[NTG-context] \placecontent problems

[Idris Samawi Hamid]

Dear gang:

I have a \placecontent-type problem. I want to collect all the subsections and
 subsubsections into a list, then place that list into an appendix 
(conversion=Characters):

\definecombinedlist[synopsis][subsection,subsubsection][textstyle=\tf]
\setupcombinedlist [synopsis][alternative=c,textstyle=\tf]

There are two problems:

1. If I place the content list within a chapter, the list disappears. It works 
if I place it before the chapter heading. Thus, I need a way to do 
\placesynopsis beneath a chapter heading;

2. \start-\stopappendices begins a new sectionblock, therefore  \placesynopsis 
does nothing, even if I do not place it within a chapter/appendix.

Thus (assuming we can solve problem 1) I need a way to change the conversion 
to Characters on the fly within the bodymatter sectionblock. I need, e.g.

1. A Chapter
2. Another Chapter
A. An Appendix

within the same sectionblock.

Is this possible? I notice that conversion=Characters appears to be defined 
for the global sectionblock, but not for local headings. It would be nice if I 
could do something like

\definehead[appendix][chapter]
\setuphead[appendix][conversion=Characters]

with the first instance of \appendix starting with `A' (i.e., decoupled from 
the chapter numbers).

See the attached file for some experiments.

Best
Idris
========================================================
\setupoutput[pdftex]%

\definecombinedlist[summary][chapter][textstyle=\tf]
\setupcombinedlist [summary][alternative=c,textstyle=\tf]

\definecombinedlist[synopsis][subsection,subsubsection][textstyle=\tf]
\setupcombinedlist [synopsis][alternative=c,textstyle=\tf]

\starttext

\startbodymatter
\placesummary
\page
\placesynopsis

\chapter{This is a test.}

\subsection{This is a subtest.}

\subsubsection{This is a subsubtest.}

\chapter{This is another test.}

\subsection{This is another subtest.}

\subsubsection{This is another subsubtest.}

\chapter{Synopsis}
\placesynopsis
\stopbodymatter

\startappendices
\placesynopsis

\chapter{Synopsis}
\placesynopsis
\stopappendices

\stoptext

============================
Professor Idris Samawi Hamid
Department of Philosophy
Colorado State University
Fort Collins, CO 80523