fix: disabling csharp.tmLanguage which uses unsupported syntax

org.eclipse.tm4e.language_pack/README.md

@@ -26,7 +26,6 @@ for the [Eclipse IDE](https://eclipseide.org).
 | Batch File <img src="syntaxes/bat/bat.png" width=16/> | file-extensions="bat, cmd" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/bat) [[upstream]](https://github.com/mmims/language-batchfile/commit/6154ae25a24e01ac9329e7bcf958e093cd8733a9)
 | BibTeX | file-extensions="bib" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/latex) [[upstream]](https://github.com/jlelong/vscode-latex-basics/commit/36411b38cf4ed18e02050249e2162b1316488686)
 | C | file-extensions="c, i" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/cpp) [[upstream]](https://github.com/jeff-hykin/better-c-syntax/commit/34712a6106a4ffb0a04d2fa836fd28ff6c5849a4)
-| C# | file-extensions="cake, cs, csx" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/csharp) [[upstream]](https://github.com/dotnet/csharp-tmLanguage/commit/6666eb1d5e6fb565a4110d6db645cc534fb3c6d2)
 | C++ | file-extensions="c++, cc, cpp, cxx, h, h++, h.in, hh, hpp, hpp.in, hxx, ii, inl, ino, ipp, ixx, tpp, txx" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/cpp) [[upstream]](https://github.com/jeff-hykin/better-cpp-syntax/commit/f1d127a8af2b184db570345f0bb179503c47fdf6)
 | Clojure <img src="syntaxes/clojure/clojure.png" width=16/> | file-extensions="clj, cljc, cljs, cljx, clojure, edn" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/clojure) [[upstream]](https://github.com/atom/language-clojure/commit/45bdb881501d0b8f8b707ca1d3fcc8b4b99fca03)
 | Code Snippets | file-extensions="code-snippets"<br />file-patterns="\*\*/User/profiles/\*/snippets/\*.json, \*\*/User/snippets/\*.json" | [1.85.2@microsoft/vscode](https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/json) [[upstream]](https://github.com/jeff-hykin/better-snippet-syntax/commit/2b1bb124cb2b9c75c3c80eae1b8f3a043841d654)

org.eclipse.tm4e.language_pack/about.html

@@ -57,11 +57,6 @@ <h2>About This Content</h2>
   <td>file-extensions="c, i"</td>
   <td><a href="https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/cpp">1.85.2@microsoft/vscode</a> <a href="https://github.com/jeff-hykin/better-c-syntax/commit/34712a6106a4ffb0a04d2fa836fd28ff6c5849a4">[upstream]</a>
 </tr>
-<tr>
-  <td>C#</td>
-  <td>file-extensions="cake, cs, csx"</td>
-  <td><a href="https://github.com/microsoft/vscode/tree/8b3775030ed1a69b13e4f4c628c612102e30a681/extensions/csharp">1.85.2@microsoft/vscode</a> <a href="https://github.com/dotnet/csharp-tmLanguage/commit/6666eb1d5e6fb565a4110d6db645cc534fb3c6d2">[upstream]</a>
-</tr>
 <tr>
   <td>C++</td>
   <td>file-extensions="c++, cc, cpp, cxx, h, h++, h.in, hh, hpp, hpp.in, hxx, ii, inl, ino, ipp, ixx, tpp, txx"</td>

org.eclipse.tm4e.language_pack/plugin.xml

@@ -186,26 +186,6 @@
     <grammar scopeName="source.c.platform" path="syntaxes/cpp/source.c.platform.tmLanguage.json" />
   </extension>
 
-  <!-- ======================================== -->
-  <!-- csharp/csharp: C# -->
-  <!-- ======================================== -->
-  <extension point="org.eclipse.core.contenttype.contentTypes">
-    <content-type id="org.eclipse.tm4e.language_pack.csharp" name="C#" base-type="org.eclipse.tm4e.language_pack.basetype" priority="low"
-                  file-extensions="cake,cs,csx" />
-  </extension>
-  <extension point="org.eclipse.tm4e.registry.grammars">
-    <grammar scopeName="source.cs" path="syntaxes/csharp/csharp.tmLanguage.json" />
-    <scopeNameContentTypeBinding scopeName="source.cs" contentTypeId="org.eclipse.tm4e.language_pack.csharp" />
-  </extension>
-
-  <extension point="org.eclipse.tm4e.languageconfiguration.languageConfigurations">
-    <languageConfiguration contentTypeId="org.eclipse.tm4e.language_pack.csharp" path="syntaxes/csharp/csharp.language-configuration.json" />
-  </extension>
-
-  <extension point="org.eclipse.tm4e.ui.snippets">
-    <snippet name="C# Example" path="syntaxes/csharp/csharp.example.cs" scopeName="source.cs" />
-  </extension>
-
   <!-- ======================================== -->
   <!-- css/css: CSS -->
   <!-- ======================================== -->

org.eclipse.tm4e.language_pack/updater/updater-config.yaml

@@ -103,6 +103,9 @@ sources:
           bat:
             label: Batch File
 
+      csharp:
+        ignored: uses variable length look-behind not supported by joni, see https://github.com/eclipse/tm4e/issues/677
+
       diff:
         ignored: theme support required
 
@@ -136,9 +139,7 @@ sources:
         ignored: 'broken, maybe because of file extension: *.log.?'
 
       markdown-math:
-        ignored: >-
-          broken because math.block begin regex not supported by Joni. Re-enable
-          when the following is fixed and integrated: https://github.com/microsoft/vscode/issues/181662
+        ignored: uses variable length look-behind not supported by joni, see https://github.com/eclipse/tm4e/issues/677
         languages:
           markdown-math:
            label: Markdown Math

org.eclipse.tm4e.language_pack/updater/updater-state.yaml

@@ -93,21 +93,6 @@ extensions:
         - .cuh
     inline-grammars:
     - source.c.platform
-  csharp:
-    github:
-      repo: microsoft/vscode
-      path: extensions/csharp
-      ref: 1.85.2
-      commit: 8b3775030ed1a69b13e4f4c628c612102e30a681
-    languages:
-      csharp:
-        label: C#
-        scope-name: source.cs
-        upstream-url: https://github.com/dotnet/csharp-tmLanguage/commit/6666eb1d5e6fb565a4110d6db645cc534fb3c6d2
-        file-extensions:
-        - .cake
-        - .cs
-        - .csx
   css:
     github:
       repo: microsoft/vscode