pandoc can't process \MakeUppercase

Question

I try convert latex book to OpenOffice ODT format.
And my pandoc 1.17.2 (Debian 9x64) can't process \MakeUppercase macros.

MWE:

\documentclass{letter}
\begin{document}
test \MakeUppercase{Case Text.} test
\end{document}

running pandoc, I get: (plain format here - for clearness)

$ pandoc -f latex -t plain  main-uppercase.tex
test test

Now I found doubtful way: from script rewrite preamble and write:

\renewcommand{\MakeUppercase}[1]{<upp_start>#1<upp_stop>}

and process odt-file (pandoc convert correctly with this "tags") automatically via ooobasic macros from LibreOffice, but...
May be there is another way?
Thank you.

ps: \textsc{} - work correctly

Answer 1

Try updating your Pandoc.

I'm on v2.7.1.

The input.tex:

\documentclass{letter}
\begin{document}
test \MakeUppercase{Case Text.} test
\end{document}

The command:

pandoc -f latex -t plain input.tex

The output:

test CASE TEXT. test