Feat: syntax highlighting in markdown code blocks

README.md

@@ -8,7 +8,7 @@ This [extension for VSCode](https://marketplace.visualstudio.com/items?itemName=
 
 ## Features
 
-- Syntax highlighting grammar for Nushell scripts (`.nu` files)
+- Syntax highlighting grammar for Nushell scripts (`.nu` files) and ``nushell`` codeblocks in Markdown files
 - Goto definition
 - Hover support
 - Validation (errors with red squiggly lines)

package.json

@@ -51,6 +51,16 @@
         "language": "nushell",
         "scopeName": "source.nushell",
         "path": "./syntaxes/nushell.tmLanguage.json"
+      },
+      {
+        "scopeName": "markdown.nushell.codeblock",
+        "path": "./syntaxes/codeblock.json",
+        "injectTo": [
+          "text.html.markdown"
+        ],
+        "embeddedLanguages": {
+          "meta.embedded.block.nushell": "nushell"
+        }
       }
     ],
     "keybindings": [

syntaxes/codeblock.json

@@ -0,0 +1,45 @@
+{
+  "fileTypes": [],
+  "injectionSelector": "L:text.html.markdown",
+  "patterns": [
+    {
+      "include": "#nushell-code-block"
+    }
+  ],
+  "repository": {
+    "nushell-code-block": {
+      "begin": "(^|\\G)(\\s*)(\\`{3,}|~{3,})\\s*(?i:(nushell)(\\s+[^`~]*)?$)",
+      "name": "markup.fenced_code.block.markdown",
+      "end": "(^|\\G)(\\2|\\s{0,3})(\\3)\\s*$",
+      "beginCaptures": {
+        "3": {
+          "name": "punctuation.definition.markdown"
+        },
+        "4": {
+          "name": "fenced_code.block.language.markdown"
+        },
+        "5": {
+          "name": "fenced_code.block.language.attributes.markdown"
+        }
+      },
+      "endCaptures": {
+        "3": {
+          "name": "punctuation.definition.markdown"
+        }
+      },
+      "patterns": [
+        {
+          "begin": "(^|\\G)(\\s*)(.*)",
+          "while": "(^|\\G)(?!\\s*([`~]{3,})\\s*$)",
+          "contentName": "meta.embedded.block.nushell",
+          "patterns": [
+            {
+              "include": "source.nushell"
+            }
+          ]
+        }
+      ]
+    }
+  },
+  "scopeName": "markdown.nushell.codeblock"
+}