Regarding your request: 1) Already supported. 2) I'll dig into it, but I'm not sure if it's possible (read on).
To show 1) is done and 2) is not:
$ echo
'<html><body><p>Éαβγ<sup>2</sup></p></body></html>' |
gnuhtml2latex -s - 2>/dev/null
% This file was converted from HTML to LaTeX with
% gnuhtml2latex program
% (c) Tomasz Wegrzanowski <man...@beer.com> 1999
% (c) Gunnar Wolf <gw...@gwolf.org> 2005-2010
% Version : 0.4.
\documentclass{article}
\begin{document}
\par Éαβγ2\end{document}
Now, I'll start looking into it - But I think the problem with <sup>
is that the equivalent '^' LaTeX modifier (as well as the '_' one for
<sub>) are only available under math mode, and that cannot be
guaranteed to be always the case. I'll look into it, anyway.
(Oh! And why did I put the '2>/dev/null'? Because I was able to
reproduce your other bug report! So, I'll go for it)
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