On Sun, Jun 11, 2023 at 01:05:14PM +0200, Enrico Forestieri wrote: > > On Sun, Jun 11, 2023 at 04:30:34AM -0400, Scott Kostyshak wrote: > > > > Thanks, Enrico, I like it! I see two options, one nice and one not nice: > > > > 1. Do lyx2lyx. I think we would just need to copy the LyX box to the > > LaTeX box when the LaTeX box is empty. > > I don't think this is a good idea. The LyX representation may be different > from the TeX definition. The right lyx2lyx behavior should be simply > removing the macro definition if the TeX part is empty but not the LyX part. > One would loose the nice representation but everything still works.
Ah yes I think mixed up the cases. I was thinking of the behavior when
the TeX box is non-empty and the LyX box is empty.
> > 2. Commit the patch as is and claim it was a bug that LyX included the
> > definition even when the LaTeX box was empty. I did not check if the
> > current behavior is documented.
>
> It is not strictly a bug because one might want to simply remove the
> argument of the macro. The point is that in this case it is simpler to
> define the macro in the preamble (\def\name{}) rather than cluttering the
> main text. I bet nobody has ever defined a math macro with an empty
> definition in the body of the text. But even in this case the solution would
> be inserting "{}" in the definition rather than leaving it empty.
I see now.
> > I suppose (1) is the best? I wonder if some users rely on the current
> > behavior for the case where they want the LyX and LaTeX boxes to be the
> > same, because this way when they change the macro, they just need to
> > change it in one place (the LyX display), instead of needing to make
> > sure their LaTeX def and LyX def are in sync.
>
> Yes, (1) seems to be the best but because it guarantees backward
> compatibility (in the sense that exporting to older versions produces still
> working documents). However, no round-trip is possible, unless recording the
> macro definition in a TeX comment in the preamble and then restoring it when
> converting forward.
Sounds good.
Thanks,
Scott
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