const golang.org/x/text/unicode/bidi.bpOpen

4 uses

	golang.org/x/text/unicode/bidi (current package)
		bidi.go#L113: 			p.pairTypes = append(p.pairTypes, bpOpen)
		bracket.go#L45: 	bpOpen
		bracket.go#L146: 		case bpOpen:
		core.go#L1055: 		case bpNone, bpOpen, bpClose:

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)