Joseph Wright skrev: > Lars Hellström wrote: >>> } >>> \cs_generate_variant:Nn \foo_internal:n {V} >> I thought O was the appropriate variant for expanding a token list >> control sequence? > > The re-factor saw us drop "O", and sort-of downgrade "o" (we use it > less). The V specifier lets you write both > > \foo_internal:V \l_my_tl % A macro at the TeX level > > and > > \foo_internal:V \l_my_toks % A toks at the TeX level (o.0) Does it inspect the argument at runtime to figure out which of the two cases is at hand? Looks rather fragile & syntactic sugar to me. > whereas \foo_internal:o would need > > \foo_internal:o {\l_my_tl} > \foo_internal:o { \toks_use:N \l_my_toks } I think I would rather prefer that, myself! > So V is preferred for accessing variables (as the internal structure is > not important), Wouldn't you still need to know the variable's "internal structure" when setting it? Lars Hellström