[XeTeX] additional beginL endL nodes in math

[Khaled Hosny]

I’m testing a change that removes the direction node from around inline
math and instead (ab)uses the presence of \math(on|off) node to output the
necessary dvi opcode, and it seems to fix this issue as well. Lets hope
that there is no some blackmagic^W deep
TeX hackery that plays with the this node as well.

On Thu, Apr 16, 2015 at 12:47 PM, David Carlisle <d.p.carlisle at gmail.com>
wrote:

> To see a non contrived example where the change breaks existing
> documents, take this example
> (using a math expression from the breqn package documentation)
>
> \documentclass[]{article}
>
>
> \usepackage{breqn}
>
> \begin{document}
>
> aaaaaaaaaaaaaaaaaaa
> \begin{dmath*}
>     g = 0 + 1 - 1
> \end{dmath*}
>
> aaaaaaaaaaaaaaa
> \begin{dmath*}
> T(n) \hiderel{\leq} T(2^{\lceil\lg n\rceil})
>   \leq c(3^{\lceil\lg n\rceil}
>     -2^{\lceil\lg n\rceil})
>   <3c\cdot3^{\lg n}
>   =3c\,n^{\lg3}
> \end{dmath*}.
>
>
>
>
> \end{document}
>
>
>
>
>
>
> I attach the output from xelatex 2014 and 2015,
> basically breqn doesn't work with xelatex 2015.
>
>
> I haven't fully traced it but I suspect (since math lists are opaque now)
> that this is not fixable by changing macro code.
>
> David
>
>
>
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