Go's authorkey reads its strings and the lines of a key file with
strings.ToLower, strings.ToUpper and strings.TrimSpace, whose results
depend on the package unicode of Go 1.26.8, Unicode 15.0.0: neither the
case mapping of the platform nor the tables of the path rules give the
same. lib/src/go_unicode.dart holds the three sets as runs of code points,
written by tool/go_unicode_tables.go, which scans every code point,
checks the runs against the functions of Go and checks that strings.Map
changes a string exactly when one of its runes changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
