Index: extra-targets.xml
===================================================================
--- extra-targets.xml	(revision 1388769)
+++ extra-targets.xml	(working copy)
@@ -59,60 +59,59 @@
     </mvn>
   </target>
 
-  <target xmlns:ivy="antlib:org.apache.ivy.ant" name="check-svn-working-copy" depends="ivy-availability-check,ivy-fail,ivy-configure">
+  <target xmlns:ivy="antlib:org.apache.ivy.ant" name="check-svn-working-copy" depends="ivy-availability-check,ivy-fail,ivy-configure,resolve-groovy">
     <ivy:cachepath organisation="org.tmatesoft.svnkit" module="svnkit" revision="1.7.5-v1"
       inline="true" conf="default" type="jar" transitive="true" pathid="svnkit.classpath"/>
-    <script language="javascript" classpathref="svnkit.classpath" taskname="svn"><![CDATA[
-      importClass(java.io.File);
-      importClass(java.util.TreeSet);
-      importPackage(org.tmatesoft.svn.core);
-      importPackage(org.tmatesoft.svn.core.wc);
-      var manager = SVNClientManager.newInstance();
-      var statusClient = manager.getStatusClient();
-      var wcClient = manager.getWCClient();
+    <script language="groovy" taskname="svn">
+      <classpath>
+        <path refid="groovy.classpath"/>
+        <path refid="svnkit.classpath"/>
+      </classpath><![CDATA[
+      import org.tmatesoft.svn.core.*;
+      import org.tmatesoft.svn.core.wc.*;
       
-      var basedir = new File(project.getProperty("basedir")).getAbsoluteFile();
-      var baseLen = basedir.toString().length();
-      var convertRelative = function(file) {
-        return file.getAbsolutePath().substring(baseLen + 1).replace(File.separatorChar, '/');
+      SVNClientManager manager = SVNClientManager.newInstance();
+      SVNStatusClient statusClient = manager.getStatusClient();
+      SVNWCClient wcClient = manager.getWCClient();
+      
+      File basedir = new File(project.getProperty('basedir')).getAbsoluteFile();
+      int baseLen = basedir.toString().length();
+      def convertRelative = {
+        file -> file.getAbsolutePath().substring(baseLen + 1).replace(File.separatorChar, (char)'/');
       }
       
-      var missingProps = new TreeSet(), unversioned = new TreeSet();
+      Set missingProps = new TreeSet(), unversioned = new TreeSet();
 
-      self.log("Getting all versioned and unversioned files...");
-      statusClient.doStatus(basedir, SVNRevision.WORKING, SVNDepth.fromRecurse(true), false, true, false, false, new ISVNStatusHandler({
-        handleStatus: function(status) {
-          var nodeStatus = status.getNodeStatus();
-          if (nodeStatus == SVNStatusType.STATUS_UNVERSIONED) {
-            unversioned.add(convertRelative(status.getFile()));
-          } else if (status.getKind() == SVNNodeKind.FILE && nodeStatus != SVNStatusType.STATUS_DELETED) {
-            missingProps.add(convertRelative(status.getFile()));
-          }
+      self.log('Getting all versioned and unversioned files...');
+      statusClient.doStatus(basedir, SVNRevision.WORKING, SVNDepth.fromRecurse(true), false, true, false, false, {
+        status ->
+        SVNStatusType nodeStatus = status.getNodeStatus();
+        if (nodeStatus == SVNStatusType.STATUS_UNVERSIONED) {
+          unversioned.add(convertRelative(status.getFile()));
+        } else if (status.getKind() == SVNNodeKind.FILE && nodeStatus != SVNStatusType.STATUS_DELETED) {
+          missingProps.add(convertRelative(status.getFile()));
         }
-      }), null);
+      } as ISVNStatusHandler, null);
 
-      self.log("Filtering files with existing svn:eol-style...");
-      wcClient.doGetProperty(basedir, "svn:eol-style", SVNRevision.WORKING, SVNRevision.WORKING, true, new ISVNPropertyHandler({
-        handleProperty: function(file, prop) {
+      self.log('Filtering files with existing svn:eol-style...');
+      wcClient.doGetProperty(basedir, 'svn:eol-style', SVNRevision.WORKING, SVNRevision.WORKING, true, {
+        file, prop -> missingProps.remove(convertRelative(file));
+      } as ISVNPropertyHandler);
+      
+      self.log('Filtering files with binary svn:mime-type...');
+      wcClient.doGetProperty(basedir, 'svn:mime-type', SVNRevision.WORKING, SVNRevision.WORKING, true, {
+        file, prop ->
+        prop = SVNPropertyValue.getPropertyAsString(prop.getValue());
+        if (prop.startsWith('application/') || prop.startsWith('image/')) {
           missingProps.remove(convertRelative(file));
         }
-      }));
+      } as ISVNPropertyHandler);
       
-      self.log("Filtering files with binary svn:mime-type...");
-      wcClient.doGetProperty(basedir, "svn:mime-type", SVNRevision.WORKING, SVNRevision.WORKING, true, new ISVNPropertyHandler({
-        handleProperty: function(file, prop) {
-          prop = SVNPropertyValue.getPropertyAsString(prop.getValue());
-          if (prop.startsWith("application/") || prop.startsWith("image/")) {
-            missingProps.remove(convertRelative(file));
-          }
-        }
-      }));
-      
-      var convertSet2String = function(set) {
-        return set.isEmpty() ? null : ("* " + set.toArray().join(project.getProperty("line.separator") + "* "))
+      def convertSet2String = {
+        set -> set.isEmpty() ? null : ('* ' + set.toArray().join(project.getProperty('line.separator') + '* '))
       };
-      project.setProperty("svn.checkprops.failed", convertSet2String(missingProps));
-      project.setProperty("svn.unversioned.failed", convertSet2String(unversioned));
+      project.setProperty('svn.checkprops.failed', convertSet2String(missingProps));
+      project.setProperty('svn.unversioned.failed', convertSet2String(unversioned));
     ]]></script>
     <fail if="svn.checkprops.failed"
       message="The following files are missing svn:eol-style (or binary svn:mime-type):${line.separator}${svn.checkprops.failed}"/>
Index: lucene/build.xml
===================================================================
--- lucene/build.xml	(revision 1388769)
+++ lucene/build.xml	(working copy)
@@ -269,7 +269,7 @@
     </sequential>
   </target>
   
-  <target name="process-webpages" depends="resolve-pegdown">
+  <target name="process-webpages" depends="resolve-groovy,resolve-pegdown">
     <makeurl property="process-webpages.buildfiles" separator="|">
       <fileset dir="." includes="**/build.xml" excludes="build.xml,analysis/*,build/**,tools/**,backwards/**,site/**"/>
     </makeurl>
Index: lucene/common-build.xml
===================================================================
--- lucene/common-build.xml	(revision 1388769)
+++ lucene/common-build.xml	(working copy)
@@ -240,6 +240,7 @@
     <propertyref regex=".*\.uptodate$$"/>
     <propertyref regex=".*\.compiled$$"/>
     <propertyref regex=".*\.loaded$$"/>
+    <propertyref name="lucene.javadoc.url"/><!-- for Solr -->
   </propertyset>
 
   <patternset id="lucene.local.src.package.patterns"
@@ -1750,6 +1751,13 @@
     </sequential>
   </macrodef>
   
+  <!-- GROOVY scripting engine for ANT tasks -->
+  <target name="resolve-groovy" unless="groovy.loaded" depends="ivy-availability-check,ivy-fail,ivy-configure">
+    <ivy:cachepath organisation="org.codehaus.groovy" module="groovy-all" revision="2.0.4"
+      inline="true" conf="default" type="jar" transitive="true" pathid="groovy.classpath"/>
+    <property name="groovy.loaded" value="true"/>
+  </target>
+  
   <!-- PEGDOWN macro: Before using depend on the target "resolve-pegdown" -->
   
   <target name="resolve-pegdown" unless="pegdown.loaded" depends="ivy-availability-check,ivy-fail,ivy-configure">
@@ -1771,24 +1779,25 @@
           <tokenfilter>
             <filetokenizer/>
             <replaceregex pattern="\b(LUCENE|SOLR)\-\d+\b" replace="[\0](https://issues.apache.org/jira/browse/\0)" flags="gs"/>
-            <scriptfilter language="javascript" classpathref="pegdown.classpath"><![CDATA[
-              importClass(java.lang.StringBuilder);
-              importClass(org.pegdown.PegDownProcessor);
-              importClass(org.pegdown.Extensions);
-              importClass(org.pegdown.FastEncoder);
-              var markdownSource = self.getToken();
-              var title = undefined;
-              // match the first heading in markdown and use as title:
-              if (markdownSource.search(/^#+\s*(.+)$/m) >= 0) {
-                title = RegExp.$1;
-              }
-              var processor = new PegDownProcessor(
+            <scriptfilter language="groovy">
+              <classpath>
+                <path refid="groovy.classpath"/>
+                <path refid="pegdown.classpath"/>
+              </classpath><![CDATA[
+              import org.pegdown.PegDownProcessor;
+              import org.pegdown.Extensions;
+              import org.pegdown.FastEncoder;
+              
+              String markdownSource = self.getToken();
+              PegDownProcessor processor = new PegDownProcessor(
                 Extensions.ABBREVIATIONS | Extensions.AUTOLINKS |
                 Extensions.FENCED_CODE_BLOCKS | Extensions.SMARTS
               );
-              var html = new StringBuilder('<html>\n<head>\n');
-              if (title) {
-                html.append('<title>').append(FastEncoder.encode(title)).append('</title>\n');
+              StringBuilder html = new StringBuilder('<html>\n<head>\n');
+              // match the first heading in markdown and use as title:
+              def matcher = (markdownSource =~ /(?m)^#+\s*(.+)$/);
+              if (matcher.find()) {
+                html.append('<title>').append(FastEncoder.encode(matcher.group(1))).append('</title>\n');
               }
               html.append('<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">\n')
                 .append('</head>\n<body>\n')
Index: solr/build.xml
===================================================================
--- solr/build.xml	(revision 1388769)
+++ solr/build.xml	(working copy)
@@ -138,12 +138,12 @@
   <target name="compile-test" description="Compile unit tests."
           depends="compile-solr-test-framework, compile-test-solr-core, compile-test-solrj, compile-test-contrib"/>
   <target name="javadocs" description="Calls javadocs-all, javadocs-solrj, and javadocs-test-framework"
-          depends="javadocs-solr-core,javadocs-solrj,javadocs-test-framework,javadocs-contrib"/>
+          depends="define-lucene-javadoc-url,javadocs-solr-core,javadocs-solrj,javadocs-test-framework,javadocs-contrib"/>
   <target name="documentation" description="Generate all documentation"
     depends="javadocs,changes-to-html,process-webpages"/>
   <target name="compile-core" depends="compile-solr-core" unless="solr.core.compiled"/>
   
-  <target name="process-webpages" depends="define-lucene-javadoc-url"> <!--depends="resolve-pegdown">-->
+  <target name="process-webpages" depends="define-lucene-javadoc-url"><!--depends="resolve-groovy,resolve-pegdown">-->
     <makeurl property="process-webpages.buildfiles" separator="|">
       <fileset dir="." includes="core/build.xml,test-framework/build.xml,solrj/build.xml,contrib/**/build.xml"/>
     </makeurl>
@@ -505,10 +505,6 @@
     <sign-artifacts-macro artifacts.dir="${package.dir}"/>
   </target>
  
-  <target name="javadocs-dep">
-    <!-- NOOP -->
-  </target>
-
   <target name="resolve" depends="resolve-example">
      <sequential>
      <ant dir="core" target="resolve" inheritall="false">
Index: solr/common-build.xml
===================================================================
--- solr/common-build.xml	(revision 1388769)
+++ solr/common-build.xml	(working copy)
@@ -275,17 +275,17 @@
     </sequential>
   </macrodef>
 
-  <target name="define-lucene-javadoc-url" unless="lucene.javadoc.url">
-    <script language="javascript"><![CDATA[
-      var url, version = project.getProperty('version');
+  <target name="define-lucene-javadoc-url" depends="resolve-groovy" unless="lucene.javadoc.url">
+    <script language="groovy" classpathref="groovy.classpath"><![CDATA[
+      String url, version = project.getProperty('version');
       if (version.contains('-SNAPSHOT')) {
-        importClass(java.io.File);
         url = new File(project.getProperty('common.dir'), 'build' + File.separator + 'docs').toURI().toASCIIString();
-        if (!(/\/$/.test(url))) url += '/';
+        if (!(url =~ /\/$/)) url += '/';
       } else {
         version = version.replace('.', '_');
         url = 'http://lucene.apache.org/core/' + version + '/';
       }
+      self.log('Using the following URL to refer to Lucene Javadocs: ' + url);
       project.setProperty('lucene.javadoc.url', url);
     ]]></script>
   </target>