Fix adding entry in jump list, when it doesn't.

[backdround]

When do opening file which is opened already, then nothing happens as expected. But entry in jump list doesn't added also. So we just add it manualy.

[dyng]

Sorry for this late review.

I have tested this branch, it works well but has some little problem. I found that saved entry is not exactly right (the line number is correct but column number isn't). Could you find a way to fix it?