char* gtk_text_iter_get_visible_slice ( const GtkTextIter* start, const GtkTextIter* end )
Returns visible text in the given range.
gtk_text_iter_get_slice(), but invisible text
is not included. Invisible text is usually invisible because
GtkTextTag with the “invisible” attribute turned on has
been applied to it.
Iterator at end of range.
The data is owned by the caller of the function.