Will Robertson wrote:
> On Fri, Sep 19, 2008 at 1:32 AM, Joseph Wright
> <[log in to unmask]> wrote:
>> I should point out that this was, implicitly, a two-part questions.  Part
>> one was about the primitives, part two is how to execute:
>>
>> \tlp_gset:Nx \g_siunitx_tmpa_tlp {\etex_scantokens:D {#1}}
>>
>> while _ is active (and I guess ideally : is "other").  In my current setup,
>> I only have to worry about @, which I just accept will be a letter.  But I
>> have to have _  active.
> 
> Ah :) Bit of a pickle.
> 
> I guess I'd do something like
> 
> \def:Npn \siunitxtmp {
>   \tlp_gset:Nx \g_siunitx_tmpa_tlp {\etex_scantokens:D {#1}}}
> \char_make_active:N \_
> \siunitxtmp
> 
> (unless my brain hasn't woken up yet...I think that will work)
> 
Seems to agree with what I'd thought.  I just wondered if I was missing
some kind of trick to avoid needing a user-space named macro.
-- 
Joseph Wright