From f000d9c4518dccd1e337b1806008e071a5b74f71 Mon Sep 17 00:00:00 2001
From: Albert Meltzer <7529386+kitbellew@users.noreply.github.com>
Date: Tue, 26 Nov 2024 00:59:41 -0800
Subject: [PATCH] FormatOps: extend getSlbEndOnLeft to LeftBrace

---
 .../org/scalafmt/internal/FormatOps.scala     | 31 ++++++++++++-------
 .../test/scala/org/scalafmt/FormatTests.scala |  2 +-
 2 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
index 260be8e035..e398bde270 100644
--- a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
+++ b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
@@ -94,18 +94,25 @@ class FormatOps(
           ) start
           else null
         }
-      case _: T.LeftBrace => start.left match {
-          case _: T.RightParen
-              if start.leftOwner.is[Member.SyntaxValuesClause] &&
-                start.rightOwner.parent.exists {
-                  case p: Tree.WithBody => p.body eq start.rightOwner
-                  case _ => false
-                } => null
-          case _: T.Interpolation.SpliceStart
-              if style.newlines.inInterpolation eq
-                Newlines.InInterpolation.allow => null
-          case _ => start
-        }
+      case _: T.LeftBrace if (start.left match {
+            case _: T.CloseDelim =>
+              (start.leftOwner match {
+                case _: Member.SyntaxValuesClause => true
+                case t: Term.Block => t.parent.is[Term.ArgClause]
+                case _ => false
+              }) &&
+              (start.rightOwner match {
+                case _: Term.ArgClause => true
+                case t => t.parent.exists {
+                    case p: Tree.WithBody => p.body eq start.rightOwner
+                    case _: Term.ArgClause => true
+                    case _ => false
+                  }
+              })
+            case _: T.Interpolation.SpliceStart =>
+              style.newlines.inInterpolation eq Newlines.InInterpolation.allow
+            case _ => false
+          }) => null
       case _: T.RightBracket if start.left.is[T.RightBracket] => null
       case _: T.LeftBracket => null
       case _: T.Dot => start.rightOwner match {
diff --git a/scalafmt-tests/shared/src/test/scala/org/scalafmt/FormatTests.scala b/scalafmt-tests/shared/src/test/scala/org/scalafmt/FormatTests.scala
index a25dc2a92b..eb88a5a5f3 100644
--- a/scalafmt-tests/shared/src/test/scala/org/scalafmt/FormatTests.scala
+++ b/scalafmt-tests/shared/src/test/scala/org/scalafmt/FormatTests.scala
@@ -144,7 +144,7 @@ class FormatTests extends FunSuite with CanRunTests with FormatAssertions {
     val explored = Debug.explored.get()
     logger.debug(s"Total explored: $explored")
     if (!onlyUnit && !onlyManual)
-      assertEquals(explored, 1183844, "total explored")
+      assertEquals(explored, 1183838, "total explored")
     val results = debugResults.result()
     // TODO(olafur) don't block printing out test results.
     // I don't want to deal with scalaz's Tasks :'(