[gtk/matthiasc/for-main: 1/4] Fix up font features demo

[Matthias Clasen <matthiasc src gnome org>]

commit 86dd72fad6cbea074be49c3feeb61606261b847a
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jul 2 22:46:27 2022 -0400

    Fix up font features demo
    
    The conversion to a textview was incomplete.

 demos/gtk-demo/font_features.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/demos/gtk-demo/font_features.c b/demos/gtk-demo/font_features.c
index 6b6ab79a33..3a5b50f1bb 100644
--- a/demos/gtk-demo/font_features.c
+++ b/demos/gtk-demo/font_features.c
@@ -1533,8 +1533,13 @@ font_features_toggle_edit (void)
 {
   if (strcmp (gtk_stack_get_visible_child_name (GTK_STACK (demo->stack)), "entry") != 0)
     {
+      GtkTextBuffer *buffer;
+      GtkTextIter start, end;
+
+      buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (demo->entry));
+      gtk_text_buffer_get_bounds (buffer, &start, &end);
       g_free (demo->text);
-      demo->text = g_strdup (gtk_editable_get_text (GTK_EDITABLE (demo->entry)));
+      demo->text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
       gtk_stack_set_visible_child_name (GTK_STACK (demo->stack), "entry");
       gtk_widget_grab_focus (demo->entry);
       gtk_adjustment_set_value (gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (demo->swin)), 0);