restore autopopup after typing # in javadoc (IDEA-135231)

java/java-impl/src/com/intellij/codeInsight/completion/JavadocCompletionConfidence.java

@@ -33,11 +33,16 @@ public class JavadocCompletionConfidence extends CompletionConfidence {
   @NotNull
   @Override
   public ThreeState shouldSkipAutopopup(@NotNull PsiElement contextElement, @NotNull PsiFile psiFile, int offset) {
-    if (psiElement().inside(PsiDocTag.class).accepts(contextElement) && findJavaReference(psiFile, offset - 1) != null) {
-      return ThreeState.NO;
-    }
-    if (PlatformPatterns.psiElement(JavaDocTokenType.DOC_TAG_NAME).accepts(contextElement)) {
-      return ThreeState.NO;
+    if (psiElement().inside(PsiDocTag.class).accepts(contextElement)) {
+      if (findJavaReference(psiFile, offset - 1) != null) {
+        return ThreeState.NO;
+      }
+      if (PlatformPatterns.psiElement(JavaDocTokenType.DOC_TAG_NAME).accepts(contextElement)) {
+        return ThreeState.NO;
+      }
+      if (contextElement.textMatches("#")) {
+        return ThreeState.NO;
+      }
     }
     return super.shouldSkipAutopopup(contextElement, psiFile, offset);
   }

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

@@ -256,6 +256,17 @@ class JavaAutoPopupTest extends CompletionAutoPopupTestCase {
     assert lookup
   }
 
+  public void "test popup after hash in javadoc"() {
+    myFixture.configureByText("a.java", """
+    /**
+    * {@link String<caret>}
+    */
+      class Foo {}
+    """)
+    type '#'
+    assert lookup
+  }
+
   public void "test popup in javadoc local reference"() {
     myFixture.configureByText("a.java", """
     /**