feat: markdown embedded support

README.md

@@ -5,6 +5,7 @@ Adds [nix](https://nixos.org/) language support for VSCode Editor.
 ## Features
 
 * Syntax Highlight
+  + nix code snippets inside `markdown` files also work.
   + Thanks to https://github.com/wmertens/sublime-nix for the grammer file
 * Formatting support
   + with the help of [nixpkgs-format](https://github.com/nix-community/nixpkgs-fmt)
@@ -53,4 +54,4 @@ I have created this since the other nix-language extension hasn't been updated o
 ---
 Special thanks to
  * [article](https://blog.nojaf.com/2018/12/17/writing-a-vscode-extension-with-fable-2-1/) to have all the pieces in one place to develop vscode extension with `Fable` .
- * Many of the functions are copied from [vscode-fish](https://github.com/bmalehorn/vscode-fish/)
+ * The extension [vscode-fish](https://github.com/bmalehorn/vscode-fish/) is modified to work for `nix` .

package.json

@@ -44,6 +44,16 @@
         "language": "nix",
         "scopeName": "source.nix",
         "path": "./syntaxes/nix.tmLanguage.json"
+      },
+      {
+        "scopeName": "markdown.nix.codeblock",
+        "path": "./syntaxes/injection.json",
+        "injectTo": [
+          "text.html.markdown"
+        ],
+        "embeddedLanguages": {
+          "meta.embedded.block.nix": "nix"
+        }
       }
     ],
     "snippets": [
@@ -64,7 +74,7 @@
     "vscode": "^1.1.25"
   },
   "scripts": {
-    "prebuild": "js-yaml syntaxes/nix.YAML-tmLanguage > syntaxes/nix.tmLanguage.json",
+    "prebuild": "js-yaml syntaxes/nix.YAML-tmLanguage > syntaxes/nix.tmLanguage.json && js-yaml syntaxes/injection.yml > syntaxes/injection.json",
     "build": "tsc -p ./",
     "watch": "yarn build --watch",
     "postinstall": "node ./node_modules/vscode/bin/install",

syntaxes/injection.yml

@@ -0,0 +1,27 @@
+---
+fileTypes: []
+injectionSelector: L:text.html.markdown
+patterns:
+  - include: "#nix-code-block"
+repository:
+  nix-code-block:
+    begin: "(^|\\G)(\\s*)(\\`{3,}|~{3,})\\s*(?i:(nix)(\\s+[^`~]*)?$)"
+    name: markup.fenced_code.block.markdown
+    end: "(^|\\G)(\\2|\\s{0,3})(\\3)\\s*$"
+    beginCaptures:
+      "3":
+        name: punctuation.definition.markdown
+      "5":
+        name: fenced_code.block.language
+      "6":
+        name: fenced_code.block.language.attributes
+    endCaptures:
+      "3":
+        name: punctuation.definition.markdown
+    patterns:
+      - begin: "(^|\\G)(\\s*)(.*)"
+        while: "(^|\\G)(?!\\s*([`~]{3,})\\s*$)"
+        contentName: meta.embedded.block.nix
+        patterns:
+          - include: source.nix
+scopeName: markdown.nix.codeblock