subformulas: error in latest beta

subformulas: error in latest beta

[Andreas Mang]

Dear all,

I am having problems with subformulas.

The following example does not display a subnumber (i.e. I get (1) and (2) instead of (1a) and (1b)):

%%%%%%%%%%%%% start example %%%%%%%%%%%%
\starttext
% from 
% does not display "subformula numbers""
\placesubformula
\startformula \startalign
\NC a_1 x + b_1 y \NC = c_1 \NR[+][a]
\NC a_2 x + b_2 y \NC = c_2 \NR[+][b]
\stopalign \stopformula
%%%%%%%%%%%%% stop example %%%%%%%%%%%%%

This example is taken from http://dl.contextgarden.net/myway/mathalign.pdf page 6 

I am not quite sure for how long this is not working. I have been using the following alternative, which used to work but now gives me an error with the latest beta (ConTeXt ver: 2012.08.16 22:20 MKIV fmt: 2012.8.18):

%%%%%%%%%%%%% start example %%%%%%%%%%%%
% the following used to work in an earlier version
\startsubformulas[eq:ax=b]
\placeformula
\startformula \startalign
\NC a_1 x + b_1 y \NC = c_1 \NR[+][a]
\NC a_2 x + b_2 y \NC = c_2 \NR[+][b]
\stopalign \stopformula
\stoptext
%%%%%%%%%%%%% stop example %%%%%%%%%%%%%

Any suggestions?

Cheers,
Andreas
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Re: subformulas: error in latest beta

[Andreas Mang]

sorry...

the error message is:

TeX capacity exceeded, sorry [ ...

\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 
\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 
\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 
\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 
\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 
\strc_formulas_handle_sub_numbering ..._numbering 
                                                  \fi 

Am Aug 18, 2012 um 9:01 PM schrieb Andreas Mang:

> Dear all,
> 
> I am having problems with subformulas.
> 
> The following example does not display a subnumber (i.e. I get (1) and (2) instead of (1a) and (1b)):
> 
> %%%%%%%%%%%%% start example %%%%%%%%%%%%
> \starttext
> % from 
> % does not display "subformula numbers""
> \placesubformula
> \startformula \startalign
> \NC a_1 x + b_1 y \NC = c_1 \NR[+][a]
> \NC a_2 x + b_2 y \NC = c_2 \NR[+][b]
> \stopalign \stopformula
> %%%%%%%%%%%%% stop example %%%%%%%%%%%%%
> 
> This example is taken from http://dl.contextgarden.net/myway/mathalign.pdf page 6 
> 
> I am not quite sure for how long this is not working. I have been using the following alternative, which used to work but now gives me an error with the latest beta (ConTeXt ver: 2012.08.16 22:20 MKIV fmt: 2012.8.18):
> 
> %%%%%%%%%%%%% start example %%%%%%%%%%%%
> % the following used to work in an earlier version
> \startsubformulas[eq:ax=b]
> \placeformula
> \startformula \startalign
> \NC a_1 x + b_1 y \NC = c_1 \NR[+][a]
> \NC a_2 x + b_2 y \NC = c_2 \NR[+][b]
> \stopalign \stopformula
> \stoptext
> %%%%%%%%%%%%% stop example %%%%%%%%%%%%%
> 
> Any suggestions?
> 
> Cheers,
> Andreas
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

--
Andreas Mang, MSc
   Research Associate

UNIVERSITY OF LUEBECK
   INSTITUTE OF MEDICAL ENGINEERING

   Division of Computer Science, 
   Engineering and Natural Sciences

   Ratzeburger Allee 160, Building 64
   23562 Luebeck, Germany

   Phone: +49 (0) 451 500 5416
   Fax:   +49 (0) 451 500 5403
   mang@imt.uni-luebeck.de
   http://www.imt.uni-luebeck.de

___________________________________________________________________________________
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___________________________________________________________________________________

Re: subformulas: error in latest beta

[Hans Hagen]

On 18-8-2012 21:04, Andreas Mang wrote:
> \startsubformulas[eq:ax=b]
>>\placeformula
>>\startformula \startalign
>>\NC a_1 x + b_1 y \NC = c_1 \NR[+][a]
>>\NC a_2 x + b_2 y \NC = c_2 \NR[+][b]
>>\stopalign \stopformula
>>\stoptext

You can put this in cont-new.mkiv (after \unprotect):

\def\strc_formulas_handle_sub_numbering
   {\let\strc_formulas_handle_sub_numbering\relax % else error
    \doiftextelse\currentsubformulasuffix
      {\strc_counters_setown_sub\v!formula\plustwo\currentsubformulasuffix}
      {\strc_counters_increment_sub\v!formula\plustwo}%
    \placecurrentformulanumber}




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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

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___________________________________________________________________________________

Re: subformulas: error in latest beta

[Andreas Mang]

Am Aug 19, 2012 um 11:55 AM schrieb Hans Hagen:
> You can put this in cont-new.mkiv (after \unprotect):
> 
> \def\strc_formulas_handle_sub_numbering
>   {\let\strc_formulas_handle_sub_numbering\relax % else error
>    \doiftextelse\currentsubformulasuffix
>      {\strc_counters_setown_sub\v!formula\plustwo\currentsubformulasuffix}
>      {\strc_counters_increment_sub\v!formula\plustwo}%
>    \placecurrentformulanumber}

Thanks Hans! Works nicely (as always).

Just as minor comment in case someone faces the same problem:

There's already a

\def\strc_formulas_handle_sub_numbering

in cont-new.mkiv (line 36; ConTeXt ver: 2012.08.16 22:20 MKIV fmt: 2012.8.21). So to make this fix work I had to redefine / replace the original command instead of just putting it there.

Cheers,
Andreas
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________