Snippet 19 generates Parent-Child 'Reference/' --> 'text-unit/user' warning

[jfbu]

19

%% -*- mode: latex -*-
%% LaTeX2e file `etocsnippet-19.tex'
%% generated by the `filecontentsdef' environment
%% from source `etoc' on 2024/01/12.
%% EDITED: added chapter style!
\begingroup
\etocglobaldefs % necessary for \etocname etc... to survive &
\makeatletter
%<irrelevant hack into longtable from original post has been removed>

% observe the locations of the \\
\etocsetlinestyle{part}
  {}
  {}
  {\\\hline\multicolumn{3}{c}{\bfseries\vrule height6ex depth3ex width0pt
                              \makebox[0pt]{\etocifnumbered{\etocnumber. }{}\etocname}}}
  {}

\etocsetlinestyle{chapter}
             {}
             {\\\hline\hline}
             {\multicolumn{3}{|c|}{\etocname}}
             {}


\etocsetlinestyle{section}
  {}
  {\etociffirst{\\\hline}{\\}}
  {\etocnumber&\etocname &\etocpage }
  {}

\etocsetlinestyle{subsection}
  {}
  {\\}
  {&\makebox[1cm][c]{\etocnumber}%
    \parbox[t]{\dimexpr6cm-\tabcolsep\relax}{\sloppy\itshape\etocname\strut}%
   &\itshape\etocpage }
  {}

\etocsettocstyle
    {\hypersetup{hidelinks}%
     \begin{longtable}{|>{\bfseries}c|p{7cm}|r|}
     \hline
     \multicolumn{3}{|c|}{\Large\bfseries\strut\strut TABLE OF CONTENTS}%
     }
    {\\\hline\end{longtable}}

\etocsetnexttocdepth {subsection}

\tableofcontents
\endgroup

[jfbu]

The longtable hack is irrelevant here and will be removed.

[jfbu]

Maybe is a manifestation of #24.