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diff --git a/src/gtkutil.c b/src/gtkutil.c
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index 44f828c..d434a48 100644
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--- a/src/gtkutil.c
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+++ b/src/gtkutil.c
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@@ -784,6 +784,14 @@ xg_hide_tooltip (FRAME_PTR f)
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     General functions for creating widgets, resizing, events, e.t.c.
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  ***********************************************************************/
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+static void
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+my_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
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+                        const gchar *msg, gpointer user_data)
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+{
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+    if (!strstr (msg, "visible children"))
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+        fprintf (stderr, "XX %s-WARNING **: %s\n", log_domain, msg);
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+}
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+
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 /* Make a geometry string and pass that to GTK.  It seems this is the
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    only way to get geometry position right if the user explicitly
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    asked for a position when starting Emacs.
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@@ -799,6 +807,7 @@ xg_set_geometry (FRAME_PTR f)
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       int top = f->top_pos;
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       int yneg = f->size_hint_flags & YNegative;
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       char geom_str[sizeof "=x--" + 4 * INT_STRLEN_BOUND (int)];
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+      guint id;
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       if (xneg)
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         left = -left;
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@@ -811,9 +820,15 @@ xg_set_geometry (FRAME_PTR f)
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                (xneg ? '-' : '+'), left,
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                (yneg ? '-' : '+'), top);
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+      /* Silence warning about visible children.  */
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+      id = g_log_set_handler ("Gtk", G_LOG_LEVEL_WARNING | G_LOG_FLAG_FATAL
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+                              | G_LOG_FLAG_RECURSION, my_log_handler, NULL);
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+
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       if (!gtk_window_parse_geometry (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)),
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                                       geom_str))
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         fprintf (stderr, "Failed to parse: '%s'\n", geom_str);
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+
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+      g_log_remove_handler ("Gtk", id);
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     }
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 }
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