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ad28de4f14
This commit fixes quite a few odd things in regex code: * Lack of encapsulation. * Non-method functions for matching without retrieving all groups. * Regex class being copyable without proper copy-constructor (potential UAF and double free due to pointer members m_pc and m_pce). * Redundant SMatch::m_length, which always equals to match.size() anyway. * Weird SMatch::size_ member which is initialized only by one of the three matching functions, and equals to the return value of that function anyways. * Several places in code having std::string value instead of reference.