Two EPS import tests become programs written from the PostScript Language
Reference (3rd ed.), with their own names and structure, covering the
interpreter features the importer relies on:
- `level_2_and_3_probes_read_as_vectors`: a resource category made from
Generic, resources defined and found in it (§3.9), local and global VM
(`currentglobal`, `setglobal`, `gcheck`, §3.7.2), `internaldict` probed
through `stopped`, a halftone dictionary set and restored, `cachestatus`,
`rootfont` and `currentcolorrendering`, drawing with its own procedures.
- `executable_strings_and_integer_keys`: shading dictionaries closed by an
executable string (`(>>) cvx`, or a Level 1 builder with `counttomark`),
procedures kept under integer keys run with `load` through `stopped`,
`cvx`/`cvlit`/`xcheck` on strings.
Each was mutation-checked: making any of findresource, defineresource,
currentglobal, setglobal, gcheck, internaldict, sethalftone,
currenthalftone, currentcolorrendering, cachestatus, rootfont, stopped,
cvx, load, counttomark, cvlit or xcheck unknown fails a test, and so do
strings that `cvx` leaves literal, `load` refusing integer keys and
`gcheck` answering true.
The ROADMAP's EPS paragraph, file-formats row and last-updated line state
the PostScript features the reader supports; the legacy `.ai` comments in
the import module and the interpreter cite that format's published
specification (PRONOM fmt/423) for the `%AI` header comments and `u`/`U`
group operators the reader keys on.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
eb255ef379