Sitecore Generic Shortcodes

I really enjoyed reading Sitecore Junkie's post about using Shortcodes in Sitecore. Here's an example of one I built for generic item shortcodes.

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using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; using Sitecore; using Sitecore.Data;   namespace Concentra.Web.Configuration.Pipelines.ExpandShortcodes {     /// <summary>     /// Expands shortcodes with the following format:     /// [item id=110D559F-DEA5-42EA-9C1C-8A5DF7E70EF9 fieldname="Title"]     /// </summary>     public class ExpandItemShortcodes : ExpandShortcodesProcessor     {         public override IEnumerable<Shortcode> GetShortcodes(string content)         {             if (String.IsNullOrWhiteSpace(content))             {                 return new List<Shortcode>();             }               var shortcodes = new List<Shortcode>();             var matches = Regex.Matches(content, @"\[item id=(?<id>.*) fieldname=(?<fieldname>.*)\]",                 RegexOptions.Compiled | RegexOptions.IgnoreCase);               foreach (var match in matches.OfType<Match>().Where(m => m.Success))             {                 shortcodes.Add(new Shortcode                                {                                    Unexpanded = match.Value,                                    Expanded = GetItem(                                        match.Groups["id"].Value,                                        match.Groups["fieldname"].Value)                                }                     );             }               return shortcodes;         }           public string GetItem(string id, string fieldName)         {             if (!String.IsNullOrEmpty(id) && ID.IsID(id))             {                 var item = Context.Database.GetItem(ID.Parse(id));                 if (item != null)                 {                     var name = fieldName.Replace("\"", String.Empty).Replace("'", String.Empty);                     if (item.Fields.Any(field => field.Name == name))                     {                         return item.Fields[name].Value;                     }                 }             }               return String.Empty;         }     } }