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  1. Qt
  2. QTBUG-62011

QString::fromUcs4() eats ZERO WIDTH NO-BREAK SPACE

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    • 1c0b69eac521fec074390c023be8b5a23e88dd50 (qt/qtbase/5.14)

      QString::fromUcs4() internally calls Utf32::convertToUnicode(), which defaults to detect endianess from the data (which eats leading BOM).

      But QString::fromUcs4() always uses the machine endianess, so no header parsing is needed.

      I suggest to call it with QTextCodec::IgnoreHeader flag set.

      Test case:

      uint chr = 0xFEFF;
      qDebug << QString::fromUcs4(&chr, 1).toUtf8();

      shows an empty QByteArray.

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            Eddy Edward Welbourne
            cfeck Christoph Feck
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