const regexp/syntax.EmptyWordBoundary

5 uses

	regexp/syntax (current package)
		compile.go#L124: 		return c.empty(EmptyWordBoundary)
		prog.go#L70: 	EmptyWordBoundary
		prog.go#L100: 		op ^= (EmptyWordBoundary | EmptyNoWordBoundary)
		prog.go#L274: 	case EmptyWordBoundary:

	regexp
		exec.go#L165: 		op &^= syntax.EmptyWordBoundary