[luatex] LuaTeX precompilation

[Axel Kittenberger]

>
>
> I don't consider these ipsum test real tests.


I tested it with a variety of real documents, I can redo the tests if you
want, but altogether, it was slower, albeit of course it is debatable what
is considered ignorable, but my result was, due to this I'm not going to
use it as default compiler and IMO we should not kid ourselves it is in
fact a reason that hinders general adoption (unless a specific use
case absolutely needs a new future, higher limits etc.).

The "ipsum test" wasn't to show how slow lualatex is.. i know it isn't
real, it was for me the approach to create a minimal document to see what
can be improved, naively if no part is slower the sum must be faster. But
like said, the notion here is there is no issue.. so I stopped pushing that.

just use what works best (pdftex will be around for ages); i assume
> latex will become faster over time so maybe in a few years your users
> won't notice a move to luatex
>

If both would get under the human perception limit for "as good as instant"
I agree, which is 100ms, then no one would care about 10ms vs 100ms, unless
that, it's the faster option unless specific needs arise, albeit it would
really be beneficially to have the same default compiler due to details, or
having packages depend on Lua features for convenience than necessity.

- Axel
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