code review; add test for brackets around subject name in tag

compiler/frontend/src/org/jetbrains/kotlin/kdoc/psi/impl/KDocLink.kt

@@ -22,7 +22,7 @@ public class KDocLink(node: ASTNode) : KDocElementImpl(node) {
     fun getLinkText(): String {
         val text = getText()
         if (text.startsWith('[') && text.endsWith(']')) {
-            return text.substring(1, text.length()-1)
+            return text.substring(1, text.length() - 1)
         }
         return text
     }

idea/src/org/jetbrains/kotlin/idea/kdoc/KDocRenderer.kt

@@ -42,7 +42,7 @@ fun renderKDoc(docComment: KDocTag): String {
 }
 
 private fun renderTagList(tags: List<KDocTag>, title: String, to: StringBuilder) {
-    if (tags.size() == 0) {
+    if (tags.isEmpty()) {
         return
     }
     to.append("<dl><dt><b>${title}:</b></dt>")

idea/testData/editor/quickDoc/OnMethodUsageWithBracketsInParam.kt

@@ -0,0 +1,15 @@
+/**
+ Some documentation
+
+ * @param[a] Some int
+ * @param[b] String
+ */
+fun testMethod(a: Int, b: String) {
+
+}
+
+fun test() {
+    <caret>testMethod(1, "value")
+}
+
+// INFO: <b>internal</b> <b>fun</b> testMethod(a: Int, b: String): Unit<br/><p>Some documentation<br/><br/><dl><dt><b>Parameters:</b></dt><dd><code>a</code> - Some int</dd><dd><code>b</code> - String</dd></dl></p>

idea/tests/org/jetbrains/kotlin/idea/editor/quickDoc/JetQuickDocProviderTestGenerated.java

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.idea.editor.quickDoc;
 
 import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.InnerTestClasses;
 import org.jetbrains.kotlin.test.JUnit3RunnerWithInners;
 import org.jetbrains.kotlin.test.JetTestUtils;
 import org.jetbrains.kotlin.test.TestMetadata;
@@ -107,6 +108,12 @@ public class JetQuickDocProviderTestGenerated extends AbstractJetQuickDocProvide
         doTest(fileName);
     }
 
+    @TestMetadata("OnMethodUsageWithBracketsInParam.kt")
+    public void testOnMethodUsageWithBracketsInParam() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/editor/quickDoc/OnMethodUsageWithBracketsInParam.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("OnMethodUsageWithReturnAndThrows.kt")
     public void testOnMethodUsageWithReturnAndThrows() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/editor/quickDoc/OnMethodUsageWithReturnAndThrows.kt");