Enhanced WriteTag to support empty tags, and constructor declarations. Thanks to Rolf Wojtech for patch #2724894.

src/checkstyle/com/puppycrawl/tools/checkstyle/checks/javadoc/WriteTagCheck.java

@@ -89,7 +89,7 @@ public class WriteTagCheck
     {
         try {
             mTag = aTag;
-            mTagRE = Utils.getPattern(aTag + "\\s+(.*$)");
+            mTagRE = Utils.getPattern(aTag + "\\s*(.*$)");
         }
         catch (final PatternSyntaxException e) {
             throw new ConversionException("unable to parse " + aTag, e);
@@ -143,6 +143,7 @@ public class WriteTagCheck
                           TokenTypes.ENUM_DEF,
                           TokenTypes.ANNOTATION_DEF,
                           TokenTypes.METHOD_DEF,
+                          TokenTypes.CTOR_DEF,
                           TokenTypes.ENUM_CONSTANT_DEF,
                           TokenTypes.ANNOTATION_FIELD_DEF,
         };

src/testinputs/com/puppycrawl/tools/checkstyle/InputWriteTag.java

@@ -11,9 +11,17 @@ package com.puppycrawl.tools.checkstyle;
  * @incomplete This class needs more code...
  * @doubletag first text
  * @doubletag second text
+ * @emptytag
  */
 class InputWriteTag
 {
+	/**
+	 * @todo Add a constructor comment
+	 */
+	public InputWriteTag()
+	{	
+	}
+	
     public void method()
     {
     }

src/tests/com/puppycrawl/tools/checkstyle/checks/javadoc/WriteTagCheckTest.java

@@ -84,6 +84,18 @@ public class WriteTagCheckTest extends BaseCheckTestSupport
       };
       verify(mCheckConfig, getPath("InputWriteTag.java"), expected);
     }
+    
+    @Test
+    public void testEmptyTag() throws Exception
+    {
+      mCheckConfig.addAttribute("tag", "@emptytag");
+      mCheckConfig.addAttribute("tagFormat", "");
+      final String[] expected =
+      {
+          "14: @emptytag=",
+      };
+      verify(mCheckConfig, getPath("InputWriteTag.java"), expected);
+    }
 
 
     @Test
@@ -92,7 +104,7 @@ public class WriteTagCheckTest extends BaseCheckTestSupport
         mCheckConfig.addAttribute("tag", "@missingtag");
         final String[] expected =
         {
-            "15: Type Javadoc comment is missing an @missingtag tag.",
+            "16: Type Javadoc comment is missing an @missingtag tag.",
         };
         verify(mCheckConfig, getPath("InputWriteTag.java"), expected);
     }
@@ -103,11 +115,12 @@ public class WriteTagCheckTest extends BaseCheckTestSupport
         mCheckConfig.addAttribute("tag", "@todo");
         mCheckConfig.addAttribute("tagFormat", "\\S");
         mCheckConfig.addAttribute("tokens",
-            "INTERFACE_DEF, CLASS_DEF, METHOD_DEF");
+            "INTERFACE_DEF, CLASS_DEF, METHOD_DEF, CTOR_DEF");
         mCheckConfig.addAttribute("severity", "ignore");
         final String[] expected =
         {
-            "22: @todo=Add a comment",
+        	"19: @todo=Add a constructor comment",
+            "30: @todo=Add a comment",
         };
         verify(mCheckConfig, getPath("InputWriteTag.java"), expected);
     }

src/xdocs/releasenotes.xml

@@ -17,6 +17,11 @@
           to support properties to ignore constructors, methods and modifiers.
           Thanks to Steve McKay for patch #2953941.
         </li>
+        <li>
+          Enhanced <a href="config_javadoc.html#WriteTag">WriteTag</a>
+          to support empty tags, and constructor declarations.
+          Thanks to Rolf Wojtech for patch #2724894.
+        </li>
       </ul>
       <p>Bug fixes:</p>
       <ul>