[NTG-context] Re: How to set section title based on section content?

[Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>]

Joel via ntg-context schrieb am 09.03.2024 um 16:01:
> 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

When each section contains nothing except the \event command I would 
remove the section titles from the document itself and place them as 
part of the \event command.

\define[1]\Event
   {\startsection[title={#1}]
    \input{knuth}
    \stopsection}

\starttext

\Event{Neon Tetras}

\Event{Detective Stories}

\stoptext

Wolfgang
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