texshade: paragraph ended before <...> was complete

[Antanas Vaitkus]

== General description of the issue ==

Documents that use the 'texshade' LaTeX package can no longer be successfully compiled under Ubuntu 22.04 using the 'texshade' version distributed with the Ubuntu 'texlive-latex-extra' package. The issue seems to have already been resolved upstream in version 1.26a 2022-08-29 [1]. I have tested and can confirm that installing a local copy of the 'texshade.sty' upstream file indeed resolves the issue.

== Ubuntu release version ==

Description: Ubuntu 22.04.2 LTS
Release: 22.04

== Package version ==

texlive-latex-extra:
  Installed: (none)
  Candidate: 2021.20220204-1
  Version table:
     2021.20220204-1 500
        500 http://lt.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
        500 http://lt.archive.ubuntu.com/ubuntu jammy/universe i386 Packages

== Expected behaviour ==

The expected behaviour is that upon running the provided command a latex document which imports the 'texshade' package is successfully compiled:

$ latex test.tex

Contents of the test.tex file:

\documentclass{article}

\usepackage{texshade}

\begin{document}

\begin{texshade}{AQPpro.MSF}
\setends{1}{80..112}
\hideconsensus
\end{texshade}

\end{document}

The 'AQPpro.MSF' file that it imported by 'test.tex' is provided as an attachment to this issue. The contents of both files are based on the examples provided in the documentation of the original 'texshade' package.

== Actual behaviour ==

Upon running the following Bash command:

$ latex test.tex

the following error message is generated instead:

(AQPpro.MSF:
Runaway argument?
! Paragraph ended before \inf@@get was complete.
<to be read again>
                   \par
l.7 \begin{texshade}{AQPpro.MSF}

== References ==

[1] https://ctan.org/tex-archive/macros/latex/contrib/texshade

[Antanas Vaitkus (antanas-vaitkus)]

I seem to have forgotten to attach the 'AQPpro.MSF' file.