Bug 56973 [Themes] FontRegistry.bestDataArray() chops off all but the first "good" font
M8 The font registry is not making use of the motif ability to have multiple FontData objects in a font because bestDataArray() is using only the first good font.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/FontFieldEditor.java
public Control getControl() {
            return text;
        }
        /**
         * Set the font to display with
         * @param fontData
         */
        public void setFont(FontData[] fontData) {
            if (font != null)
                font.dispose();
            font = new Font(text.getDisplay(), fontData);
            text.setFont(font);
        }
        /**
         * @return the preferred size of the previewer.
         */
        public int getPreferredExtent() {
            return 40;
        }
    }
    /**
     * Creates a new font field editor 
     */
    protected FontFieldEditor() {
    }
    /**
     * Creates a font field editor with an optional preview area.
     * 
     * @param name the name of the preference this field editor works on
     * @param labelText the label text of the field editor