[latex3-commits] [git/LaTeX3-latex3-latex3] main: Can't use \ifdefined here (1ac80a64d)

[Joseph Wright]

On 10/02/2022 21:59, Frank Mittelbach wrote:
> Am 10.02.22 um 21:23 schrieb PhelypeOleinik:
>>      Can't use \ifdefined here
>>      Non e-TeX engines don't see that as an \if primitive and lose 
>> track of \if...\fi balancing
> 
> do we really want try to make expl3 run on non e-TeX engines?
> 
> I would say no. No e-TeX bail out. Which engine that we try to support 
> is of that type?
> 
> I think it is too crippling on the whole if we don't require that.
> 
> Frank

The bootstrap code has aimed to stop gracefully if e-TeX is missing for 
a long time. Not sure there is a downside.

Joseph