IDEA-143075 Autocompletion not working when an inner compiled enum is named "v1"

java/java-psi-impl/src/com/intellij/psi/impl/source/tree/java/PsiReferenceExpressionImpl.java

@@ -32,7 +32,6 @@ import com.intellij.psi.impl.PsiImplUtil;
 import com.intellij.psi.impl.PsiManagerEx;
 import com.intellij.psi.impl.source.SourceJavaCodeReference;
 import com.intellij.psi.impl.source.SourceTreeToPsiMap;
-import com.intellij.psi.impl.source.codeStyle.CodeEditUtil;
 import com.intellij.psi.impl.source.resolve.*;
 import com.intellij.psi.impl.source.tree.*;
 import com.intellij.psi.infos.CandidateInfo;
@@ -492,6 +491,11 @@ public class PsiReferenceExpressionImpl extends PsiReferenceExpressionBase imple
       return false;
     }
 
+    PsiClass containingClass = aClass.getContainingClass();
+    if (containingClass != null && !seemsScrambled(containingClass)) {
+      return false;
+    }
+
     final String name = aClass.getName();
     return name != null && !name.isEmpty() && name.length() <= 2;
   }

java/java-tests/testSrc/com/intellij/codeInsight/completion/HeavyNormalCompletionTest.groovy

@@ -31,7 +31,6 @@ import com.intellij.testFramework.PsiTestUtil
 import com.intellij.testFramework.fixtures.JavaCodeInsightFixtureTestCase
 import com.intellij.ui.JBColor
 import org.jetbrains.annotations.NotNull
-
 /**
  * @author peter
  */
@@ -204,4 +203,18 @@ public class SocketChannel {
     assert p.itemTextForeground == JBColor.foreground()
   }
 
+  public void "test seemingly scrambled subclass"() {
+    PsiTestUtil.addLibrary(myModule, JavaTestUtil.getJavaTestDataPath() + "/codeInsight/completion/normal/seemsScrambled.jar")
+    myFixture.configureByText 'a.java', '''import test.Books;
+
+class Foo {{ Books.Test.v<caret> }}
+'''
+    myFixture.completeBasic()
+    myFixture.checkResult '''import test.Books;
+
+class Foo {{ Books.Test.v1<caret> }}
+'''
+
+  }
+
 }