update

Author: shuaiyuanxx

src/common/FilePreviewCommon/MarkdownHelper.cs

@@ -39,7 +39,7 @@ public static string MarkdownHtml(string fileContent, string theme, string fileP
             var softlineBreak = new Markdig.Extensions.Hardlines.SoftlineBreakAsHardlineExtension();
 
             MarkdownPipelineBuilder pipelineBuilder;
-            pipelineBuilder = new MarkdownPipelineBuilder().UseAdvancedExtensions().UseEmojiAndSmiley().UseYamlFrontMatter().UseMathematics().DisableHtml();
+            pipelineBuilder = new MarkdownPipelineBuilder().UseAdvancedExtensions().UseEmojiAndSmiley().UseYamlFrontMatter().UseMathematics();
             pipelineBuilder.Extensions.Add(extension);
             pipelineBuilder.Extensions.Add(softlineBreak);
 

src/modules/peek/Peek.FilePreviewer/Controls/BrowserControl.xaml.cs

@@ -222,10 +222,10 @@ private async void PreviewWV2_Loaded(object sender, RoutedEventArgs e)
 
         private void CoreWebView2_WebResourceRequested(CoreWebView2 sender, CoreWebView2WebResourceRequestedEventArgs args)
         {
-            if (args.Request.Uri.StartsWith("http://", StringComparison.OrdinalIgnoreCase) ||
-                args.Request.Uri.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
+            // Show local file we've saved with the markdown contents. Block all else.
+            if (Source != null && new Uri(args.Request.Uri) != Source)
             {
-                args.Response = sender.Environment.CreateWebResourceResponse(null, 403, "Forbidden", string.Empty);
+                args.Response = sender.Environment.CreateWebResourceResponse(null, 403, "Forbidden", null);
             }
         }