[luatex] a question about the names \Umathcharnumdef etc

[jfbu]

Le 16 oct. 2015 à 10:35, jfbu <jfbu at free.fr> a écrit :

> Apart from that I am curious to get explanation as to your TL2012 result
>> \Umathcharnumdef=undefined.
> l.4 \show\Umathcharnumdef
> 
>> \luatexUmathcharnumdef=\Umathcharnumdef.
> l.5 \show\luatexUmathcharnumdef
> 
> which is strange (and the \luatexUmathcharnumdef does work)

ah ok sorry

\let\y\box

\let\box\undefined

\show\box

\show\y

produces this kind of things

best wishes

Jean-François