Combine this ufansi.Attrs with other ufansi.Attrss, returning one
which when applied is equivalent to applying this one and then the other
one in series.
Which bits of the Str.State integer these Attrs will
set to 1
when it is applied
Which bits of the Str.State integer these Attrs will override when it is applied
Apply these Attrs to the given ufansi.Str, making it take effect across the entire length of that string.
Apply the current Attrs to the Str.State integer, modifying it to represent the state after all changes have taken effect
Represents one or more ufansi.Attrs, that can be passed around as a set or combined with other sets of ufansi.Attrs.
Note that a single Attr is a subclass of Attrs. If you want to know if this contains multiple Attrs, you should check for Attrs.Multiple.