Replace line break characters with in ASP.NET MVC Razor view

Applying the DRY principle to Omar's solution, here's an HTML Helper extension:

using System.Web.Mvc;
using System.Text.RegularExpressions;
namespace System.Web.Mvc.Html {
    public static class MyHtmlHelpers {
        public static MvcHtmlString EncodedReplace(this HtmlHelper helper, string input, string pattern, string replacement) {
            return new MvcHtmlString(Regex.Replace(helper.Encode(input), pattern, replacement));
        }
    }
}

Usage (with improved regex):

@Html.EncodedReplace(Model.CommentText, "[\n\r]+", "
")

This also has the added benefit of putting less onus on the Razor View developer to ensure security from XSS vulnerabilities.

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My concern with Jacob's solution is that rendering the line breaks with CSS breaks the HTML semantics.