disabled trivlist (causes non-descript problems in HOL-Real-HahnBanach);

--- a/lib/texinputs/isabelle.sty	Thu Aug 24 00:53:53 2000 +0200
+++ b/lib/texinputs/isabelle.sty	Thu Aug 24 00:54:54 2000 +0200
@@ -17,10 +17,9 @@
 \newdimen\isa@parindent\newdimen\isa@parskip
 
 \newenvironment{isabelle}{%
-\trivlist\item%
 \isa@parindent\parindent\parindent0pt%
 \isa@parskip\parskip\parskip0pt%
-\isastyle}{\endtrivlist}
+\isastyle}{}
 
 \newcommand{\isa}[1]{\emph{\isastyleminor #1}}