the last safety net is that we can also configure a hard limit on the number of states, and you will hit that limit with an exception before running into an infinite loop. another possible safety net is to just bound the context distance: a(?=.{0,100}b) and not consider context after 100 characters.
For multiple readers
，更多细节参见体育直播
The document adds "modularization" as a slight level of indirection, which I'm reading with the meaning of grouping some things together and only providing an abstract interface for other modules to use.。wps下载对此有专业解读
聚焦全球优秀创业者，项目融资率接近97%，领跑行业