Hi,
this seems like a bug in the MetaFun or column set code. Printing a
vertical rule between columns fails with
! terminal: >> NOfTextColumns-1
! Improper final value has been replaced by 0.
<to be read again>
The code also fails, when the column set code is commented out, but
then the NOfTextColumns doesn't make sense any longer. Older betas
work perfectly.
\startuseMPgraphic{verticalline}
for i=1 upto NOfTextColumns-1 :
draw (rightboundary TextColumns[i]) shifted (2.5mm,0) shifted
-\MPxy\textanchor;
endfor ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\defineoverlay [verticalline] [\useMPgraphic{verticalline}]
\setupbackgrounds [text] [background=verticalline]
\definecolumnset [example] [n=2]
\starttext
\startcolumnset [example]
\input knuth
\stopcolumnset
\stoptext
Marco
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