[glade/glade-3-36] Gtk plugin / GladeDataModel: ignore non printable chars

[Juan Pablo Ugarte <jpu src gnome org>]

commit ffa9c2fef824f36107be5c59c3d5719722aab171
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Thu Jul 9 17:51:21 2020 -0300

    Gtk plugin / GladeDataModel: ignore non printable chars
    
    Do not commit non printable characters for gchar and guchar column types.

 plugins/gtk+/glade-model-data.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/plugins/gtk+/glade-model-data.c b/plugins/gtk+/glade-model-data.c
index 26f66758..3296dad6 100644
--- a/plugins/gtk+/glade-model-data.c
+++ b/plugins/gtk+/glade-model-data.c
@@ -733,6 +733,9 @@ value_text_edited (GtkCellRendererText *cell,
       else
         val = *new_text;
 
+      if (!g_ascii_isprint (val))
+        return;
+
       value = g_new0 (GValue, 1);
       g_value_init (value, G_VALUE_TYPE (&data->value));