Both user-approved drafts from the G-041 prework probe findings:
- G-071: value-allocation correctness for optional standalone values +
trailing optional-member clauses (the lseq "0 10 2" in-form failure),
error-blame quality, and parse_status -form support. A G-041
prerequisite: no lseq form accepts those arglists under the current
allocator, so form auto-selection alone cannot fix them.
- G-072: named compound clause types with per-alternate element typing
and arity for heterogeneous repeating clauses (try on/trap handlers),
building on the design sketches embedded in the ::try moduledoc notes.
Includes a recorded examination of Elixir gradual set-theoretic types
(user direction): punk::args -type | and literal() are already a
fragment of the set algebra; negation would subsume reserved-word
deny-lists; per-alternate arity falls out of union-of-shapes.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble