The code below contains a change markup and the intent is that it be printed. I get:
ERROR: LaTeX Error: \verb ended by end of line.
How can I fix it?
foo.dtx
% \iffalse meta-comment
% !TEX program = pdfLaTeX
%<*internal>
\iffalse
%</internal>
%<*readme>
-----------------------------------------------------------------------------------
##### foo --- dummy dtx file
------------------------------------------------------------------------------------
%</readme>
%<*internal>
\fi
\def\nameofplainTeX{plain}
\ifx\fmtname\nameofplainTeX\else
\expandafter\begingroup
\fi
%</internal>
%<*install>
\input l3docstrip.tex
\keepsilent
\askforoverwritefalse
\preamble
------------------------------------------------------------------------------
foo --- dummy dtx file
------------------------------------------------------------------------------
\endpreamble
\postamble
Copyright (C) 2021 by Author
\endpostamble
\generate{
\file{\jobname.sty}{\from{\jobname.dtx}{package}}
}
%</install>
%<install> \endbatchfile
%<*internal>
\generate{
\file{\jobname.ins}{\from{\jobname.dtx}{install}}
}
\nopreamble\nopostamble
\generate{
\file{README.md}{\from{\jobname.dtx}{readme}}
}
\ifx\fmtname\nameofplainTeX
\expandafter\endbatchfile
\else
\expandafter\endgroup
\fi
%</internal>
%<package> \NeedsTeXFormat{LaTeX2e}[2021-06-01]
%<package> \ProvidesExplPackage
%<package> {foo} % Package name
%<package> {2021-08-03} % Release date
%<package> {1.0} % Release version
%<package> {foo --- dummy dtx file }
%<*driver>
\documentclass[show-notes]{l3doc}
\EnableCrossrefs
\CodelineIndex
\RecordChanges
\usepackage{foo}
\usepackage{hyperref}
\begin{document}
\DocInput{\jobname.dtx}
\end{document}
%</driver>
% \fi
%
% \GetFileInfo{\jobname.sty}
% \begin{documentation}
%
% \changes{Version 1.0}
% {2020/08/03}
% {Initial version}
%^^A {\DTMdate{2020-08-03}}
%
% \StopEventually{\clearpage{}\PrintChanges\PrintIndex}
% \end{documentation}
% \begin{implementation}
% \begin{macrocode}
%<*package>
%<@@=foo>
\ExplSyntaxOn
% \end{macrocode}
% \begin{macrocode}
\ExplSyntaxOff
%</package>
% \end{macrocode}
% \end{implementation}
% \Finale
% ^^A\PrintIndex \PrintChanges
\endinput
/latex-dev/base/doc.dtx
% \DescribeMacro\PrintIndex
% To read in and print the sorted index, just put the
% |\PrintIndex| command as the last (commented-out, and thus
% executed during the documentation pass through the file) command
% in your package file. Precede it by any bibliography commands
% necessary for your citations.
% Alternatively, it may be more convenient to put all such calls
% amongt the arguments of the |\StopEventually| macro, in
% which case a |\Finale| command should appear at the end of
% your file.
PS: only \PrintIndex is the problem
