Choice of processor

[Paulo Ney de Souza]

Hi Ulrike,

Thanks for the tip on \DocumentMetadata{}, it does indeed speeds
things up quite a bit, I wish I would understand what is it doing ...

I do believe that all my examples will be working in LuaTeX soon. I had
been working diligently with Herbert Voss over the December timeframe
and then I lost my house in the Pasadena fire on the 7th of January and
things are a bit backed up. Most of the problems are with shading and
transparency and he has nailed it to a couple of pst-packages and has
already produced a number of patches.

Paulo Ney



On Wed, Mar 5, 2025 at 2:19 AM Ulrike Fischer <news3 at nililand.de> wrote:

> Am Tue, 4 Mar 2025 14:56:45 -0800 schrieb Paulo Ney de Souza:
>
> > One can add a few things to the list:
> >
> >  * Some packages are not fully implemented in LuaTeX yet, examples:
> > pstricks and microtype
>
> The question was about transition from xelatex to lualatex and the
> microtype support of lualatex is much better than for xelatex.
> (And I never saw a concrete question about something missing, e.g.
> "manual expansion" is not something a normal user would ever want to
> do).
>
> pstricks works quite nicely in luatex now.  I know that not
> everything works yet in luapstricks, but on the other side xelatex
> fails on some complicated stuff too.
>
> >  * There is no metric compatibility with the other engines
>
> No but xelatex is not metric compatible with pdftex either.
>
> >  * It is much slower than the other engines on average
>
> Depends. If you compile e.g. the pstricks example from
> https://tex.stackexchange.com/q/614129 (for best result as
> \DocumentMetadata{} before loading the class) then you can see that
> lualatex is **much** faster than xelatex here (and faster than a
> latex+dvips+ps2pdf round).
>
> --
> Ulrike Fischer
> http://www.troubleshooting-tex.de/
>
>
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