Undo as a Tree

g- and g+ walk by time. :undolist shows the branches.

Keys: u, Ctrl-R, g-, g+

Vim's undo isn't a stack — it's a tree. Every undo branch is preserved. g- and g+ walk by chronological time; :undolist shows all branches; :earlier/:later jump by time intervals.

In most editors, undo is a stack: redo a mistake, the original is gone forever. In Vim, undo is a tree — every branch is kept.

See also: Undo and Redo