Like pango_font_description_merge(), but only a shallow copy is made
of the family name and other allocated fields. desc can only be
used until desc_to_merge is modified or freed. This is meant
to be used when the merged font description is only needed temporarily.
Like pango_font_description_merge(), but only a shallow copy is made of the family name and other allocated fields. desc can only be used until desc_to_merge is modified or freed. This is meant to be used when the merged font description is only needed temporarily.