Bumping the bundled Unicode version currently means editing two kinds of place:
unicodeVersionDir in tools/internal/ucd/ucd.go — the directory the generators read.- The hard-coded human-readable version strings emitted into the generated headers:
unicodeVersion in tools/internal/codegen/idna_mapping.go, and the Unicode 17.0 / 17.0.0 literals in idna_validity.go and nfc_tables.go.
docs/idna-unicode-update.md documents a grep step to catch the literals, but they can drift out of sync with the directory pin. Expose the version from a single source of truth — for example, parse it from a UCD file header, or derive it from unicodeVersionDir — and have every generator consume it, so a version bump is a one-line change.
Follow-up to #17.
Bumping the bundled Unicode version currently means editing two kinds of place:
unicodeVersionDirintools/internal/ucd/ucd.go— the directory the generators read.unicodeVersionintools/internal/codegen/idna_mapping.go, and theUnicode 17.0/17.0.0literals inidna_validity.goandnfc_tables.go.docs/idna-unicode-update.mddocuments a grep step to catch the literals, but they can drift out of sync with the directory pin. Expose the version from a single source of truth — for example, parse it from a UCD file header, or derive it fromunicodeVersionDir— and have every generator consume it, so a version bump is a one-line change.Follow-up to #17.