added syntax highlighting

buildroot-v86/board/v86/rootfs_overlay/etc/profile

@@ -32,7 +32,7 @@ help_tips(){
   echo ""
   echo 'TIPS'
   echo '----'
-  echo 'text editors          ' "type '<vi|mg|nano> <textfile>'"
+  echo 'text editors          ' "type '<codemirror|vi|mg|nano> <textfile>'"
   echo 'programming languages ' "type 'ls ~/bin/helloworld*'"
   echo 'run 64bit linux app   ' "type 'blink <x86_64 binary>'"
   echo 'paste text            ' "ctrl/cmd+shift+v'"

buildroot-v86/board/v86/rootfs_overlay/root/opt/codemirror/codemirror.js

@@ -66,7 +66,13 @@ AFRAME.registerComponent('codemirror', {
     this.el.setAttribute("window", `title: codemirror; uid: ${this.el.dom.id}; attach: #overlay; dom: #${this.el.dom.id}; width: ${this.data.width}px; height: ${this.data.height}px`)
     this.editor = CodeMirror( this.el.dom, {
       value,
-      mode: "htmlmixed",
+      mode: this.data.file.match(/\.js$/)   ? "text/javascript" :
+            this.data.file.match(/\.css$/)  ? "text/css" : 
+            this.data.file.match(/\.html$/) ? "htmlmixed" :
+            this.data.file.match(/\.md$/)   ? "markdown" :
+            this.data.file.match(/\.py$/)   ? "python" :
+            this.data.file.match(/\.lua$/)  ? "lua" :
+            "text/javascript",
       lineNumbers: true,
       styleActiveLine: true,
       matchBrackets: true,
@@ -198,6 +204,9 @@ AFRAME.utils.require({
     cmxml:         "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/xml/xml.js",
     cmjavascript:  "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/javascript/javascript.js",
     cmcss:         "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/css/css.js",
+    cmlua:         "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/lua/lua.js",
+    cmpython:      "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/python/python.js",
+    cmmarkdown:    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/markdown/markdown.js",
     highlight:     "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.35.0/mode/htmlmixed/htmlmixed.js",
   })
 )