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