tlatex fragments and beamer presentations

[Marko Schuetz-Schmuck]

Dear All,

I'm preparing some beamer slides to summarize some of Leslies video
lectures and it seems there is a conflict between tlatex and
beamer. Apparently \. is defined in both and running latex on the
resulting file will end with

Runaway argument?
! File ended while scanning use of \next.

I intend to use prepare more beamer slides that will involve TLA+ and
would welcome advice on how others deal with this combination.

Here is a simplified example

\documentclass[compress,notes=hide]{beamer}
\let\oldImplies=\implies
\let\implies=\undefined
\usepackage{tlatex}
\begin{document}

\begin{frame}{Slide title}
\begin{tla}
IF pc = "start" THEN
i' \in 0..1000 /\
pc' = "middle"
ELSE IF pc = "middle" THEN
i' = i + 1 /\
pc' = "done"
ELSE FALSE
\end{tla}
\begin{tlatex}
\@x{ {\IF} pc \.{=}\@w{start} \.{\THEN}}%
\@x{\@s{13.31} i \.{'}\@s{5.25} \.{\in} 0 \.{\dotdot} 1000 \.{\land}}%
\@x{\@s{13.31} pc \.{'} \.{=}\@w{middle}}%
\@x{ \.{\ELSE} {\IF} pc \.{=}\@w{middle} \.{\THEN}}%
\@x{\@s{12.29} i \.{'} \.{=} i \.{+} 1 \.{\land}}%
\@x{\@s{12.29} pc \.{'} \.{=}\@w{done}}%
\@x{ \.{\ELSE} {\FALSE}}%
\end{tlatex}
\end{frame}
\end{document}


Best regards,

Marko

[Markus Kuppe]

Hi Marko,

I frequently embed TLA+ and PlusCal in Beamer presentations. Although I
use LyX [1] as a front-end to LaTex, my setup [2] might be useful for
you. See the lyx, latex, and pdf files [3] as a proof of concept for
your if-then-else above.

Hope this helps,
Markus

[1] https://www.lyx.org/
[2] https://lemmster.de/tla-in-lyx.html
[3] https://tla.msr-inria.inria.fr/kuppe/poc.zip

[Marko Schuetz-Schmuck]

Dear Markus,

thank you very much! I had an older tlatex.sty, but the main key to
the solution was to use fragile with the beamer frame.

Best regards,

Marko

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--
Prof. Dr. Marko Schütz-Schmuck
Department of Mathematical Sciences
University of Puerto Rico at Mayagüez
Mayagüez, PR 00681