G-code syntax highlighting: register gcode grammar in code_note_highlight; add hljs-name/attr colors to theme

scripts/code_note_highlight.js

@@ -3,8 +3,39 @@
     var codes = document.querySelectorAll("#content pre code:not(.language-mermaid)");
     if (!codes.length) return;
 
+    function registerGcode() {
+        if (window.hljs.getLanguage("gcode")) return;
+        window.hljs.registerLanguage("gcode", function (hljs) {
+            return {
+                name: "G-code (ISO 6983)",
+                aliases: ["nc"],
+                case_insensitive: true,
+                keywords: {
+                    $pattern: "[A-Z_][A-Z0-9_.]*",
+                    keyword: "IF DO WHILE ENDWHILE CALL ENDIF SUB ENDSUB GOTO REPEAT ENDREPEAT EQ LT GT NE GE LE OR XOR"
+                },
+                contains: [
+                    { className: "meta", begin: /[O][0-9]+/ },
+                    { className: "meta", begin: /[%]/ },
+                    hljs.C_LINE_COMMENT_MODE,
+                    hljs.C_BLOCK_COMMENT_MODE,
+                    hljs.COMMENT(/\(/, /\)/),
+                    { className: "number", begin: /[+-]?([0-9]+([.][0-9]*)?|[.][0-9]+)/ },
+                    { className: "string", begin: /["]/, end: /["]/, illegal: null },
+                    { className: "name", begin: /[G][0-9]+([.][0-9]+)?/ },
+                    { className: "name", begin: /[M][0-9]+([.][0-9]+)?/ },
+                    { className: "attr", begin: /(VC|VS)[0-9]+/ },
+                    { className: "attr", begin: /[#][0-9]+/ },
+                    { className: "built_in", begin: /(ATAN|ABS|ACOS|ASIN|SIN|COS|EXP|FIX|FUP|ROUND|LN|TAN)(\[)/, end: /[\]]/, contains: [{ className: "number", begin: /[+-]?[0-9.]+/ }] },
+                    { className: "symbol", begin: /[N][0-9]+/ }
+                ]
+            };
+        });
+    }
+
     function apply() {
         if (!window.hljs) return;
+        registerGcode();
         codes.forEach(function (c) {
             c.classList.add("hljs");
             hljs.highlightElement(c);

theme/blog_share_theme.css

@@ -1787,4 +1787,9 @@ html.theme-light .mermaid svg .cluster .nodeLabel,
 html.theme-light .mermaid svg .cluster-label text {
     fill: #556753 !important;
     color: #556753 !important;
-}
+}
+/* ---------- G-code / Zusatz-Scopes (name = G/M-Codes, attr = Parameter) ---------- */
+.hljs-name { color: #E1CE98; }
+.hljs-attr { color: #77838a; }
+html.theme-light .hljs-name { color: #4c6c94; }
+html.theme-light .hljs-attr { color: #556753; }