vim-patch:7.4.215

Problem:  Inconsistency: ":sp foo" does not reload "foo", unless "foo"
          is the current buffer. (Liang Li)

Solution: Do not reload the current buffer on a split command.
vim-patch:7.4.218

Problem:  It's not easy to remove duplicates from a list.

Solution: Add the uniq() function. (LCD)