Re: [NTG-context] Weird error

On Wed, 10 Sep 2014, Wolfgang Schuster wrote:

Am 10.09.2014 um 18:37 schrieb Aditya Mahajan :

...

Hi,

There was a question on TeX.SX about an error message http://tex.stackexchange.com/questions/200474/setuppagenumberinglocation-cau...

The following MWE shows the same error

\setupfootertexts[\namedheadnumber{chapter}] \setuppagenumbering[location=,alternative=doublesided]

\starttext

\completecontent

\chapter{Creating device driver}

\section{How to create the}

Chapter text

\stoptext

which gives

lua error > error on line 8 in file /tmp/test.tex:

...uild/src/tex/texmf-context/tex/context/base/strc-doc.lua:904: attempt to index field 'numbers' (a nil value) stack traceback: ...uild/src/tex/texmf-context/tex/context/base/strc-doc.lua:904: in function 'getsectionnumber' [\directlua]:1: in main chunk

The error is weird because it only appears when all parts of the minimal example are present. If I comment either or `location=,` or `alternative=doublesided` or `\completecontent` or `\section{...}`, the error goes away!

Any thoughts?

The error arises only when there is no aux file. A alternative to \namedheadnumber{XXX} is \getmarking[XXXnumber].

\setupfootertexts[{\getmarking[chapternumber]}]

Thanks! Aditya