如何在flutter中添加'，[]正则表达式特殊字符

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final String text = "Hello, [World]!";

    // 使用正则表达式匹配特殊字符
    final RegExp regex = RegExp(r"\'|\[|\]");
    final List<String> matches = regex.allMatches(text).map((m) => m.group(0)).toList();

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Regex Demo'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text(
                'Original Text:',
                style: TextStyle(fontSize: 18),
              ),
              Text(
                text,
                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
              ),
              SizedBox(height: 20),
              Text(
                'Matches:',
                style: TextStyle(fontSize: 18),
              ),
              Text(
                matches.join(', '),
                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
              ),
            ],
          ),
        ),
      ),
    );
  }
}