TeX4ht superscript symbol problem

Question

I have small tex file which is as the below

%%%%%%%%%%%%%%%test.tex%%%%%%%%%%%%%%%%%

\documentclass{article}

\def\mysubsup#1#2#3{#1_{#2}^{#3}}

\begin{document}

This is small sample $\mysubsup{P}{2}{3}$

\end{document}

When I run as the below

htlatex test.tex "xhtml, mathltx, early_, early^"

The output html has the missing character of "^"

This is small sample

How to retrieve the superscript symbol

Thanks Baskar

Answer 1

Subscripts and superscripts in macros are common source of problems in tex4ht, it is usually needed to redefine these macros in tex4ht patch files, or in the custom config file. early_ and early^ options try to fix this problem, but the fail often.

Since in your case the macro is defined by you in the preamble, best solution is to modify it to be compatible:

 \def\mysubsup#1#2#3{{#1}\sb{#2}\sp{#3}}

first change is to include your first argument in a group, in order to include the whole contents of the argument in the base. \sb and \sp macros works for subscripts resp. superscripts without problems

The default output with htlatex test.tex "xhtml,mathltx:

You may get better output with mathml option, but it works only in Firefox browser (you can use mathjax to render mathml in other browsers