Only print using when not a lambda

Author: fmonniot

compiler/src/scala/quoted/runtime/impl/printers/SourceCode.scala

@@ -460,7 +460,7 @@ object SourceCode {
 
       case tree @ Lambda(params, body) =>  // must come before `Block`
         inParens {
-          printArgsDefs(params)
+          printArgsDefs(params, isLambda = true)
           this += (if tree.tpe.isContextFunctionType then " ?=> " else  " => ")
           printTree(body)
         }
@@ -804,14 +804,14 @@ object SourceCode {
       }
     }
 
-    private def printArgsDefs(args: List[ValDef])(using elideThis: Option[Symbol]): Unit = {
+    private def printArgsDefs(args: List[ValDef], isLambda: Boolean = false)(using elideThis: Option[Symbol]): Unit = {
       val argFlags = args match {
         case Nil => Flags.EmptyFlags
         case arg :: _ => arg.symbol.flags
       }
       inParens {
         if (argFlags.is(Flags.Implicit) && !argFlags.is(Flags.Given)) this += "implicit "
-        if (argFlags.is(Flags.Given)) this += "using "
+        if (argFlags.is(Flags.Given) && !isLambda) this += "using "
 
         def printSeparated(list: List[ValDef]): Unit = list match {
           case Nil =>