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2 changed files with 12 additions and 0 deletions
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@ -1315,6 +1315,12 @@ bool ECMA262Parser::parse_nonempty_class_ranges(Vector<CompareTypeAndValuePair>&
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if (match(TokenType::HyphenMinus)) {
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consume();
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if (match(TokenType::RightBracket)) {
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// Allow '-' as the last element in a charclass, even after an atom.
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m_parser_state.lexer.back(2); // -]
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m_parser_state.current_token = m_parser_state.lexer.next();
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goto read_as_single_atom;
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}
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auto second_atom = read_class_atom();
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if (!second_atom.has_value())
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return false;
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@ -1336,6 +1342,8 @@ bool ECMA262Parser::parse_nonempty_class_ranges(Vector<CompareTypeAndValuePair>&
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continue;
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}
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read_as_single_atom:;
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auto atom = first_atom.value();
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if (atom.is_character_class) {
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@ -485,6 +485,10 @@ TEST_CASE(ECMA262_parse)
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"^hel(?<LO>l\\w).$",
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"^[-a-zA-Z\\w\\s]+$",
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"\\bhello\\B",
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"^[\\w+/_-]+[=]{0,2}$", // #4189
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"^(?:[^<]*(<[\\w\\W]+>)[^>]*$|#([\\w\\-]*)$)", // #4189
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"\\/", // #4189
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"\\x", // Even invalid escapes are allowed if ~unicode.
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};
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for (auto& pattern : patterns) {
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