Hi,
I uploaded a new beta:
The character definitions have been updated (esp math, thanks to Aditya).
After some testing by Wolfgang the decision was made to permit _ in
macronames in modules. So, the following works:
\unprotect
\def\test_test_test#1#2{#1+#2=whatever}
\test_test_test{1}{2}
\protect
In principle we can also support ^. The mkiv code base no longer uses _
and ^ in math in modules and those who write modules should avoid them
as well. So, when writing macros in unprotected mode, one schould use:
$x\normalsuperscript2\normalsubscript n$
Taco and I think that we can safely switch to \nonknuthmode in mkiv so
this might happen soon (which means that _ and ^ become normal
characters in text mode). Actually, being permanently in \nonknuthmode
would permit _ and ^ in modules again.
We could even make _ and ^ always letters outside math in which case
\text_test etc would become possible everywhere but that needs some more
consideration. In that case
\def\make_subscript#1#2{\mathematics{#1_{#2}}}
\make_subscript{x}{2}
becomes valid everywhere. We can discuss this in detail at the dev list.
Hans
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