Re: rule=on in \columnset?

[Jelle Huisman <jelle@jhnet.nl>]

Jelle Huisman wrote:
> Maybe I miss something, but it looks there is no rule=on command for use 
> in columnsets? I just want a vertical line between the columns in my 
> columnset, how do I get that?

Answering myself: I have found this solution, using an MP background: 
http://archive.contextgarden.net/message/20080305.203901.d1d3eccf.en.html

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

\startuseMPgraphic{columnrule}
path p ; p := unitsquare xyscaled (OverlayWidth+5mm,OverlayHeight) ;
draw lrcorner p -- urcorner p ;
setbounds currentpicture to p ;
\stopuseMPgraphic

\defineoverlay[columnrule][\useMPgraphic{columnrule}]

\setupcolumnset[example][1,2][background=columnrule]

\setupcolumnsetlines[example][2][1][-26]
\setupcolumnsetlines[example][2][2][-26]
\setupcolumnsetlines[example][2][3][-26]

\starttext

\startcolumnset[example]
\dorecurse{10}{\input knuth}
\stopcolumnset

\stoptext
%/sample%

The only problem is that the height of the columnrule is fixed, which 
doesn't look right with balanced columns :-( Would it be possible to 
force this MPgraphic{columnrule} to use the actual height of the 
balanced columns, instead of going all the way down to the bottom of the 
page regardless of the actual column height? Or should I give up on this 
question? (I'm on MkII/XeTeX for this project, so no lua based solution 
possible.)

Many thanks,

Jelle
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