Multiline colorize function needed

Right now, the colorize function can only process words that span in single line only. We need to come up with a solution to process strings that span across multiple lines:
- multi-line comments
- multi-line strings

首先在 JavaScript 编辑器代码中定位 colorize 函数，并跟踪它如何处理单行单词。检查现有测试或示例是否涵盖注释和字符串，然后将完成标准定义为：能够正确地为多行注释和多行字符串着色，同时不破坏单行情况。

由索引模型根据 Issue 内容生成。