From cc300fbfe302720d8b62b545ad866de75029b95e Mon Sep 17 00:00:00 2001
From: Jon Sequeira <jonsequeira@gmail.com>
Date: Tue, 18 Oct 2022 18:26:25 -0700
Subject: [PATCH] fix Jupyter metadata

---
 .../Jupyter/InteractiveDocumentExtensions.cs     | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/Microsoft.DotNet.Interactive.Documents/Jupyter/InteractiveDocumentExtensions.cs b/src/Microsoft.DotNet.Interactive.Documents/Jupyter/InteractiveDocumentExtensions.cs
index cafaad47a1..60bca16b5b 100644
--- a/src/Microsoft.DotNet.Interactive.Documents/Jupyter/InteractiveDocumentExtensions.cs
+++ b/src/Microsoft.DotNet.Interactive.Documents/Jupyter/InteractiveDocumentExtensions.cs
@@ -13,20 +13,20 @@ public static InteractiveDocument WithJupyterMetadata(
         this InteractiveDocument document,
         string language = "C#")
     {
-        var (moniker, langVersion, fileExtension) =
-            language switch
+        var (moniker, canonicalLanguageName, langVersion, fileExtension) =
+            language.ToLowerInvariant() switch
             {
-                "C#" or "csharp" => ("csharp", "10.0", ".cs"),
-                "F#" or "fsharp" => ("fsharp", "6.0", ".fs"),
-                "PowerShell" or "pwsh" => ("powershell", "7.0", ".ps1"),
+                "c#" or "csharp" => ("csharp","C#", "10.0", ".cs"),
+                "f#" or "fsharp" => ("fsharp","F#", "6.0", ".fs"),
+                "powershell" or "pwsh" => ("powershell", "PowerShell", "7.0", ".ps1"),
                 _ => throw new ArgumentException($"Unrecognized language: {language}") 
             };
 
         document.Metadata.GetOrAdd("kernelspec", _ => new Dictionary<string, object>())
                 .MergeWith(new Dictionary<string, object>
                 {
-                    ["display_name"] = $".NET ({language})",
-                    ["language"] = language,
+                    ["display_name"] = $".NET ({canonicalLanguageName})",
+                    ["language"] = canonicalLanguageName,
                     ["name"] = $".net-{moniker}"
                 });
 
@@ -35,7 +35,7 @@ public static InteractiveDocument WithJupyterMetadata(
                 {
                     ["file_extension"] = fileExtension,
                     ["mimetype"] = $"text/x-{moniker}",
-                    ["name"] = language,
+                    ["name"] = canonicalLanguageName,
                     ["pygments_lexer"] = moniker,
                     ["version"] = langVersion
                 });