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Always prefer breaking at word boundaries
An overlong word containing a hyphen could be broken anywhere, instead of after the hyphen. Example: compare the line breaking of aaaaa-aaaaa-aaaaa-aaaaa with aaa aaaaa-aaaaa-aaaaa-aaaaa (with a very narrow window) This also improves Chinese text in some situations (#10299)
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@ -303,7 +303,8 @@ bool GuiFontMetrics::breakAt(docstring & s, int & x, bool const rtl, bool const
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tl.setText(qs);
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tl.setFont(font_);
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QTextOption to;
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to.setWrapMode(force ? QTextOption::WrapAnywhere : QTextOption::WordWrap);
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to.setWrapMode(force ? QTextOption::WrapAtWordBoundaryOrAnywhere
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: QTextOption::WordWrap);
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tl.setTextOption(to);
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tl.beginLayout();
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QTextLine line = tl.createLine();
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