Re: \documentvariable (used in environment)

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

Alan Braslau schrieb am 23.07.2020 um 00:21:
> Hello,
> 
> I have put the following in an environment
> 
> \startenvironment MYENVIRONMENT
> 
> \setupdocument
>    [metadata:title={\documentvariable{title}},
>     metadata:subtitle={\documentvariable{subtitle}},
>     metadata:author={\documentvariable{author}},
>     metadata:keywords={\documentvariable{keywords}}]
> 
> \stopenvironment
> 
> and correct use would be
> 
> \environment MYENVIRONMENT
> 
> \startdocument [title={My title}]
> 
> \stopdocument
> 
> because, of course, the environment contains more than \setupdocument 
> such as font loading that should be done before the \startdocument.
> 
> The metadata does not get set properly, having to do with expansion or 
> other notions of TeX that I never seem to get right. What might be the 
> proper way of handling this?

What exactly doesn't work and do you get the same problems when you set 
the values in the following minimal example (everything has to be in the 
same file).

%%%% begin example
\setupdocument
   [metadata:title={\documentvariable{title}},
    metadata:subtitle={\documentvariable{subtitle}},
    metadata:author={\documentvariable{author}},
    metadata:keywords={\documentvariable{keywords}}]

\startdocument [title={My title}]
\input knuth
\stopdocument
%%%% end example

Wolfgang

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