IDEA-141461 Quick Documentation viewer: for javdocs inside jars, internal relative links to pages in the same jar don't work

java/java-impl/src/com/intellij/codeInsight/javadoc/JavaDocExternalFilter.java

@@ -120,7 +120,7 @@ public class JavaDocExternalFilter extends AbstractExternalFilter {
   @Override
   @Nullable
    public String getExternalDocInfoForElement(@NotNull String docURL, final PsiElement element) throws Exception {
-    CharSequence externalDoc = null;
+    String externalDoc = null;
     String builtInServer = "http://localhost:" + BuiltInServerOptions.getInstance().getEffectiveBuiltInServerPort() + "/" + myProject.getName() + "/";
     if (docURL.startsWith(builtInServer)) {
       int refPosition = docURL.lastIndexOf('#');
@@ -137,7 +137,7 @@ public class JavaDocExternalFilter extends AbstractExternalFilter {
           reader.close();
         }
 
-        externalDoc = result;
+        externalDoc = correctDocText(docURL, result);
       }
     }
 
@@ -165,7 +165,7 @@ public class JavaDocExternalFilter extends AbstractExternalFilter {
       DocumentationManager.createHyperlink(buffer, className, className, false);
       return matcher.replaceFirst(buffer.append("</h3>").toString());
     }
-    return externalDoc.toString();
+    return externalDoc;
   }
 
   @NotNull

java/java-tests/testData/codeInsight/documentation/ReferenceStyleDoesntMatchBytecodeVersion.html

@@ -17,7 +17,7 @@
 <ul class="blockListLast">
 <h3><a href="psi_element://com.jetbrains.TestAnnotation"><code>com.jetbrains.TestAnnotation</code></a></h3>
 <pre>public abstract&nbsp;java.lang.String&nbsp;param</pre>
-<div class="block">Some info</div>
+<div class="block">Some info and a <a href="psi_element://com.jetbrains.Test">link</a></div>
 </li>
 </ul>
 </li>