Philip Chimento authored Aug 26, 2023 and Christian Hergert committed Sep 22, 2023

The underlying GtkTextView has this capability, so we can expose an API
in GtkSourceSearchSettings to do this. The API is a property named
'visible-only' and a setter and getter function. The property defaults
to TRUE, giving the previously existing behaviour. If you set the
property to false, then search matches may include invisible text.

Closes: #51