Will Robertson wrote:
> Well, I'll leave it there for now but I wonder if that implies we need a
> macro that has "setup" parameters:
> 
> \tlist_rescan:nn{
>  \char_make_other:N \$
>  \int_set:Nn \endlinechar {\c_minus_one}
> }{
>  $a^1$
> }

Hello Will,

Not a bad idea: fits in with the whole expl3 concept as it removes some
of the detail (which most people don't care about).

Joseph