roslyn
https://github.com/dotnet/roslyn
C#
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
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- Issues
- vs 2026 missing rename settings
- [API Proposal]: Obsolete `SourceProductionContext.ReportDiagnostic`
- Comment selected code formats incorrectly
- Test plan for "extension indexers" feature
- Extension member and extension implementation are not tracked together by IDE
- 'ref safety' analysis is wrong for collection expressions targeting ref-types that implement IEnumerable.
- "Extract Method" changes the behavior of a VB.NET program
- Fix trivial spelling mistake
- RefactoringError in Visual Studio when adding a tuple in a standard for-next-loop
- intellisense in VB.net is broken
- Docs
- C# not yet supported