Forgot simple case.

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/TaskManager.kt

@@ -187,6 +187,14 @@ class TaskManager @Inject constructor(val args: Args,
             val toProcess = ArrayList(allTaskInfos)
             val seen = HashSet(allTaskInfos)
             val newTasks = hashSetOf<TaskInfo>()
+
+            fun maybeAdd(taskInfo: TaskInfo) {
+                if (!seen.contains(taskInfo)) {
+                    newTasks.add(taskInfo)
+                    seen.add(taskInfo)
+                }
+            }
+
             while (toProcess.any()) {
                 toProcess.forEach { ti ->
                     val project = projectMap[ti.project]
@@ -197,15 +205,17 @@ class TaskManager @Inject constructor(val args: Args,
                                 val tiDep = TaskInfo(depProject.name, ti.taskName)
                                 allTaskInfos.add(tiDep)
                                 addEdge(ti, tiDep)
-                                if (!seen.contains(tiDep)) {
+                                maybeAdd(tiDep)
-                                    newTasks.add(tiDep)
-                                    seen.add(tiDep)
-                                }
                             }
                         } else {
                             allTaskInfos.add(ti)
                             addNode(ti)
                         }
+                    } else {
+                        // No project specified for this task, run that task in all the projects
+                        projects.forEach {
+                            maybeAdd(TaskInfo(it.name, ti.taskName))
+                        }
                     }
                 }
                 toProcess.clear()

src/test/kotlin/com/beust/kobalt/internal/BuildOrderTest.kt

@@ -20,6 +20,7 @@ class BuildOrderTest @Inject constructor(val taskManager: TaskManager) {
     @DataProvider
     fun tasks(): Array<Array<out Any>> {
         return arrayOf(
+            arrayOf(listOf("assemble"), listOf("p1:assemble", "p2:assemble", "p3:assemble")),
             arrayOf(listOf("p1:assemble"), listOf("p1:assemble")),
             arrayOf(listOf("p2:assemble"), listOf("p1:assemble", "p2:assemble")),
             arrayOf(listOf("p3:assemble"), listOf("p1:assemble", "p2:assemble", "p3:assemble"))