Steps to Reproduce:

1. Install VSCode version 1.93.0 or higher
2. Install RedCMD.tmlanguage-syntax-highlighter extension
3. Scroll down to example codeblock (text)
4. Notice that it is highlighted as JSON
5. Close and open the extension readme preview
6. Notice that it has not updated to JSON TextMate ❌
   

Previously working:

1. Install VSCode version 1.87.0 to 1.92.2
2. Install RedCMD.tmlanguage-syntax-highlighter extension
3. Scroll down to example codeblock (text)
4. Notice that it is highlighted as JSON
5. Close and open the extension readme preview
6. Notice that it has now updated to JSON TextMate ✅
   

I suspect this commit caused it 8245d42

• Update marked #225096

related:

• Improve extension README preview markdown codeblock language detection #205329

assign @mjbvz?

• VS Code Version: 1.95.3
• OS Version: Windows 11