Fix analyzer RCS0056 - interpolated string (#1521)

Author: josefpihrt

ChangeLog.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fix analyzer [RCS0053](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS0053) ([PR](https://github.com/dotnet/roslynator/pull/1518))
+- Fix analyzer [RCS0056](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS0056) ([PR](https://github.com/dotnet/roslynator/pull/1521))
 
 ## [4.12.5] - 2024-09-13
 

src/Formatting.Analyzers/CSharp/LineIsTooLongAnalyzer.cs

@@ -115,6 +115,7 @@ private static void AnalyzeSyntaxTree(SyntaxTreeAnalysisContext context)
                     SyntaxKind.InterpolatedRawStringEndToken,
                     SyntaxKind.MultiLineRawStringLiteralToken,
 #endif
+                    SyntaxKind.InterpolatedStringTextToken,
                     SyntaxKind.InterpolatedStringEndToken))
                 {
                     SyntaxNode parent = token2.Parent;

src/Tests/Formatting.Analyzers.Tests/RCS0056LineIsTooLongTests.cs

@@ -1305,6 +1305,24 @@ static void M(string x, int y)
             0);
     }
 }
+"""");
+    }
+
+    [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.LineIsTooLong)]
+    public async Task TestNoDiagnostic_LongRawStringLiteral2()
+    {
+        await VerifyNoDiagnosticAsync(""""
+class C
+{
+    void M()
+    {
+        string x = "x";
+        var value = $$"""
+            xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+            {{x}}
+            """;
+    }
+}
 """");
     }
 }