[Dev-luatex] [luatex] tex.extraprimitives() and Umath primitives

Khaled Hosny khaledhosny at eglug.org
Mon Jan 21 14:38:23 CET 2013

On Mon, Jan 21, 2013 at 10:01:55AM +0100, Taco Hoekwater wrote:
> On 01/19/2013 06:00 PM, Khaled Hosny wrote:
> >On Wed, Jan 09, 2013 at 05:23:02PM +0100, Taco Hoekwater wrote:
> >>On 01/09/2013 03:37 PM, Khaled Hosny wrote:
> >>>Hi all,
> >>>
> >>>Is there a way for tex.extraprimitives() to return only Unicode math
> >>>primitives? I think not, but I thought to ask anyway.
> >>
> >>No, sorry.
> >
> >OK, what about the attached patch?
> Not sure. I am thinking perhaps it would be better if 'Umath' was
> still also included in 'luatex', and technically that would be simple
> by or-ing the options.

That makes more sense, so I did that and committed the patch.

> It would mean that lualatex would have some 80+ extra primitives
> (\luatexUmath ... + \Umath...) which may be undesirable to some
> people, but that also might help backward compatibility so I guess
> that makes it a tie.

I think the backward compatibility is a plus. TeX Live’s luatex.ini
duplicates the primitives already once prefixed and once not (but
lualatex.ini does not, and it is where the new functionality would be


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