Summary: See PHI985. I think we pretty much need to start applying language-specific rules, but we can apply at least one more relatively language-agnostic rule: don't match lines which are indented 3+ levels. In C++, we may have symbols like this: ``` class X { public: int m() { ... } } ``` ..but I believe no mainstream language puts symbol definitions 3+ levels deep. Also clean up some of the tab handling very slightly. Test Plan: Tests pass, looked at some C++ code and got slightly better (but still not great) matches. Reviewers: amckinley Reviewed By: amckinley Differential Revision: https://secure.phabricator.com/D20479