vim 7+ keeps an ‘undo tree’ that permits this (it can also be instructed to keep it in a file to persist across sessions). It’s helpful to install a visualizati

vim 7+ keeps an ‘undo tree’ that permits this (it can also be instructed to keep it in a file to persist across sessions). It’s helpful to install a visualization extension to seek around easier (https://stackoverflow.com/questions/1088864/how-is-vims-undo-tree-used https://stackoverflow.com/questions/1088864/how-is-vims-undo...)