diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/FileSpec.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/FileSpec.kt
index 720b40c6..b8fb1304 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/FileSpec.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/FileSpec.kt
@@ -3,70 +3,87 @@ package com.beust.kobalt
 import com.beust.kobalt.misc.log
 import java.io.File
 import java.nio.file.*
-import java.nio.file.FileVisitResult.CONTINUE
 import java.nio.file.attribute.BasicFileAttributes
 import java.util.*
 
+/**
+ * Subclasses of IFileSpec can be turned into a list of files. There are two kings: FileSpec (a single file)
+ * and GlobSpec (a spec defined by a glob, e.g. ** slash *Test.class)
+ */
 sealed class IFileSpec {
-    abstract fun toFiles(directory: String): List<File>
+    abstract fun toFiles(filePath: String, excludes: List<Glob> = emptyList<Glob>()): List<File>
 
     class FileSpec(val spec: String) : IFileSpec() {
-        override public fun toFiles(directory: String) = listOf(File(spec))
+        override public fun toFiles(filePath: String, excludes: List<Glob>) = listOf(File(spec))
 
         override public fun toString() = spec
     }
 
-    class GlobSpec(val includeSpec: ArrayList<String>, val excludeSpec: ArrayList<String>) : IFileSpec() {
+    class GlobSpec(val spec: ArrayList<String>) : IFileSpec() {
 
-        constructor(spec: String) : this(arrayListOf(spec), arrayListOf())
+        constructor(spec: String) : this(arrayListOf(spec))
 
-        override public fun toFiles(directory: String): List<File> {
-
-            val result = arrayListOf<File>()
-            val includeMatchers = prepareMatchers(includeSpec.toTypedArray())
-            val excludeMatchers = prepareMatchers(excludeSpec.toTypedArray())
-
-            Files.walkFileTree(Paths.get(directory), object : SimpleFileVisitor<Path>() {
-                override public fun visitFile(path: Path, attrs: BasicFileAttributes): FileVisitResult {
-
-                    val rel = Paths.get(directory).relativize(path)
-                    excludeMatchers.forEach {
-                        if (it.matches(rel)) {
-                            log(3, "Excluding ${rel.toFile()}")
-                            return CONTINUE
-                        }
-                    }
-                    includeMatchers.forEach {
-                        if (it.matches(rel)) {
-                            log(3, "Including ${rel.toFile()}")
-                            result.add(rel.toFile())
-                            return CONTINUE
-                        }
-                    }
-
-                    return CONTINUE
+        private fun isIncluded(includeMatchers: Glob, excludes: List<Glob>, rel: Path) : Boolean {
+            excludes.forEach {
+                if (it.matches(rel)) {
+                    log(2, "Excluding ${rel.toFile()}")
+                    return false
                 }
-            })
+            }
+            if (includeMatchers.matches(rel)) {
+                log(2, "Including ${rel.toFile()}")
+                return true
+            }
+            log(2, "Excluding ${rel.toFile()} (not matching any include pattern")
+            return false
+        }
+
+        override public fun toFiles(filePath: String, excludes: List<Glob>): List<File> {
+            val result = arrayListOf<File>()
+            val includes = Glob(*spec.toTypedArray())
+
+            if (File(filePath).isDirectory) {
+                Files.walkFileTree(Paths.get(filePath), object : SimpleFileVisitor<Path>() {
+                    override public fun visitFile(path: Path, attrs: BasicFileAttributes): FileVisitResult {
+                        val rel = Paths.get(filePath).relativize(path)
+                        if (isIncluded(includes, excludes, rel)) {
+                            result.add(rel.toFile())
+                        }
+                        return FileVisitResult.CONTINUE
+                    }
+                })
+            } else {
+                if (isIncluded(includes, excludes, Paths.get(filePath))) {
+                    result.add(File(filePath))
+                }
+            }
+
             return result
         }
 
         override public fun toString(): String {
             var result = ""
-            includeSpec.apply {
+            spec.apply {
                 if (!isEmpty()) {
                     result += "Included files: " + joinToString { ", " }
                 }
             }
-            excludeSpec.apply {
-                if (!isEmpty()) {
-                    result += "Excluded files: " + joinToString { ", " }
-                }
-            }
             return result
         }
-
-        private fun prepareMatchers(specs: Array<String>): List<PathMatcher> =
-                specs.map { it -> FileSystems.getDefault().getPathMatcher("glob:$it") }
     }
 
-}
\ No newline at end of file
+}
+
+/**
+ * A Glob is a simple file name matcher.
+ */
+class Glob(vararg specs: String) {
+    val matchers = prepareMatchers(specs.toList())
+
+    private fun prepareMatchers(specs: List<String>): List<PathMatcher> =
+            specs.map { it -> FileSystems.getDefault().getPathMatcher("glob:$it") }
+
+    fun matches(s: String) = matches(Paths.get(s))
+
+    fun matches(path: Path) = matchers.any { it.matches(path) }
+}
diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
index 21a0a89b..a8d84692 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
@@ -1,9 +1,6 @@
 package com.beust.kobalt.internal
 
-import com.beust.kobalt.IFileSpec
-import com.beust.kobalt.JavaInfo
-import com.beust.kobalt.SystemProperties
-import com.beust.kobalt.TaskResult
+import com.beust.kobalt.*
 import com.beust.kobalt.api.*
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.log
@@ -29,8 +26,10 @@ abstract class GenericTestRunner : ITestRunnerContributor {
     protected fun findTestClasses(project: Project): List<String> {
         val path = KFiles.joinDir(project.directory, project.buildDirectory, KFiles.TEST_CLASSES_DIR)
 
-        val result = IFileSpec.GlobSpec(toClassPaths(project.testIncludes), toClassPaths(project.testExcludes))
-                .toFiles(path).map {
+        val result = IFileSpec.GlobSpec(toClassPaths(project.testIncludes))
+            .toFiles(path, project.testExcludes.map {
+                    Glob(it)
+                }).map {
                     it.toString().replace("/", ".").replace("\\", ".").replace(".class", "")
                 }
 
@@ -39,7 +38,7 @@ abstract class GenericTestRunner : ITestRunnerContributor {
     }
 
     private fun toClassPaths(paths: List<String>): ArrayList<String> =
-            paths.map { if (it.endsWith(".class")) it else it + ".class" }.toArrayList()
+            paths.map { if (it.endsWith("class")) it else it + "class" }.toArrayList()
 
     /**
      * @return true if all the tests passed
diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/JarUtils.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/JarUtils.kt
index 96bdda6a..637c9cba 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/JarUtils.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/JarUtils.kt
@@ -1,5 +1,6 @@
 package com.beust.kobalt.misc
 
+import com.beust.kobalt.Glob
 import com.beust.kobalt.IFileSpec
 import com.google.common.io.CharStreams
 import java.io.*
@@ -29,8 +30,7 @@ public class JarUtils {
         }
 
         private val DEFAULT_JAR_EXCLUDES =
-                IFileSpec.GlobSpec(arrayListOf(),
-                        arrayListOf("META-INF/*.SF", "META-INF/*.DSA", "META-INF/*.RSA"))
+                Glob("META-INF/*.SF", "META-INF/*.DSA", "META-INF/*.RSA")
 
         public fun addSingleFile(directory: String, file: IncludedFile, outputStream: ZipOutputStream,
                 expandJarFiles: Boolean, onError: (Exception) -> Unit = DEFAULT_HANDLER) {
diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
index 597e6c09..2a1908eb 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KFiles.kt
@@ -277,10 +277,13 @@ class KFiles {
 
         fun makeOutputTestDir(project: Project) : File = makeDir(project, KFiles.TEST_CLASSES_DIR)
 
-        fun isExcluded(file: File, excludes: IFileSpec.GlobSpec) = isExcluded(file.path, excludes)
+        fun isExcluded(file: String, excludes: Glob) = isExcluded(file, listOf(excludes))
 
-        fun isExcluded(file: String, excludes: IFileSpec.GlobSpec): Boolean =
-                excludes.toFiles(file).isEmpty()
+        fun isExcluded(file: File, excludes: Glob) = isExcluded(file.path, listOf(excludes))
+
+        fun isExcluded(file: File, excludes: List<Glob>) = isExcluded(file.path, excludes)
+
+        fun isExcluded(file: String, excludes: List<Glob>): Boolean = excludes.any { it.matches(file) }
     }
 
     fun findRecursively(directory: File, function: Function1<String, Boolean>): List<String> {
diff --git a/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt b/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
index 07b000c4..6bd233a6 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/packaging/PackagingPlugin.kt
@@ -42,8 +42,7 @@ class PackagingPlugin @Inject constructor(val dependencyManager : DependencyMana
         const val TASK_ASSEMBLE: String = "assemble"
         const val TASK_INSTALL: String = "install"
 
-
-        fun findIncludedFiles(directory: String, files: List<IncludedFile>, excludes: IFileSpec.GlobSpec)
+        fun findIncludedFiles(directory: String, files: List<IncludedFile>, excludes: List<Glob>)
                 : List<IncludedFile> {
             val result = arrayListOf<IncludedFile>()
             files.forEach { includedFile ->
@@ -312,7 +311,7 @@ class PackageConfig(val project: Project) : AttributeHolder {
 
 open class Zip(open var name: String? = null) {
 //    internal val includes = arrayListOf<IFileSpec>()
-    internal val excludes = GlobSpec(arrayListOf(), arrayListOf())
+    internal val excludes = arrayListOf<Glob>()
 
     @Directive
     public fun from(s: String) = From(s)
@@ -322,12 +321,12 @@ open class Zip(open var name: String? = null) {
 
     @Directive
     public fun exclude(vararg files: String) {
-        files.forEach { excludes.excludeSpec.add(it) }
+        files.forEach { excludes.add(Glob(it)) }
     }
 
     @Directive
-    public fun exclude(vararg specs: GlobSpec) {
-        specs.forEach { excludes.excludeSpec.addAll(it.excludeSpec) }
+    public fun exclude(vararg specs: Glob) {
+        specs.forEach { excludes.add(it) }
     }
 
     @Directive