Re: MathJax problem with \gdef

[Christopher Dimech]

> Sent: Thursday, November 12, 2020 at 1:15 PM
> From: "Patrice Dumas" <pertusus@free.fr>
> To: "Christopher Dimech" <dimech@gmx.com>
> Cc: "help-texinfo gnu" <help-texinfo@gnu.org>
> Subject: Re: MathJax problem with \gdef
>
> On Thu, Nov 12, 2020 at 11:57:47AM +0100, Christopher Dimech wrote:
> > Have done more tests with @tex, @math, and @displaymath.
> >
> > \gdef is working for pdf output but not with MathJax.
>
> I am not an expert in MathJax, but I think that MathJax only interpret
> the LaTeX/TeX locally, so cannot know about \Desig and will only
> interpret LaTeX/TeX "primary" commands.  Maybe there is a possibility to
> give some TeX/LaTeX code to MathJax?  In addition, when outputting html,
> @tex blocks are ignored.

Correct, at present we neglect @tex.  This requirement complicates the problem
because we cannot simply use @math and @displaymath.  Furthermore, @displaymath
only outputs one expression, whereas in @tex, one can have multiple $$math$$
constructs.


> I checked with latex2html and tex4ht.  The idea with latex2html and tex4ht
> is that there are intermediary files with the @tex, @math and
> @displaymath put in those files and then those files are run through
> latex2html or tex4ht and then the html fragment from each of the
> @-commands are put in the final output.  For latex2html the @tex and
> @math and @displaymath are all put in the same file, so it works (though
> I have not checked if the order is kept as in the input file).  For
> tex4ht the @tex, @math and @displaymath are each in a different file, so
> this does not work.  Maybe the code could be changed to handle that
> case and try to put everything in the same file using the order of the
> Texinfo file..
>
>
> >
> >
> > > Sent: Thursday, November 12, 2020 at 11:46 AM
> > > From: "Christopher Dimech" <dimech@gmx.com>
> > > To: "help-texinfo gnu" <help-texinfo@gnu.org>
> > > Subject: MathJax problem with \gdef
> > >
> > >
> > > Have noticed a problem with including \gdef names in @math,
> > > possibly introduced after the MathJax implementation. Defining
> > > \Desig and calling it from @math{} fails.  It also fails when
> > > doing output to pdf.
> > >
> > > @tex
> > >   \gdef\Desig{\buildrel \rm def \over \equiv}
> > > @end tex
> > >
> > > @math{\Desig}
> > >
> > >
> > >
> >
>