GitHub flavored markdown code syntax highlighting forcing type

Question

Take this simple code markdown:

```cs
var x = new Locked<Rec>(new ("John", 35)); 
```

This renders in GitHub readme like this:

I now just add a definition:

```cs
record Rec(string Name, int Age);
var x= new Locked<Rec>(new ("John", 35)); 
```

and it now renders like this:

As you can see the type Locked and the new are for some reason no longer coloured purple. Why is this and how can I get around it ?

Answer 1

Visual Studio Code does the same thing.

I'm not a C# developer, but the examples I found all instantiate the record inside Main:

```cs
record Rec(string Name, int Age);

public static void Main()
{
    var x = new Locked<Rec>(new ("John", 35)); 
}
```

This seems to get both VSCode and GitHub to highlight syntax as you expect:

It works even better if you declare the record inside Main as well: