This function modifies the [class@Gtk.
TextTag] properties that are related to the Style properties. Other [[email protected]] properties are left untouched.
If this is non-null, applies this
to tag.
If this is null, the related *-set properties of [[email protected]] are set to false.
| this |
a Style to apply, or null. |
| tag |
a TextTag to apply styles to. |