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Sublundo

by jdkato ST3

A Sublime Text 3 package implementing Vim-like branching undo/redo.

Details

Installs

  • Total 526
  • Win 208
  • Mac 165
  • Linux 153
Mar 31 Mar 30 Mar 29 Mar 28 Mar 27 Mar 26 Mar 25 Mar 24 Mar 23 Mar 22 Mar 21 Mar 20 Mar 19 Mar 18 Mar 17 Mar 16 Mar 15 Mar 14 Mar 13 Mar 12 Mar 11 Mar 10 Mar 9 Mar 8 Mar 7 Mar 6 Mar 5 Mar 4 Mar 3 Mar 2 Mar 1 Feb 28 Feb 27 Feb 26 Feb 25 Feb 24 Feb 23 Feb 22 Feb 21 Feb 20 Feb 19 Feb 18 Feb 17 Feb 16 Feb 15
Windows 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
Mac 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
Linux 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Readme

Source
raw.​githubusercontent.​com

Sublundo Package Control

sublundo

Sublundo brings Vim-like persistent, branching undo/redo to Sublime Text 3. It was inspired by Gundo (and its successor, Mundo).

However, since Sublime Text doesn't have native support for branching undo like Vim, we had to build our own data structure—the UndoTree. An UndoTree is an N-ary tree containing nodes that represent a particular buffer state:

tree

Each node contains, among other attributes, a map associating node IDs to patches). This means that, instead of having to store the entire buffer for each insertion (which often consists of small changes), we only need to store the information necessary to travel back and forth (in both the parent → children and child → parent directions). For example: if A = 'Hello, world!' and B = 'Bye, world!', the A → B translation would be [(-1, 'H'), (1, 'By'), (0, 'e'), (-1, 'llo'), (0, ', wo')]. In Python terms, we'd have:

>>> t = UndoTree()
>>> t.insert('Hello, world!')
>>> t.insert('Bye, world!')
>>> t.text()
'Bye, world!'
>>> t.undo()
# (buffer, patch, cursor position)
('Hello, world!', '@@ -1,7 +1,9 @@\n+H\n-By\n e\n+llo\n , wo\n', None)
>>> t.text()
'Hello, world!'

Installation

  1. Install Package Control.
  2. Bring up the Command Palette (Command-Shift-P on macOS and Ctrl-Shift-P on Linux/Windows).
  3. Select Package Control: Install Package and then select Sublundo when the list appears.

Usage

This package completely overrides the built-in undo and redo commands: whenever you undo or redo an edit, the sublundo command is run instead. So, you should be able to edit, undo, and redo text as you normally would.

When you want to either visualize or navigate the UndoTree, you invoke the Sublundo: Visualize command and then use the following keys to move around:

  • up (or k): Move up the current branch (i.e., invoke redo).
  • down (or j): Move down the current branch (i.e., invoke undo).
  • left (or h): Move to the next branch on the left.
  • right (or l): Move to the next branch on the right.

For information on the available settings, see the default settings file.