dotnet · colombod · May 31, 2019 · May 29, 2019 · May 30, 2019 · May 30, 2019
diff --git a/MLS.Agent.Tests/Markdown/MarkdownFileTests.cs b/MLS.Agent.Tests/Markdown/MarkdownFileTests.cs
@@ -279,6 +279,49 @@ static void MyProgram(string[] args)
                 buttons.Should().BeNull();
             }
 
+            [Fact]
+            public async Task Should_emit_math_inline_block_rendering()
+            {
+                var html = await RenderHtml(
+                    ("Readme.md", @"this is math inline $$\sum ^{n}_{i=0}\left(x_{i}+a_{i}y_{i}\right)$$"));
+
+                var htmlDocument = new HtmlDocument();
+                htmlDocument.LoadHtml(html);
+
+                var math = htmlDocument.DocumentNode
+                    .SelectSingleNode("//span");
+
+                math.HasClass("math").Should().BeTrue();
+                math.InnerText.Should().Match(@"\(\sum ^{n}_{i=0}\left(x_{i}+a_{i}y_{i}\right)\)");
+            }
+
+            [Fact]
+            public async Task Should_emit_math_block_rendering()
+            {
+                var html = await RenderHtml(
+                    ("Readme.md", @"$$
+\begin{equation}
+  \int_0^\infty \frac{x^3}{e^x-1}\,dx = \frac{\pi^4}{15}
+  \label{eq:sample}
+\end{equation}
+$$"));
+
+                var htmlDocument = new HtmlDocument();
+                htmlDocument.LoadHtml(html);
+
+                var math = htmlDocument.DocumentNode
+                    .SelectSingleNode("//div");
+
+                math.HasClass("math").Should().BeTrue();
+                math.InnerText.EnforceLF().Should().Match(@"
+\[
+\begin{equation}
+  \int_0^\infty \frac{x^3}{e^x-1}\,dx = \frac{\pi^4}{15}
+  \label{eq:sample}
+\end{equation}
+\]".EnforceLF());
+            }
+
             [Fact]
             public async Task Should_emit_pre_style_for_hidden_blocks()
             {

diff --git a/MLS.Agent/Controllers/DocumentationController.cs b/MLS.Agent/Controllers/DocumentationController.cs
@@ -120,6 +120,7 @@ public static async Task<IHtmlContent> SessionControlsHtml(MarkdownFile markdown
     <script src=""/api/trydotnet.min.js?v={_cacheBuster}""></script>
     <link rel=""stylesheet"" href=""/css/trydotnet.css?v={_cacheBuster}"">  
     <link rel=""icon"" type=""image/png"" href=""favicon-32x32.png"">
+    {MathSupport()}
     <title>dotnet try - {markdownFile.Path.Value.HtmlEncode()}</title>
 </head>
 
@@ -138,6 +139,17 @@ public static async Task<IHtmlContent> SessionControlsHtml(MarkdownFile markdown
 
 </html>".ToHtmlContent();
 
+        private IHtmlContent MathSupport() =>
+            @"
+    <script type=""text/x-mathjax-config"">
+        MathJax.Hub.Config({
+        tex2jax: {inlineMath: [[""$"",""$""],[""\\("",""\\)""]]},       
+        showMathMenu: false,
+        showMathMenuMSIE: false
+    });
+    </script>
+    <script type=""text/javascript"" src=""https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS_SVG""></script>".ToHtmlContent();
+
         private async Task<IHtmlContent> OneColumnLayoutScaffold(string hostUrl, MarkdownFile markdownFile) =>
             Layout(hostUrl, markdownFile,
                    $@"

diff --git a/MLS.Agent/MLS.Agent.csproj b/MLS.Agent/MLS.Agent.csproj
@@ -56,7 +56,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Markdig" Version="0.16.0" />
+    <PackageReference Include="Markdig" Version="0.17.0" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.3.0" />
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Blazor.Server" Version="0.7.0" />

diff --git a/MLS.Agent/Markdown/MarkdownProject.cs b/MLS.Agent/Markdown/MarkdownProject.cs
@@ -8,6 +8,7 @@
 using System.Reactive.Disposables;
 using System.Threading.Tasks;
 using Markdig;
+using Markdig.Extensions.Mathematics;
 using Microsoft.DotNet.Try.Markdown;
 using Recipes;
 using WorkspaceServer;
@@ -71,7 +72,7 @@ public void WriteAllText(RelativeFilePath path, string text)
             {
             }
         }
-      
+
         internal IDirectoryAccessor DirectoryAccessor { get; }
 
         private readonly PackageRegistry _packageRegistry;
@@ -85,7 +86,7 @@ internal MarkdownProject(PackageRegistry packageRegistry) : this(new NullDirecto
         }
 
         public MarkdownProject(
-            IDirectoryAccessor directoryAccessor, 
+            IDirectoryAccessor directoryAccessor,
             PackageRegistry packageRegistry,
             IDefaultCodeBlockAnnotations defaultAnnotations = null)
         {
@@ -118,11 +119,12 @@ internal MarkdownPipeline GetMarkdownPipelineFor(RelativeFilePath filePath)
                 var relativeAccessor = DirectoryAccessor.GetDirectoryAccessorForRelativePath(filePath.Directory);
 
                 return new MarkdownPipelineBuilder()
-                    .UseAdvancedExtensions()
                     .UseCodeBlockAnnotations(
-                        relativeAccessor, 
-                        _packageRegistry, 
+                        relativeAccessor,
+                        _packageRegistry,
                         defaultAnnotations)
+                    .UseMathematics()
+                    .UseAdvancedExtensions()
                     .Build();
             });
         }

diff --git a/Microsoft.DotNet.Try.Markdown.Tests/Microsoft.DotNet.Try.Markdown.Tests.csproj b/Microsoft.DotNet.Try.Markdown.Tests/Microsoft.DotNet.Try.Markdown.Tests.csproj
@@ -11,7 +11,7 @@
     <PackageReference Include="Assent" Version="1.3.1" />
     <PackageReference Include="HtmlAgilityPack" Version="1.9.0" />
     <PackageReference Include="FluentAssertions" Version="5.6.0" />
-    <PackageReference Include="Markdig" Version="0.16.0" />
+    <PackageReference Include="Markdig" Version="0.17.0" />
   </ItemGroup>
 
   <ItemGroup>

diff --git a/Microsoft.DotNet.Try.Markdown/AnnotatedCodeBlockParser.cs b/Microsoft.DotNet.Try.Markdown/AnnotatedCodeBlockParser.cs
@@ -23,10 +23,7 @@ public AnnotatedCodeBlockParser(CodeFenceAnnotationsParser codeFenceAnnotationsP
         protected override AnnotatedCodeBlock CreateFencedBlock(BlockProcessor processor) =>
             new AnnotatedCodeBlock(this, _order++);
 
-        protected bool ParseCodeOptions(
-            BlockProcessor state,
-            ref StringSlice line,
-            IFencedBlock fenced)
+        protected bool ParseCodeOptions(BlockProcessor state, ref StringSlice line, IFencedBlock fenced, char openingCharacter)
         {
             if (!(fenced is AnnotatedCodeBlock codeLinkBlock))
             {

diff --git a/Microsoft.DotNet.Try.Markdown/Microsoft.DotNet.Try.Markdown.csproj b/Microsoft.DotNet.Try.Markdown/Microsoft.DotNet.Try.Markdown.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Markdig" Version="0.16.0" />
+    <PackageReference Include="Markdig" Version="0.17.0" />
     <PackageReference Include="System.CommandLine.Experimental" Version="0.2.0-alpha.19261.1" />
     <PackageReference Include="Microsoft.AspNetCore.Html.Abstractions" Version="2.1.1" />
   </ItemGroup>

diff --git a/docs/Learn math.md b/docs/Learn math.md
@@ -0,0 +1,15 @@
+# dotnet try
+
+Learn math with .NET.
+
+Given the following equation
+
+$$
+\sum ^{20}_{i=0}\left(x_{i}+a_{i}y_{i}\right)
+$$
+
+create an implementation using real code
+
+
+```csharp --source-file ./samples/BasicConsole/Program.cs --project ./samples/BasicConsole/BasicConsole.csproj  --region wat --session "say meow..."
+```