C# scripting should use language version "latest" by default #2001
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In the past lang version
Latest
used to resolve to7.1
so in order to force C# 8 in scripting we enabled it explicitly.Now this is no longer correct, so resetting back to
Latest
as Roslyn does it https://github.com/dotnet/roslyn/blob/version-3.2.0/src/Scripting/CSharp/CSharpScriptCompiler.cs#L14Additionally added a test so if
Latest
no longer means9
, the test will break and let us decide how to proceed.