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:
Somethine like:
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{expl3}
\begin{document}
\ExplSyntaxOn
\cs_new:Npn \tlist_rescan:nn #1#2 {
\group_begin:
\etex_everyeof:D { \exp_not:N }
#1
\toks_set:Nx \l_tmpa_toks { \etex_scantokens:D {#2} }
\exp_args:NV \group_end: \l_tmpa_toks
}
\tlist_rescan:nn { \char_make_other:N \^ \char_make_other:N \_ }
{1_2^3}
\ExplSyntaxOff
\end{document}
perhaps?
--
Joseph Wright