Hi,
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.
\starttext
\def\showsecond#1{\show}
\edef\abc{\scantokens{a b}}
\expandafter\showsecond\abc
\edef\abc{\detokenize{a b}}
\expandafter\showsecond\abc
\stoptext
prints
> the character
> blank space
Best regard,
Marcel Krüger
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