How to set section title based on section content?
I have a document that has some structures like this:
\starttext
\startsection[title={Animals}]
\event{\input knuth }
\stopsection
\startsection[title={Books}]
\event{\input knuth }
\stopsection
\stoptext
The event macro runs a bunch of conditionals, deciding which content to place
inside the section. It places any one of neary 200 possible different types of
content there.
Sadly when I wrote the code, I thought generic titles would be okay. Now I
realize I need to be more specific, giving titles that match the content
inside. I could move the section titles inside the \event macro, but it means
rewriting ~200 other macros.
In other words, how do I define a section title by defining it somewhere in the
content of the \event macro?
\starttext
\startsection[\whatistitle] %<-- would display "Neon Tetras"
\event{\thetitleis{Neon Tetras}\input knuth }
\stopsection
\startsection[\whatistitle] %<-- would display "Detective Stories"
\event{\thetitleis{Detective Stories}\input knuth }
\stopsection
\stoptext
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