On 8/3/2020 10:10 PM, Otared Kavian wrote:

Hi Hans,

A file which used to be typeset correctly with the previous versions of lmtx, now produces an error. Despite the error message being extremely cryptic:

Error ! Missing number, treated as zero

I could guess the origin of the bug, which seems to be \wordright, but although the following minimal example shows a bug it does not produce the same ERROR output page:

%%%% the square ''end of proof'' \definesymbol[Fin][\mathematics{\square}] \def\qed{\wordright{\symbol[Fin]}}

\starttext \startformula a^2 + b^2 = c^2 \stopformula \qed % the problem is here \stoptext

In the above example if one adds something before \qed, then the square end-of-proof appears. However in my real file ConTeXt ouputs an error page and says: Error ! Missing number, treated as zero. One can debate if the old behavior was ok ... wordright is meant for adding something at the end of a paragraph and you have none here. You can add a \strut in your definition to force a line.

The lmtx implementation actually permit this: \definesymbol[Fin][\mathematics{\square}] \def\qed{\strut\wordright{\symbol[Fin1]}\wordright{\symbol[Fin2]}\wordright{\symbol[Fin3]}} \starttext \startformula a^2 + b^2 = c^2 \stopformula \qed % the problem is here \stoptext i'm still exploring this but it has to do with collecting stuff, as in: \wordright{before} test \par test \wordright{before} \par (i'll look at the number issue which indeed looks a like a bug) ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------