Fix C# language level override with "latest"

[citizenmatt]

It was incorrectly treating this as though it were "default", and trying to apply heuristics. It now correctly treats this as "latest", e.g. C# 7.3 at time of going to press.

[citizenmatt]

The Travis builds completed successfully, but didn't update their statuses. Oh well. Merging!

[benoit-dubreuil]

It still happens in the latest Rider 2020.2 version. I accidentally clicked on reset and can't undo that, so Rider would automatically select the right C# version. So, when I try to select C# version 7.3, it automatically switches to the C# latest minor (latest) either at the same time or a few seconds / minutes later (try typing analyzing the code or typing a line or two).

It is frustrating, as it suggests code changes related to C# 8.0 and this version isn't supported in Unity.

[van800]

What is your setup (Unity version, Rider version, OS)?
Please attach logs from Help->Collect Logs.
If you have a *.dotSettings file near sln, please attach it also.
@benoit-dubreuil

[benoit-dubreuil]

Unity : 2019.4.3f1
Rider : 2020.2
OS : Windows 10 Home - 64-bit

rider-logs-20200817-135947.zip

dotSettings.zip

I noticed my problem (the consequence, not the cause) is in the file EditMode.csproj.DotSettings, more specifically the line :
<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">Default</s:String></wpf:ResourceDictionary>

I deleted that file and it fixed my problem but it's still a bug as far as I know.

[van800]

I wonder how that setting was introduced. Do you remember adding it? Is it in your vcs or only locally?

[benoit-dubreuil]

I wonder how that setting was introduced.

Do you remember adding it?

Yes. I clicked on the reset button shown on the previous image because I was testing C# 8.0 features.

Is it in your vcs or only locally?

Only locally.

[van800]

Thanks! I have started internal discussion https://jetbrains.slack.com/archives/C53QFRZ7G/p1597695558405100

[van800]

Request opened https://youtrack.jetbrains.com/issue/RIDER-49393