\newminted defines its environment, and minted stays emulated

[tannevaled]

minted's \newminted{lang}{opts} is how a paper gets a code environment of its own —
\newminted{jl}{…} defines jlcode — and the engine had no such command. A paper
that ships minted.sty therefore got the real package, whose environments are
built through fancyvrb's capture: their bodies reached the page as tokens with
the ordinary category codes, so a lone $ in a code line opened maths and the scan
ran past the environment's own \end, eating the rest of the document.

That is #225, and this closes it. 2405.10478 writes \newminted{jl}{…} and then 28
jlcode blocks, exactly one of which holds

path = "$write_dir/therm_comp_MPI/"

2405.10478	pages	drawn glyphs	share of the reference
before	15	36 152	0.48
after	24	69 606	0.93
tectonic	27	75 018 characters	—

What changed

minted joins the packages the engine does not load for real, beside listings.
Its own implementation is minted's draft-mode behaviour — verbatim, no Pygments,
no shell escape — and it now covers \newminted, \newmintinline and \newmint.
The derived environment takes the language's name plus code, or the optional
argument when the paper names it (\newminted[julia]{jl}{…}).

Measured over the 157 arXiv papers with a tectonic reference

	before	after
page error	516	493
exact	24	26
within 1 page	66	68
within 2 pages	103	105

Three tests: the derived environment and its lone $, the optional name, and the
inline sibling.

Closes #225.

🤖 Generated with Claude Code