1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
4 <maintainer type="project">
5 <email>gnu-emacs@gentoo.org</email>
6 <name>Gentoo GNU Emacs project</name>
8 <longdescription lang="en">
9 Emacs has a powerful undo system. Unlike the standard undo/redo system in
10 most software, it allows you to recover *any* past state of a buffer
11 (whereas the standard undo/redo system can lose past states as soon as you
12 redo). However, this power comes at a price: many people find Emacs' undo
13 system confusing and difficult to use, spawning a number of packages that
14 replace it with the less powerful but more intuitive undo/redo system.
16 Both the loss of data with standard undo/redo, and the confusion of Emacs'
17 undo, stem from trying to treat undo history as a linear sequence of
18 changes. It's not. The `undo-tree-mode' provided by this package replaces
19 Emacs' undo system with a system that treats undo history as what it is: a
20 branching tree of changes. This simple idea allows the more intuitive
21 behaviour of the standard undo/redo system to be combined with the power of
22 never losing any history. An added side bonus is that undo history can in
23 some cases be stored more efficiently, allowing more changes to accumulate
24 before Emacs starts discarding history.
26 The only downside to this more advanced yet simpler undo system is that it
27 was inspired by Vim. But, after all, most successful religions steal the
28 best ideas from their competitors!
30 <stabilize-allarches/>