e wizard advise me 
what magic one-liner to add to my document style
so that when I say "{\sl ...}", the ppl font's "sl" is used?
Replies direct to mackay at mrao.cam.ac.uk much appreciated.  

Thanks very much,
 
David MacKay


\documentclass[12pt]{book}
%                 demonstrates the 'no sl' behaviour of [sc] option of mathpazo
\usepackage[sc]{mathpazo}
%\usepackage{mathpazo}
\begin{document}
{\normalsize\em some writing with normalsize em (not sl)}\par
{\normalsize\sl some writing with normalsize sl (not em)}\par
{\large\em some writing with large em (not sl)}\par
{\large\sl some writing with large sl (not em)}\par
\end{document}

 
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David J.C. MacKay                                 mackay at mrao.cam.ac.uk
                             http://www.inference.phy.cam.ac.uk/mackay/
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