On 4/24/2013 5:30 PM, Lars Huttar wrote:
Hello,
I'm encountering the following error, under ConTeXt ver: 2012.05.30 11:26 MKIV fmt: 2013.3.11 int: english/english:
system > tex > error on line 27 in file data/three-volume-book-book-1.tex: terminal: >> NOfTextColumns-1 ! Improper final value has been replaced by 0. <to be read again> : <*> for i=1 upto NOfTextColumns-1: draw (rightboundary TextColumns[i]) shif...
...
17 \safeinput ./data/statistics-for-area-area-africa.tex 18 \safeinput ./data/statistics-for-area-area-europe.tex 19 20 21 22 \input ./macros/E16pagenohead.tex 23 \ifodd \pageno \else \noheaderandfooterlines \null \page[yes]\fi \noheade randfooterlines 24 25 \startptp{ 26 \pagereference[Languages]\pnum{Part II}\ptitle{Language Listings} 27 >> }\stopptp
This error is very odd because:
a) The only place I can find code mentioning "NOfTextColumns-1" is in mp-core.mpii, where it's commented out! % \startuseMPgraphic{whatever} % for i=1 upto NOfTextColumns-1 : % draw (rightboundary TextColumns[i]) shifted ...
But maybe I just haven't been looking in the right places.
b) The place in my .tex document where the error occurs, line 27, is at a \stopptp. Yet there is an essentially identical start/stopptp earlier in the document, where no such error is thrown:
\startptp{ \pagereference[Summaries]\pnum{Part I}\ptitle{Statistical Summaries} }\stopptp
So I guess there's some content in between the two starts/stop ptp's that's laying the stage for the error to occur. I'll be working on a minimal example, but that's time-consuming; and I thought in the meantime, there may be some clues in the above information that could help clarify the nature of the problem, to someone who understands the inner workings of ConTeXt.
It took me a while to figure it out as NOfTextColumns is only used in very special cases and long gone from context (it dates from a previous background implementation). Normally the obsolete code is never seen but in your case consulting the variable might be triggered by the fact that multi_column_first_page_hack is set to true (looks like a quick hack i made for Jelle long ago). I commented it in the mkii source now, hopefully no error message any longer. Hans ps. sometimes there is some specific test code that then depends on other experimental code being present ps. in mkiv it's all redone anyway and i will redo columnsets one of these days too; ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------