Human design ruling (2026-07-04, review of PR #22): an empty fraction is INVALID — decimalStringTofixedPoint("1.") currently parses as 1e18 but must revert with ParseDecimalInvalidString. A trailing point with no fractional digits is a malformed literal, not UX generosity.
Fix: reject in LibFixedPointDecimalParse (the decimal-point gate must require at least one digit after the point), update/extend tests to pin the revert with the exact selector, and sweep for any existing test or fixture that relies on the permissive acceptance.
Category note: check sibling decimal parsers (rain.math.float string parse, rainlang literal parsing) for the same acceptance — the ruling is about the FORM, so any parser in the org accepting a bare trailing point has the same bug.
🤖 Generated with Claude Code
Human design ruling (2026-07-04, review of PR #22): an empty fraction is INVALID —
decimalStringTofixedPoint("1.")currently parses as 1e18 but must revert withParseDecimalInvalidString. A trailing point with no fractional digits is a malformed literal, not UX generosity.Fix: reject in
LibFixedPointDecimalParse(the decimal-point gate must require at least one digit after the point), update/extend tests to pin the revert with the exact selector, and sweep for any existing test or fixture that relies on the permissive acceptance.Category note: check sibling decimal parsers (rain.math.float string parse, rainlang literal parsing) for the same acceptance — the ruling is about the FORM, so any parser in the org accepting a bare trailing point has the same bug.
🤖 Generated with Claude Code