testing every possible combination of nesting

<p>================================================================================</p>
<p>================================================================================</p>

\begin{div}

\begin{div}
div inside same div, should not work
\end{div}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{div}

\begin{div2}
div inside diff div, should work
\end{div2}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{div}
div inside dropdown, should work
\end{div}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{div}
div inside dropdown summary, should work
\end{div}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{div}
div inside nested env, should work
\end{div}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{div}
div inside nested env inner, should work
\end{div}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{div}
div inside div thm, should work
\end{div}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{div}
div inside dropdown thm, should work
\end{div}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{div}
div inside dropdown thm summary, should work
\end{div}

\end{summary}

\end{dropdown_thm}

<p>================================================================================</p>
<p>================================================================================</p>

\begin{div}

\begin{dropdown}

\begin{summary}
dropdown inside div, should work
\end{summary}

\end{dropdown}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{dropdown}

\begin{summary}
dropdown inside same dropdown, should not work consistently
\end{summary}

\end{dropdown}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{dropdown}

\begin{summary}
dropdown inside same dropdown summary, should not work consistently
\end{summary}

\end{dropdown}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{dropdown2}

\begin{summary}
dropdown inside diff dropdown, should not work consistently
\end{summary}

\end{dropdown2}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{dropdown2}

\begin{summary}
dropdown inside diff dropdown summary, should not work consistently
\end{summary}

\end{dropdown2}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{dropdown}

\begin{summary}
dropdown inside nested env, should work
\end{summary}

\end{dropdown}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{dropdown}

\begin{summary}
dropdown inside nested env inner, should work
\end{summary}

\end{dropdown}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{dropdown}

\begin{summary}
dropdown inside div thm, should work
\end{summary}

\end{dropdown}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{dropdown}

\begin{summary}
dropdown inside dropdown thm, should not work consistently
\end{summary}

\end{dropdown}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{dropdown}

\begin{summary}
dropdown inside dropdown thm summary, should not work consistently
\end{summary}

\end{dropdown}

\end{summary}

\end{dropdown_thm}

<p>================================================================================</p>
<p>================================================================================</p>

\begin{div}

\begin{nested_env}

\begin{inner}
nested env inside div, should work
\end{inner}

\end{nested_env}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{nested_env}

\begin{inner}
nested env inside dropdown, should work
\end{inner}

\end{nested_env}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{nested_env}

\begin{inner}
nested env inside dropdown summary, should work
\end{inner}

\end{nested_env}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{nested_env}

\begin{inner}
nested env inside same nested env, should not work
\end{inner}

\end{nested_env}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{nested_env}

\begin{inner}
nested env inside same nested env inner, should not work
\end{inner}

\end{nested_env}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{nested_env2}

\begin{inner2}
nested env inside diff nested env, should not work consistently
\end{inner2}

\end{nested_env2}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{nested_env2}

\begin{inner2}
nested env inside diff nested env inner, should not work consistently
\end{inner2}

\end{nested_env2}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{nested_env}

\begin{inner}
nested env inside div thm, should work
\end{inner}

\end{nested_env}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{nested_env}

\begin{inner}
nested env inside dropdown thm, should work
\end{inner}

\end{nested_env}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{nested_env}

\begin{inner}
nested env inside dropdown thm summary, should work
\end{inner}

\end{nested_env}

\end{summary}

\end{dropdown_thm}

<p>================================================================================</p>
<p>================================================================================</p>

\begin{div}

\begin{div_thm}
div thm inside div, should work
\end{div_thm}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{div_thm}
div thm inside dropdown, should work
\end{div_thm}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{div_thm}
div thm inside dropdown summary, should work
\end{div_thm}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{div_thm}
div thm inside nested env, should work
\end{div_thm}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{div_thm}
div thm inside nested env inner, should work
\end{div_thm}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{div_thm}
div thm inside same div thm, should not work
\end{div_thm}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{div_thm2}
div thm inside diff div thm, should work
\end{div_thm2}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{div_thm}
div thm inside dropdown thm, should work
\end{div_thm}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{div_thm}
div thm inside dropdown thm summary, should work
\end{div_thm}

\end{summary}

\end{dropdown_thm}

<p>================================================================================</p>
<p>================================================================================</p>

\begin{div}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside div, should work
\end{summary}

\end{dropdown_thm}

\end{div}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\end{summary}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside dropdown, should not work consistently
\end{summary}

\end{dropdown_thm}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown}

\begin{summary}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside dropdown summary, should not work consistently
\end{summary}

\end{dropdown_thm}

\end{summary}

\end{dropdown}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\end{inner}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside nested env, should work
\end{summary}

\end{dropdown_thm}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{nested_env}

\begin{inner}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside nested env inner, should work
\end{summary}

\end{dropdown_thm}

\end{inner}

\end{nested_env}

<p>--------------------------------------------------------------------------------</p>

\begin{div_thm}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside div thm, should work
\end{summary}

\end{dropdown_thm}

\end{div_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside same dropdown thm, should not work
\end{summary}

\end{dropdown_thm}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{dropdown_thm}

\begin{summary}
dropdown thm inside same dropdown thm summary, should not work
\end{summary}

\end{dropdown_thm}

\end{summary}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\end{summary}

\begin{dropdown_thm2}

\begin{summary}
dropdown thm inside diff dropdown thm, should not work consistently
\end{summary}

\end{dropdown_thm2}

\end{dropdown_thm}

<p>--------------------------------------------------------------------------------</p>

\begin{dropdown_thm}

\begin{summary}

\begin{dropdown_thm2}

\begin{summary}
dropdown thm inside diff dropdown thm summary, should not work consistently
\end{summary}

\end{dropdown_thm2}

\end{summary}

\end{dropdown_thm}
