[tex4ht] exerquiz problems

[Michal Hoftich]

Dear Tomáš,

I've identified another issue with exerquiz, here is the updated
exerquiz.4ht file:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% exerquiz.4ht                          2019-09-14-15:17 %
% Copyright (C) 1999-2009       Eitan M. Gurari         %
% Copyright 2009-2019 TeX Users Group
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3c of this license or (at your option) any
% later version. The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3c or later is part of all distributions
% of LaTeX version 2005/12/01 or later.
%
% This work has the LPPL maintenance status "maintained".
%
% The Current Maintainer of this work
% is the TeX4ht Project <http://tug.org/tex4ht>.
%
% If you modify this program, changing the
% version identification would be appreciated.

\def\headerps at out#1{}
\let\Form\relax
\let\endForm\relax

It fixes spurious <form> elements that are inserted in the first and
the last HTML file. They cause make4ht post-processing to fail. Thin
in turn results in lot of spurious <span> elements for Czech accented
characters in the unprocessed files.

Best regards,
Michal