--- a/lib/texinputs/isabelle.sty Thu Oct 18 09:21:00 2007 +0200
+++ b/lib/texinputs/isabelle.sty Thu Oct 18 14:30:55 2007 +0200
@@ -25,10 +25,10 @@
\newcommand{\isactrlsup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
\newcommand{\isactrlisub}[1]{\emph{\isascriptstyle${}\sb{#1}$}}
\newcommand{\isactrlisup}[1]{\emph{\isascriptstyle${}\sp{#1}$}}
-\newcommand{\isactrlbsub}{\emph\bgroup\begin{math}{}\sb\bgroup\mbox\bgroup\isastylescript}
-\newcommand{\isactrlesub}{\egroup\egroup\end{math}\egroup}
-\newcommand{\isactrlbsup}{\emph\bgroup\begin{math}{}\sp\bgroup\mbox\bgroup\isastylescript}
-\newcommand{\isactrlesup}{\egroup\egroup\end{math}\egroup}
+\DeclareRobustCommand{\isactrlbsub}{\emph\bgroup\math{}\sb\bgroup\mbox\bgroup\isastylescript}
+\DeclareRobustCommand{\isactrlesub}{\egroup\egroup\endmath\egroup}
+\DeclareRobustCommand{\isactrlbsup}{\emph\bgroup\math{}\sp\bgroup\mbox\bgroup\isastylescript}
+\DeclareRobustCommand{\isactrlesup}{\egroup\egroup\endmath\egroup}
\newcommand{\isactrlbold}[1]{{\bfseries\upshape\boldmath#1}}
\newcommand{\isactrlloc}[1]{{\bfseries\upshape\boldmath#1}}
\newenvironment{isaantiq}{{\isacharat\isacharbraceleft}}{{\isacharbraceright}}