Root cause: get_dict_can_assign_value blanket-satisfied the member check
for any argument carrying choices, so an optional restricted-choice value
(the lseq '..'/'to' noise word) consumed any word whenever arity
permitted, starving later elements/clauses and failing validation with a
confusing trailing-choices error ('lseq 0 10 2' shape).
Fix: an allocation choice screen using choiceword_match (the shared G-040
implementation - exact/alias/prefix/nocase semantics; -choicemultiple
words screened per list member within min/max), applied only where
allocation has an alternative: -optional arguments and further
occurrences of -multiple arguments. Required arguments are deliberately
not screened - the word must fill them and validation's choiceviolation
reporting stays informative (the existing parsestatus/cmdhelp/choices
pins forced and now document both refinements). -choicerestricted 0
behaviour unchanged.
Results: the allocation.test GAPs flipped ('1 2 3' and '1 2 by 3' parse
with correct clause shapes {{} 3}/{by 3}; '1 2 3 4' gets the plain
excess-values rejection instead of blaming the unrelated optional);
prefix normalization survives the screen; all noise-word variants and
if-shape guards unchanged. lseq moduledoc matrix parses per lseq.n under
-form range, and 'i lseq 0 10 2' works end-to-end. Remaining lseq
divergences trace to G-041 form selection or the -type expr laxity
recorded in G-055 - not allocation.
Also corrected an increment-1 mis-premise: parse_status ALREADY accepts
-form before the withid/withdef tail per its documented synopsis - the
probe had passed it trailing. GAP replaced by
parsestatus_form_option_order (correct-order acceptance incl. the form
key, trailing rejection). No code change was needed for that acceptance
clause.
Verification: punk::args suite 193 pass / 1 pre-existing skip / 0 fail;
punk::ns 53/53; full source-tree suite 813 pass / 13 skip / 1 fail =
exec-14.3 only (known baseline) - zero regressions (tclsh 9.0.3; lseq
verification in punk902z src, Tcl 9.0.2).
Flip edits: G-071 index entry moved to GOALS-archive.md (achieved
2026-07-12), detail Status flipped with the acceptance review and
before/after record; reference sweep updates G-041 (prerequisite fixed,
parse_status correction) and G-072 Notes. The detail-file move to
goals/archive/ follows as a pure rename; goals_lint transiently unclean
between the two commits.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
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