7bb366e836
* test(#4130): failing-first regressions for --context flag + parseDecisions hardening Block A (flag): check decision-coverage-plan --context <path> must route identically to the positional form; flag wins over positional context; valueless --context falls through to the #2770 fail-closed caller error; verify keeps its positional surface (flag is plan-only). RED on base: the flag token lands in the args[2] phase slot (false uncovered) or the args[3] context slot (silent CONTEXT.md-missing skip). Block B (hardening): regex-lattice asserts pin the atomic-ID wrapper (?=(X))\1 and the em-dash first-separator narrowing [^*—–]*[—–] plus the no-adjacent-overlap property; a differential property compares the module against a frozen copy of the pre-hardening grammars (reference validated against the base build: 60k generated lines, 0 mismatches); 40k cliff shapes assert correct outcomes with no wall-time asserts (repo rule). A12: partitionPredicateArgs keeps one parser behind parsePredicateFlags. * fix(#4130): --context flag for check decision-coverage-plan + quadratic-backtracking hardening in parseDecisions (A) check decision-coverage-plan --context <path> — sibling convention (check predicate, #2008): --flag value pairs parsed by the new shared partitionPredicateArgs (parsePredicateFlags reimplemented as its flags half — one parser, cannot diverge), the flag winning over a same-purpose positional, positionals kept (no sibling deprecates them; the plan-phase workflow caller passes positionals), valueless --context falls through to the #2770 fail-closed caller error. Repair of the routing accident where --context landed in the args[2] phase slot (false uncovered) or the literal token in the args[3] context slot (silent green skip). (B) parseDecisions regex seam hardened, byte-identical on all legal inputs: the three bullet grammars consume the ID atomically via the (?=(X))\1 lookahead emulation (kills the tail/[^:*]* O(n^2) re-split, ~1.1s @ 40k), and the em-dash first separator narrows [^*]*[—–] to [^*—–]*[—–] (kills the dash-position O(n^2) retry, ~1.7s @ 40k). Group indices unchanged (handlers untouched). Pinned by regex-lattice tests, a differential fast-check property vs the frozen pre-hardening grammars, and 40k cliff/legal-shape outcome tests (no wall-time asserts per repo rule — no deterministic engine step counter exists in Node). * docs+test(#4130): document --context invocation; harden lattice test tooling - docs/CONFIGURATION.md Decision Coverage Gates: new 'Invoking the plan gate directly' block documenting both the positional and --context forms, flag precedence, and the valueless-flag fail-closed semantics (same place the gate's behavior is documented; sibling check predicate documents its flags the same way). - Two changeset fragments per the maintainer brief (Added: flag; Fixed: hardening), PR numbers to be backfilled. - tests/decisions.test.cjs review fixes: readRegExpTemplate template escaping (bare ')' SyntaxError), range-aware lattice checker with backreference skip and template unescape, honest A1 contract, lint escape warning. * fix(#4130): valueless --context fails closed per #2770; A8 isolates flag-vs-positional context Suite-caught fixes from the first verify run: - cmdDecisionCoveragePlan now refuses a flag-shaped token as the positional context path: a bare valueless --context stays a positional (sibling parser semantics, unchanged) but reading it as a PATH would turn a caller mistake into a silent 'CONTEXT.md missing' green skip — exactly what #2770's fail-closed law forbids. Now falls through to the missing-context-argument error, as documented. - A8 test compares decoy-positional+flag against flag-with-phase (phase held constant) so the row isolates WHICH context was read; the old form compared against a no-phase invocation that could never match. * chore(#4130): backfill PR number in changeset fragments (PR #4374) --------- Co-authored-by: sim <sim@local>
164 B
164 B
type, pr
| type | pr |
|---|---|
| Fixed | 4374 |
parseDecisions no longer backtracks quadratically on pathological single bullets — output unchanged on all legal inputs. (#4130)