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Add support for regex flag to toggle dot-matches-newline
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@ -156,7 +156,9 @@ Some modifiers can control the matching behavior of the atoms following
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them:
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* `(?i)` enables case-insensitive matching
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* `(?I)` disables case-insensitive matching
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* `(?I)` disables case-insensitive matching (default)
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* `(?s)` enables dot-matches-newline (default)
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* `(?S)` disables dot-matches-newline
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== Quoting
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@ -201,12 +201,21 @@ private:
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auto it = m_pos.base();
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if (m_regex.end() - it >= 4 and *it++ == '(' and *it++ == '?')
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{
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auto m = *it++;
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if ((m != 'i' and m != 'I') or *it++ != ')')
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return false;
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m_ignore_case = (m == 'i');
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m_pos = Iterator{it, m_regex};
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return true;
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while (true)
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{
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auto m = *it++;
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if (m == 'i' or m == 'I')
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m_ignore_case = (m == 'i');
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else if (m == 's' or m == 'S')
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m_dot_maches_newline = (m == 's');
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else if (m == ')')
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{
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m_pos = Iterator{it, m_regex};
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return true;
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}
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else
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return false;
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}
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}
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return false;
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}
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@ -274,7 +283,19 @@ private:
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switch (const Codepoint cp = *m_pos)
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{
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case '.': ++m_pos; return new_node(ParsedRegex::AnyChar);
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case '.':
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++m_pos;
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if (m_dot_maches_newline)
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return new_node(ParsedRegex::AnyChar);
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else
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{
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CharacterClass c;
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c.negative = true;
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c.ranges.push_back({ '\n', '\n' });
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auto class_id = m_parsed_regex.character_classes.size();
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m_parsed_regex.character_classes.push_back(std::move(c));
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return new_node(ParsedRegex::Class, class_id);
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}
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case '(':
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{
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auto captures = [this, it = (++m_pos).base()]() mutable {
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@ -594,6 +615,7 @@ private:
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StringView m_regex;
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Iterator m_pos;
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bool m_ignore_case = false;
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bool m_dot_maches_newline = true;
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static constexpr struct CharacterClassEscape {
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Codepoint cp;
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