const vendor/golang.org/x/net/idna.indexShift
2 uses
vendor/golang.org/x/net/idna (current package)
trie.go#L12: index := int(c >> indexShift)
trieval.go#L45: indexShift = 3
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)