const regexp/syntax.opPseudo

6 uses

	regexp/syntax (current package)
		op_string.go#L30: 	_ = x[opPseudo-128]
		parse.go#L78: 	opLeftParen = opPseudo + iota
		parse.go#L423: 	if sub.Op >= opPseudo {
		parse.go#L482: 	for i > 0 && p.stack[i-1].Op < opPseudo {
		parse.go#L501: 	for i > 0 && p.stack[i-1].Op < opPseudo {
		regexp.go#L61: const opPseudo Op = 128 // where pseudo-ops start