[hyena] [Hyena.Gui] Add FormatEscaped extension method

[Gabriel Burt <gburt src gnome org>]

commit db644786b7424823b37d01410da8c60b102980d5
Author: Gabriel Burt <gabriel burt gmail com>
Date:   Wed Oct 13 15:29:30 2010 -0500

    [Hyena.Gui] Add FormatEscaped extension method

 Hyena.Gui/Hyena.Gui/PangoExtensions.cs |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/Hyena.Gui/Hyena.Gui/PangoExtensions.cs b/Hyena.Gui/Hyena.Gui/PangoExtensions.cs
index e593a50..9a7bcc1 100644
--- a/Hyena.Gui/Hyena.Gui/PangoExtensions.cs
+++ b/Hyena.Gui/Hyena.Gui/PangoExtensions.cs
@@ -26,6 +26,8 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Linq;
+
 using Pango;
 
 namespace Hyena.Gui
@@ -43,5 +45,10 @@ namespace Hyena.Gui
                 return ((int)(metrics.Ascent + metrics.Descent) + 512) >> 10; // PANGO_PIXELS (d)
             }
         }
+
+        public static string FormatEscaped (this string format, params object [] args)
+        {
+            return String.Format (format, args.Select (a => GLib.Markup.EscapeText (a.ToString ())).ToArray ());
+        }
     }
 }