[NTG-context] \scantokens in luametatex

Hans Hagen j.hagen at xs4all.nl
Thu Aug 13 16:44:39 CEST 2020


On 8/13/2020 2:31 PM, Marcel Fabian Kr├╝ger wrote:

> in the current luametatex upload, \scantokens (and also \scantextokens)
> behave odd: They seem to act like \detokenize, except that spaces get
> catcode other instead of catcode space:
> 
> \starttext
> \edef\abc{\scantokens{\relax}}
> \abc
> \edef\abc{\scantextokens{\relax}}
> \abc
> \stoptext
> 
> used to result in an empty output file but with luametatex, it  writes \relax \relax to the output.
i'll look at it (i probably forget to set the catcodetable)

here is the generalized case:

     \def\foo{!}

     \edef\abc{\tokenized catcodetable \catcodetable {a\relax \foo}} \abc
     \edef\abc{\tokenized catcodetable -1            {a\relax \foo}} \abc

Hans

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