Simon Kramer simon.kramer at bluewin.ch
Mon May 10 15:16:09 CEST 2021

Hi Karl

	Thank you very much for your
	informative and prompt answer.

	Indeed, my latex-fractal now compiles without
	problems in luatex - even with deeper recursion.

	(Is pdftex to be deprecated and replaced by luatex?
	 xetex seems to suffer also from capacity limits.)

Thanks again and best regards,

	-- Simon

> On 10 May 2021, at 00:20, Karl Berry <karl at freefriends.org> wrote:
> Hi Simon,
>            May I ask whether there is a deeper reason why TEX-capacity can
> Knuth's original archiTeXture has hardwired limits, yes. I tried to
> document some of them in texmf.cnf (decades ago), although I admit the
> comments may not be 100% correct any more.
> Some of the values you wrote don't seem like the absolute maximums to
> me.  You can check the sup_* values in the tex.ch source file, e.g.,
> sup_pool_size is 40000000.  Some of those sup_ values are themselves not
> maximized. If you don't have a source tree around, it's online at
> http://tug.org/svn/texlive/trunk/Build/source/texk/web2c/tex.ch?view=log&pathrev=55857
> I seem to recall that luatex relaxes some of these limits. You might
> want to try that. And/or program your fractal in Lua in the first place
> and avoid all these crazy limits.
> I'll reply to your font question separately. -k

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