clean up the underscore mess for the typeset formats so that subscripts

work in math displays (thanks to Bo Peng on the Doc-SIG)

Doc/texinputs/python.sty

@@ -7,6 +7,7 @@
              [1998/01/11 LaTeX package (Python markup)]
 
 \RequirePackage{longtable}
+\RequirePackage{underscore}
 
 % Uncomment these two lines to ignore the paper size and make the page 
 % size more like a typical published manual.
@@ -541,28 +542,6 @@
                                     {\reset@font\normalsize\py@HeaderFamily}}
 
 
-% This gets the underscores closer to the right width; the only change
-% from standard LaTeX is the width specified.
-
-\DeclareTextCommandDefault{\textunderscore}{%
-  \leavevmode \kern.06em\vbox{\hrule\@width.55em}}
-
-% Underscore hack (only act like subscript operator if in math mode)
-%
-% The following is due to Mark Wooding (the old version didn't work with
-% Latex 2e.
-
-\DeclareRobustCommand\hackscore{%
-  \ifmmode_\else\textunderscore\fi%
-}
-\begingroup
-\catcode`\_\active
-\def\next{%
-  \AtBeginDocument{\catcode`\_\active\def_{\hackscore{}}}%
-}
-\expandafter\endgroup\next
-
-
 % Now for a lot of semantically-loaded environments that do a ton of magical
 % things to get the right formatting and index entries for the stuff in
 % Python modules and C API.