IDEA-87409 Issue tracker settings - {number} placeholder doesn't work properly

plugins/tasks/tasks-api/src/com/intellij/tasks/Task.java

@@ -107,13 +107,13 @@ public abstract class Task {
 
   @Nullable
   public String getNumber() {
-    String[] split = getId().split("\\-");
-    return split.length > 1 ? split[1] : null;
+    int i = getId().lastIndexOf('-');
+    return i > 0 ? getId().substring(i + 1) : getId();
   }
 
   @Nullable
   public String getProject() {
-    String[] split = getId().split("\\-");
-    return split.length > 1 ? split[0] : null;
+    int i = getId().lastIndexOf('-');
+    return i > 0 ? getId().substring(0, i) : null;
   }
 }

plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskVcsTest.java

@@ -89,6 +89,37 @@ public class TaskVcsTest extends TaskManagerTestCase {
     assertNotNull(associatedTask); // association should survive
   }
 
+  public void testProjectWithDash() throws Exception {
+    LocalTaskImpl task = new LocalTaskImpl("foo-bar-001", "summary") {
+      @Override
+      public TaskRepository getRepository() {
+        return myRepository;
+      }
+    };
+    assertEquals("foo-bar", task.getProject());
+    assertEquals("001", task.getNumber());
+    String name = myManager.getChangelistName(task);
+    assertEquals("foo-bar-001 summary", name);
+  }
+
+  public void testIds() throws Exception {
+    LocalTaskImpl task = new LocalTaskImpl("", "");
+    assertEquals("", task.getNumber());
+    assertEquals(null, task.getProject());
+
+    task = new LocalTaskImpl("-", "");
+    assertEquals("-", task.getNumber());
+    assertEquals(null, task.getProject());
+
+    task = new LocalTaskImpl("foo", "");
+    assertEquals("foo", task.getNumber());
+    assertEquals(null, task.getProject());
+
+    task = new LocalTaskImpl("112", "");
+    assertEquals("112", task.getNumber());
+    assertEquals(null, task.getProject());
+  }
+
   private void createChangelist(LocalTask localTask) throws InterruptedException {
     clearChangeLists();
     if (localTask.isActive()) {