New punk::args::formcheck <id> ?-return dict|summary?: reports the form pairs
of a multiform definition that some argument list could cleanly match
simultaneously (the multipleformmatches inputs). Static pairwise pass over the
resolved FORMS enumerates each form's positional word-slot chains (leaders then
values; -optional and ?-wrapped clause-member branching; -multiple capped;
options excluded - order-free), screens aligned equal-length chains per
position (discriminator words via choiceword_match, type witnesses from a
small table), and CONFIRMS every candidate witness arglist with a real
single-form parse against both forms (parse_status - no raise, no
user-supplied words, no define/resolve cost). Findings are therefore witnessed
- discriminated form pairs cannot false-alarm; misses (exotic types,
option-requiring forms, enumeration caps) are the documented conservative
direction. Classes: type_weakness (discriminator aligned with a permissive
non-validating type - any/none/string/ansistring/globstring/expr/script) vs
structural (forms genuinely share an argument shape).
New @form key -overlapallowed <formname-list> sanctions a KNOWN overlap on
either pair member: the finding reports with sanctioned 1 and leaves the
result's unsanctioned list (the actionable/gate subset). Parse behaviour is
never affected; unknown form names are rejected at definition resolve
(end-of-forms cycle). @form directive doc updated.
tclcore moduledoc 0.3.4: the documented after cancelid/cancelscript overlap
(runtime-liveness ambiguity, 0.3.0 record) sanctioned on the cancelid form -
::after now reports zero unsanctioned findings while 'after cancel <id-shaped>'
still raises multipleformmatches. ::lseq deliberately unsanctioned: formcheck
reports range/start_count (witness {1 count 1}) AND range/count (witness
{1 by 1}) - both real, both rooted in the expr-typed end slot, kept visible
pending an expr syntax-validating type (G-069/G-070).
Tests: new args/formcheck.test (7) - no-finding cases (parse withid/withdef
pair, afterish/sharedform fixtures), class+sanction fixture, unknown-form
rejection, -return summary, ::lseq/::after pins with witnesses re-verified,
sanction parse-neutrality. punk::args suite 210/210, punk::ns 57/57.
G-074 achieved and archived (acceptance review in the detail file); G-055
verification gate gains the formcheck step (unsanctioned must be empty for
regenerated multiform commands).
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
