const regexp/syntax.OpQuest

12 uses

	regexp/syntax (current package)
		compile.go#L136: 	case OpQuest:
		op_string.go#L26: 	_ = x[OpQuest-16]
		parse.go#L225: 	case OpPlus, OpQuest:
		parse.go#L984: 				op = OpQuest
		regexp.go#L55: 	OpQuest                        // matches Sub[0] zero or one times
		regexp.go#L84: 	case OpStar, OpPlus, OpQuest:
		regexp.go#L180: 	case OpCapture, OpStar, OpPlus, OpQuest, OpRepeat:
		regexp.go#L337: 	case OpStar, OpPlus, OpQuest, OpRepeat:
		regexp.go#L350: 		case OpQuest:
		simplify.go#L37: 	case OpStar, OpPlus, OpQuest:
		simplify.go#L96: 			suffix := simplify1(OpQuest, re.Flags, sub, nil)
		simplify.go#L100: 				suffix = simplify1(OpQuest, re.Flags, nre2, nil)

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