I would like to create a macro that defines a display formula, and then redefine the same macro such that the redefinition includes the original display formula followed by another display formula. Here is my attempt. \def\foo{\startformula a = b \stopformula} \foo \edef\foo{\foo \startformula c = d \stopformula} \foo This fails, and I would appreciate help in getting this to work. Thanks, Troy Henderson
Am 07.09.2012 um 06:38 schrieb Troy Henderson
I would like to create a macro that defines a display formula, and then redefine the same macro such that the redefinition includes the original display formula followed by another display formula. Here is my attempt.
\def\foo{\startformula a = b \stopformula} \foo \edef\foo{\foo \startformula c = d \stopformula} \foo
This fails, and I would appreciate help in getting this to work.
Your example works for me when I process it with mkiv but I would use a token list and not a macro to store the content. \starttext % macro \def\foo{\startformula a = b \stopformula} \foo \blank[2*line] \edef\foo{\foo \startformula c = d \stopformula} \foo \blank[2*line] % token list \newtoks\mytoks \appendtoks \startformula a = b \stopformula \to \mytoks \the\mytoks \blank[2*line] \appendtoks \startformula c = d \stopformula \to \mytoks \the\mytoks \stoptext Wolfgang
The \newtoks works great. Can values be assigned to tokens directly instead of appending? Obviously one way it to use \newtoks followed by \appendtoks, but once a token has already been defined, can its content be overwritten? Troy
On 7-9-2012 07:42, Troy Henderson wrote:
The \newtoks works great. Can values be assigned to tokens directly instead of appending? Obviously one way it to use \newtoks followed by \appendtoks, but once a token has already been defined, can its content be overwritten?
\newtoks\mytoks \mytoks{xx} ----------------------------------------------------------------- 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 -----------------------------------------------------------------
participants (3)
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Hans Hagen -
Troy Henderson -
Wolfgang Schuster