Re: rule=on in \columnset?

[Jelle Huisman <jelle@jhnet.nl>]

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Jelle Huisman wrote:
> Wolfgang Schuster wrote:
>   
>> \startuseMPgraphic{columnrule}
>> path p ; p := unitsquare xyscaled (OverlayWidth+5mm,OverlayHeight) ;
>> draw (xpart(urcorner p),ypart(urcorner
>> p)-\the\dimexpr\noflines\lineheight\relax) -- urcorner p ;
>> setbounds currentpicture to p ;
>> \stopuseMPgraphic
>>     
>
> Thanks Wolfgang!, this is precisely what I need. I'll wikify it. (Think 
> it's time to learn some MP...)

Oeps, I have found one problem: if there is text before the columnset, 
like a chapter header, the text in the columnset moves down but the 
{columnrule} stays at the top of the page... How can I modify the code 
the make sure that this doesn't happen? See sample:

%sample%
\definecolumnset[example][n=3,distance=5mm]

\startuseMPgraphic{columnrule}
path p ; p := unitsquare xyscaled (OverlayWidth+5mm,OverlayHeight) ;
draw (xpart(urcorner p),ypart(urcorner
p)-\the\dimexpr\noflines\lineheight\relax) -- urcorner p ;
setbounds currentpicture to p ;
\stopuseMPgraphic
\defineoverlay[columnrule][\useMPgraphic{columnrule}]

 \setupcolumnset[example][1,2][balance=yes,background=columnrule]
 \setupcolumnsetlines[example][1][1][-35]
 \setupcolumnsetlines[example][1][2][-35]
 \setupcolumnsetlines[example][1][3][-35]

 \starttext

%\input knuth % <- uncomment this to see problem

 \startcolumnset[example]
 \dorecurse{2}{\input knuth}
 \stopcolumnset
 \stoptext
 %/sample%

Thanks again,

Jelle (MkII/XeTeX)

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