Fix parsing Rebase todo lines when commit message is missing

Bug: 422253
Change-Id: I9739b16c91d2df31a481360a712d3479a4eeee2e
Signed-off-by: Stefan Lay <stefan.lay@sap.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/api/RebaseCommandTest.java

@@ -1641,6 +1641,19 @@ public class RebaseCommandTest extends RepositoryTestCase {
 		assertEquals("2222222", steps.get(1).getCommit().name());
 	}
 
+	@Test
+	public void testRebaseShouldBeAbleToHandleLinesWithoutCommitMessageInRebaseTodoFile()
+			throws IOException {
+		String todo = "pick 1111111 \n" + "pick 2222222 Commit 2\n"
+				+ "# Comment line at end\n";
+		write(getTodoFile(), todo);
+
+		List<RebaseTodoLine> steps = db.readRebaseTodo(GIT_REBASE_TODO, false);
+		assertEquals(2, steps.size());
+		assertEquals("1111111", steps.get(0).getCommit().name());
+		assertEquals("2222222", steps.get(1).getCommit().name());
+	}
+
 	@Test
 	public void testRebaseShouldNotFailIfUserAddCommentLinesInPrepareSteps()
 			throws Exception {

org.eclipse.jgit/src/org/eclipse/jgit/lib/RebaseTodoFile.java

@@ -197,6 +197,8 @@ public class RebaseTodoFile {
 			}
 			tokenCount++;
 		}
+		if (tokenCount == 2)
+			return new RebaseTodoLine(action, commit, ""); //$NON-NLS-1$
 		return null;
 	}