combinator fixed

    std::vector<std::string> splitCombinatorChain(const std::string &selector) {

        std::vector<std::string> parts;

        std::string cur;

        int bracketDepth = 0;

        for (char c : selector) {

            if (c == ' ' || c == '\t' || c == '\n' || c == '\r' ||

                c == '>' || c == '+' || c == '~') {

            if (c == '[') ++bracketDepth;

            else if (c == ']' && bracketDepth > 0) --bracketDepth;

            // Inside "[...]", '~' (and '+'/'>') are attribute-operator

            // characters (e.g. "[rel~=external]"), not combinators -- only

            // split on them outside of brackets, same bracket-awareness

            // stripAttributeSelectors already needs for its own scan.

            bool isCombinatorChar = (c == '>' || c == '+' || c == '~') && bracketDepth == 0;

            if (c == ' ' || c == '\t' || c == '\n' || c == '\r' || isCombinatorChar) {

                if (!cur.empty()) { parts.push_back(cur); cur.clear(); }

            } else {

                cur += c;