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Fix excessive combining marks causing GPU overload and rendering corruption #294

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Fix excessive combining marks causing GPU overload and rendering corruption #294

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7 changes: 5 additions & 2 deletions ui/text/text.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2011,8 +2011,11 @@ bool IsSpace(QChar ch) {
|| (ch == QChar::Tabulation);
}

bool IsDiacritic(QChar ch) { // diacritic and variation selectors
return (ch.category() == QChar::Mark_NonSpacing)
bool IsDiacritic(QChar ch) { // diacritic, combining and variation selectors
const auto category = ch.category();
return (category == QChar::Mark_NonSpacing)
|| (category == QChar::Mark_Enclosing)
|| (category == QChar::Mark_SpacingCombining)
|| (ch.unicode() == 1652)
|| (ch.unicode() >= 64606 && ch.unicode() <= 64611);
}
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