Dear John, many thanks for your suggestion ! I would like to have a same 
markdown file for PDF and .docx. Could you help to suggest how to only 
redefine the color macros to no-ops for generating .docx ?

On Sunday, July 22, 2018 at 1:03:51 PM UTC+8, John MacFarlane wrote:
>
>
> You can redefine the color macros to no-ops; (recent) pandoc 
> should be able to expand the macros prior to passing 
> the tex to texmath.  e.g., 
>
>     \renewcommand{\color}[1]{#1} 
>
> Try that. 
>
> J <lixi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:>> writes: 
>
> > Dear John, many thanks for your comment ! Is it possible to just ignore 
> the 
> > color instructions and produce a monochrome one ? I mean, a monochrome 
> one 
> > is much useful than raw latex code. 
> > 
> > On Sunday, July 22, 2018 at 3:09:37 AM UTC+8, John MacFarlane wrote: 
> >> 
> >> 
> >> Sorry, the texmath package (which we use for 
> >> conversions) doesn't support xcolor. 
> >> 
> >> J <lixi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:>> writes: 
> >> 
> >> > $ pandoc MWE1.md --mathml --filter=pandoc-crossref 
> >> --filter=pandoc-citeproc 
> >> > -s -o MWE1.docx 
> >> > [WARNING] Could not convert TeX math 
> >> > 
> >> 
> '\mathrm{\underline{\begingroup\color{magenta}AB\endgroup},\underline{\textcolor{green}{CD}}}', 
>
> >> 
> >> > rendering as TeX: 
> >> >   derline{\begingroup\color{magenta}AB\end 
> >> >                      ^ 
> >> >   unexpected "\\" 
> >> >   expecting "%", "\\label", "\\nonumber" or whitespace 
> >> > $ 
> >> > $ pandoc MWE1.md --mathml --filter=pandoc-crossref 
> >> --filter=pandoc-citeproc 
> >> > -s -o MWE1.pdf --pdf-engine=xelatex 
> >> > $ 
> >> > 
> >> > 
> >> > Could you help to comment how to use color in equations when 
> converting 
> >> to 
> >> > MS Word file ? The MWE1.md attached can be converted to PDF but not 
> to 
> >> > .docx. Many thanks ! 
> >> > 
> >> > -- 
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> >> <javascript:>. 
> >> > To view this discussion on the web visit 
> >> 
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>
> >> 
> >> > For more options, visit https://groups.google.com/d/optout. 
> >> > --- 
> >> > header-includes: 
> >> >     - \usepackage{xcolor} 
> >> > --- 
> >> > 
> >> 
> $\mathrm{\underline{\begingroup\color{magenta}AB\endgroup},\underline{\textcolor{green}{CD}}}$ 
>
> >> 
> >> 
> > 
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>
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>

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