C# syntax highlighting is broken by multiline types

[alexr00]

Originally from @svenskmand in microsoft/vscode#96341

• VSCode Version:
  Version: 1.44.2 (system setup)
  Commit: ff915844119ce9485abfe8aa9076ec76b5300ddd
  Date: 2020-04-16T16:36:23.138Z
  Electron: 7.1.11
  Chrome: 78.0.3904.130
  Node.js: 12.8.1
  V8: 7.8.279.23-electron.0
  OS: Windows_NT x64 10.0.18363
• OS Version: Windows 10

Steps to Reproduce:

1. Open a new C# file and input the following code

namespace Foo {
	public interface IBar<T> {
		IList<T> Baz(IList<IList<IList<IList<IList<IList<
		IList<IList<T>>>>>>>> foobar);		
	}	
}

2. The type of the foobar variable and the rest of the method has a white text color and no syntax highlighting.

This is how the syntax highlighting looks before the line break:

This is how the syntax highlighting looks with the line break:

Does this issue occur when all extensions are disabled?: Yes

[svenskmand]

Any update on this? :)

[npapapietro]

Not sure if this is related but other valid code is broken in multiline statements as well for example

namespace Foo
{
    public class Bar
    {
        public string Name {get; set;}

        public string Test(Bar[] myArray)
        {
            string result = myArray
                                .Where(a => a.Name.Length > 2)
                                .FirstOrDefault()?
                                .Name ?? "Name";

            return result;
        }
    }
}

I'm noticing that even the embedded text here is broken.

I'm using dotnetcore3.1 and C# 8

[wise0704]

Not sure if this is related but other valid code is broken in multiline statements as well for example

namespace Foo
{
    public class Bar
    {
        public string Name {get; set;}

        public string Test(Bar[] myArray)
        {
            string result = myArray
                                .Where(a => a.Name.Length > 2)
                                .FirstOrDefault()?
                                .Name ?? "Name";

            return result;
        }
    }
}

I'm noticing that even the embedded text here is broken.

I'm using dotnetcore3.1 and C# 8

That is because ? is treated as a conditional operator since it cannot look into next line to see the presence of a . and then backtrack.
Related issue was #183 and has been fixed.

[wise0704]

This issue is also the same problem as #63 and other linked issues under it.