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@@ -366,7 +366,7 @@ inline unsigned char to_lower(int c) {
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inline bool equal(const std::string &a, const std::string &b) {
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return a.size() == b.size() &&
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std::equal(a.begin(), a.end(), b.begin(),
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- [](char a, char b) { return to_lower(a) == to_lower(b); });
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+ [](char ca, char cb) { return to_lower(ca) == to_lower(cb); });
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}
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struct equal_to {
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