pub unsafe extern "C" fn gtk_text_iter_backward_find_char(
iter: *mut GtkTextIter,
pred: GtkTextCharPredicate,
user_data: gpointer,
limit: *const GtkTextIter,
) -> gboolean
pub unsafe extern "C" fn gtk_text_iter_backward_find_char(
iter: *mut GtkTextIter,
pred: GtkTextCharPredicate,
user_data: gpointer,
limit: *const GtkTextIter,
) -> gboolean