Ceci est une ancienne révision du document !

— title: How to break the 9-argument limit category: programming tags: macros permalink: /FAQ-moren9 —

If you think about it, you will realise that Knuth's command definition syntax: latex \def\blah#1#2 … #9{<macro body>}  is intrinsically limited to just 9 arguments. There's no direct way round this: how would you express a 10th argument?&nbsp;&mdash; and ensure that the syntax didn't gobble some other valid usage?

If you really must have more than 9 arguments, the way to go is: <!– {% raw %} –> latex \def\blah#1#2 … #9{%

\def\ArgI{{#1}}%
\def\ArgII{{#2}}%
...
\def\ArgIX{{#9}}%
\BlahRelay

} \def\BlahRelay#1#2#3{%

% arguments 1-9 are now in
%   \ArgI-\ArgIX
% arguments 10-12 are in
%   #1-#3
<macro body>%

}  <!– {% endraw %} –> This technique is easily extendible by concert pianists of the TeX keyboard, but is really hard to recommend.


family=Primulaceae,
location=Coldham's Common,
locationtype=Common grazing land,
date=1995/04/24,
numplants=50,
soiltype=alkaline

}  <!– {% endraw %} –> The merit of such verbosity is that it is self-explanatory: the typist doesn't have to remember that argument twelve is soiltype, and so on: the commands may be copied from field notes quickly and accurately.

2_programmation/macros/definir_une_macro_a_plus_de_9_arguments.1528030741.txt.gz · Dernière modification: 2018/06/03 14:59 par joseph.wright