Problem:    Passing limits around too often.
Solution:   Use limits from buffer.

Problem:    Cannot right shift lines starting with #.
Solution:   Allow the right shift when 'cino' contains #N with N > 0.
            (Christian Brabandt)
            Refactor parsing 'cino', store the values in the buffer.

Problem:    MS-Windows: When there is a colon in the file name (sub-stream
            feature) the swap file name is wrong.
Solution:   Change the colon to "%". (Yasuhiro Matsumoto)

Problem:    Dragging the status line can be slow.
Solution:   Look ahead and drop the drag event if there is a next one.

Problem:    Proto files are outdated.
Solution:   Update the newly generated proto files.

Problem:    Cannot complete user names.
Solution:   Add user name completion.  (Dominique Pelle)

Problem:    When joining lines comment leaders need to be removed manually.
Solution:   Add the 'j' flag to 'formatoptions'. (Lech Lorens)

(Dominique Pelle)

modified.