[NTG-context] \setupmarginrules

[Hans Hagen]

Vit Zyka wrote:
> Willi Egger wrote:
>   
>> Hi Vit!
>>
>> Thanks for this patch. Do you know why the rulethickness must be given 
>> in integer dimension. e.g. 2.5pt will cause an error, telling that a 
>> wrong dimension is used.
>>
>> Willi
>>     
>
> Due to my fault. Sorry. This is a little bit better solution:
>
> -----------------------------------------------
> \defineparagraphs       [poem][n=2,distance=20pt]
> \setupparagraphs        [poem][1][width=.25\textwidth]
> \setupparagraphs        [poem][2][rule=on,rulethickness=5.5pt]
>
> \unprotected
> \def\doalinealijn#1#2%
>    {\doifelsevalue{\??al#2\the\alteller\c!rule}\v!on
>       {\dimen2=#1\relax
>        \dimen3=\getvalue{\??al#2\the\alteller\c!rulethickness}% VZ
>        \hskip.5\dimen2
> %      \hskip-\linewidth
>        \hskip-.5\dimen3 % VZ
> %      \vrule\!!width\linewidth
>        \vrule\!!width\dimen3 % VZ
>        \hskip-.5\dimen3 % VZ
>        \hskip.5\dimen2}
>       {\hskip#1}}
>
> \starttext
> \startpoem
> \input knuth
> \nextpoem
> \input knuth
> \stoppoem
> \stoptext
> ----------------------------------------------------
>   
don't use dimen 3 locally (tex convention, has to do with stack build-up) 

Hans 

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