[LyX/master] Implement properly \limits and \nolimits

[Enrico Forestieri]

On Mon, Sep 07, 2020 at 12:43:35PM +0200, Jean-Marc Lasgouttes wrote:
> Le 07/09/2020 à 01:15, Scott Kostyshak a écrit :
> > I think this might have caused a change in LaTeX exported in some cases.
> > In the attached .lyx file, if you load with 2.3.x, it does not use the
> > package esint. But if you load with master, it does.
> > 
> > I think this is related to the following ticket:
> > 
> >    http://www.lyx.org/trac/ticket/9498
> 
> The following patch fixes the issue: \intop is declared as requiring either
> esint or amsmath. Enrico, does that sound OK to you? I am not sure of the
> reason why one wants one of these packages.

I am not sure, either. Strictly speaking, those package should be required
only when using multiple integrals or cyclic integrals.

> And if this is OK, I should do the same for iint, iiint and iiiint, right?

Yes, this fixes it, but also reveals another problem. If a macro appears
in the expansion of a \def, its requirements are also taken into account.
This is wrong, because the \def is only meant for on-screen representation
and not for output. So, the correct patch would be fixing this glitch.
This time you incurred in it, but I bet it will bite again.

-- 
Enrico