Seminar example fails on updated TL20

[Scott Kostyshak]

On Thu, Oct 29, 2020 at 01:29:11PM +0200, Dr Eberhard Lisse wrote:
> Scott,
> 
> please let me have a MWE, as I reported the menukeys issue (under the
> subject line "Changes to LaTeX" here.

I believe it suffices to just load the menukeys package. In case that
doesn't do it, here is a somewhat larger MWE that I am sure reproduced
the error for me:

  \documentclass[english]{article}
  \usepackage{lmodern}
  \usepackage[T1]{fontenc}
  \usepackage[utf8]{inputenc}
  \usepackage{babel}
  \usepackage{menukeys}
  \begin{document}
  \capslockmac{}
  \end{document}

Scott
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