[varlog]

    static Q_DECL_CONSTEXPR inline bool isSpace(uint ucs4) Q_DECL_NOTHROW Q_DECL_CONST_FUNCTION
    {
        // note that [0x09..0x0d] + 0x85 are exceptional Cc-s and must be handled explicitly
        return ucs4 == 0x20 || (ucs4 <= 0x0d && ucs4 >= 0x09)
                || (ucs4 > 127 && (ucs4 == 0x85 || ucs4 == 0xa0 || QChar::isSpace_helper(ucs4)));
}

and

bool QT_FASTCALL QChar::isSpace_helper(uint ucs4) Q_DECL_NOTHROW
	{
	    if (ucs4 > LastValidCodePoint)
	        return false;
	    const int test = FLAG(Separator_Space) |
	                     FLAG(Separator_Line) |
	                     FLAG(Separator_Paragraph);
	    return FLAG(qGetProp(ucs4)->category) & test;
	}

The ones I want are there, I would not expect the rest of them inside < tag >, which is where I use it. Where is the catch?