Select root folder in GtkfileChooser

[Pierre Wieser <pwieser trychlos org>]

Hi

In Nautilus-Actions, I need to let my users select folders, including
root folder ('/').

In a GtkFileChooserDialog, there is obviously no way to select the root
folder by clicking on it, because it has no parent.

But when I enter "/" in the location entry, and click on Open button,
I get the message:
"The folder could not be created
 Error creating directory: File exists."

Sample code to reproduce this is below:

        GtkWidget *dialog;
        gchar *path;

        dialog = gtk_file_chooser_dialog_new( _( "Select a folder" ),
                        NULL,
                        GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
                        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                        GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
                        NULL );

        gtk_file_chooser_set_filename( GTK_FILE_CHOOSER( dialog ), "/" );

        if( gtk_dialog_run( GTK_DIALOG( dialog )) == GTK_RESPONSE_ACCEPT ){
                path = gtk_file_chooser_get_filename( GTK_FILE_CHOOSER( dialog ));
                g_debug( "nact_ifolders_tab_on_add_folder_clicked: path=%s", path );
                g_free( path );
        }

        gtk_widget_destroy( dialog );

Is this a bug (and so I should open it Bugzilla) ?
Or is there something missing in my code ?

Thanks in advance for your help.
Regards
Pierre