[luatex] \U*spacing and pointer

[Manuel Pégourié-Gonnard]

Le 19/05/2011 08:26, Taco Hoekwater a écrit :
> 
> 
> On 05/19/11 03:56, Manuel Pégourié-Gonnard wrote:
>> \newmuskip\testmuskip
>> \testmuskip=18mu
>> \thinmuskip=18mu
>>
>> \Umathopopspacing\textstyle=\testmuskip
>> \Umathordordspacing\textstyle=\thinmuskip
>> $11$\par % 18mu, ok
>> $++$\par % 18mu, ok
>>
>> \testmuskip=0mu
>> \thinmuskip=0mu
>> $11$\par % 0 mu ?!
>> $++$\par % 0 mu, ok
>>
>> \bye
>>
>> I would have expected a different result on the line marked '?!'.
> 
> You meant the other line, I think. Anyay, ++ deteriorates into
> Ord-Ord spacing following the texbook's Appendix G, so the
> \testmuskip is never used.
> 
> (and even if it did not, you should have used \Umathbinbinspacing
> as + is a Bin, not Op).
> 
Right I completely messed up. I should have gone to bed earlier and tried again
with a clear mind. Sorry for the noise.

Manuel.