## 12.1.0

### Minor Analysis Improvements

* Added an internal C++ regular-expression parse library and parse-tree view targeting the ECMAScript dialect, which is the default for `std::regex`. The new library lives in `semmle.code.cpp.regex` and implements the shared `RegexTreeViewSig` interface. No new queries are added in this release; the library provides the foundation for future C++ ReDoS analyses.