If invoker.test contains only exclude pattern (expression starts with…

… '!'), include pattern is added automatically

src/it/invocation-cmdline-exclude/src/it/minvoker-140-executable/pom.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.apache.maven.plugins.invoker.its</groupId>
+  <artifactId>minvoker-138</artifactId>
+  <version>0.1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>1.1.1</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <AlwaysPass/>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

src/it/invocation-cmdline-exclude/test.properties

@@ -15,4 +15,4 @@
 # specific language governing permissions and limitations
 # under the License.
 
-invoker.test = !minvoker-140
+invoker.test = !*-ignorable

src/it/invocation-cmdline-exclude/verify.bsh

@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.*;
+import java.util.*;
+import java.util.regex.*;
+
+import org.codehaus.plexus.util.*;
+
+try
+{
+    File executableProjectReport = new File( basedir, "target/invoker-reports/BUILD-minvoker-140-executable.xml" );
+    System.out.println( "Checking for existence of minvoker-140-executable report file: " + executableProjectReport );
+    if ( !executableProjectReport.exists() )
+    {
+        System.out.println( "FAILED!" );
+        return false;
+    }
+
+    File ignorableProjectReport = new File( basedir, "target/invoker-reports/BUILD-minvoker-140-ignorable.xml" );
+    System.out.println( "Checking for non-existence of minvoker-140-ignorable report file: " + ignorableProjectReport );
+    if ( ignorableProjectReport.exists() )
+    {
+        System.out.println( "FAILED!" );
+        return false;
+    }
+}
+catch( Throwable t )
+{
+    t.printStackTrace();
+    return false;
+}
+
+return true;

src/main/java/org/apache/maven/plugins/invoker/AbstractInvokerMojo.java

@@ -2431,6 +2431,10 @@ private List<BuildJob> scanProjectsDirectory( List<String> includes, List<String
         }
         if ( excludes != null )
         {
+            if ( ( includes == null || includes.isEmpty() ) && !excludes.isEmpty() )
+            {
+                scanner.setIncludes( new String[] { "*" } );
+            }
             scanner.setExcludes( excludes.toArray( new String[0] ) );
         }
         scanner.addDefaultExcludes();