On 07/06/2017 11:21, Joseph Wright wrote:
> On 07/06/2017 11:14, Alexander Grahn wrote:
>> Good afternoon,
>> the recent version change of expl3 from [2017/04/01] (last TL-16 state) to
>> [2017/05/13] (initial TL-17 state) changed the behaviour of \hbox_s:Nn, which
>> made a hot-fix necessary for one of my packages (ocgx2) on CTAN.
>> The problem boils down to the following code, which used to work with expl3 as
>> of v. 2017/04/01, but fails now with `! Missing } inserted.' error.
>> \hbox_set:Nn0\bgroup CTAN % broken since expl3 [2017/05/13]
>> % \setbox0=\hbox\bgroup CTAN % hot-fix
>> I would like to return to using \hbox_set:Nn instead of \setbox.
> Hi Alexander,
> I had an issue in siunitx which I also had to fix for this update: for
> me it boiled down to having made some implementation assumptions and
> ending up mixing different interfaces.
Indeed, I've found I had a few more of these which I need to fix! It's
easy enough to assume primitive behaviour but really not a great plan: I
think in my own case the code goes back to before I joined the team (and
was feeling my way through the TeX <-> expl3 situation).