Re: \useblocks in section

[Hans Hagen <pragma@wxs.nl>]

David Arnold wrote:

> All,
>
> This doesn't seem to work as expected. Replacing the \useblocks with  
> \selectblocks also produces an unexpected result. What am I doing  
> wrong? I am trying to have only the answers from the chapter show up.

ah, old code, something got lost when i added parameter support ...

\unprotect

\def\getblockstatus#1% is this still ok
  {\dosetfilterlevel{\@@bscriterium}\empty
   \expanded{\doifblklevelelse[#1\sectionseparator\sectionseparator0]}
     {\global\blockpermittedtrue}
     {\global\blockpermittedfalse}%
   \def\blockstatus{#1}}

\def\doselectblocks[#1][#2][#3]%
  {\begingroup
   \doifelsenothing{#3}
     {\getparameters[\??bs][\c!criterium=\v!all,#2]%
      \dodouseblocks[#1][]}
     {\getparameters[\??bs][\c!criterium=\v!all,#3]%
      \dodouseblocks[#1][#2]}}%

\def\selectblocks
  {\dotripleempty\doselectblocks}

\protect

use \selectblocks when you want a criterium

>
> %output=pdf
>
> \defineenumeration[question][location=serried,text=Question]
> \defineenumeration[answer][location=serried,text=Answer]
> \defineblock[question,answer]
> \hideblocks[answer]
>
> \starttext
>
> \chapter{First Chapter}
>
> \input tufte
>
> \beginquestion
> \startquestion
>   What is the square root of 4?
> \stopquestion
> \endquestion
>
> \beginanswer
> \startanswer
>   2
> \stopanswer
> \endanswer
>
> \section{Answers}
>
> \useblocks[answer][criterium=chapter]
>
> \chapter{Second Chapter}
>
> \input tufte
>
> \beginquestion
> \startquestion
>   What is the square root of 9?
> \stopquestion
> \endquestion
>
> \beginanswer
> \startanswer
>   3
> \stopanswer
> \endanswer
>
> \section{Answers}
>
> \useblocks[answer][criterium=chapter]
>
> \stoptext
>
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