126 lines
5.7 KiB
Plaintext
126 lines
5.7 KiB
Plaintext
*gundo.txt* Graph your undo tree so you can actually USE it.
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CURRENT STATUS: ALPHA
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IT WILL PROBABLY EAT YOUR DATA
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SERIOUSLY: IF YOU USE THIS PLUGIN, LOSE DATA AND COMPLAIN ABOUT IT
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I AM GOING TO MAKE FUN OF YOU ON TWITTER
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Making's Vim's undo tree usable by humans.
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==============================================================================
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1. Intro *Gundo-plugin* *Gundo*
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You know that Vim lets you undo changes like any text editor. What you might
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not know is that it doesn't just keep a list of your changes -- it keeps
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a goddamed |:undo-tree| of them.
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Say you make a change (call it X), undo that change, and then make another
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change (call it Y). With most editors, change X is now gone forever. With Vim
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you can get it back.
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The problem is that trying to do this in the real world is painful. Vim gives
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you an |:undolist| command that shows you the leaves of the tree. Good luck
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finding the change you want in that list.
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Gundo is a plugin to make browsing this ridiculously powerful undo tree less
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painful.
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==============================================================================
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2. Usage *GundoUsage*
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We'll get to the technical details later, but if you're a human the first
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thing you need to do is add a mapping to your |:vimrc| to toggle the undo
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graph: >
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nnoremap <F5> :GundoToggle<CR>
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Change the mapped key to suit your taste. We'll stick with F5 because that's
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what the author uses.
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Now you can press F5 to toggle the undo graph and preview pane, which will
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look something like this: >
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Undo graph File
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+-----------------------------------+------------------------------------+
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| " Gundo for something.txt [1] |one |
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| " j/k - move between undo states |two |
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| " <cr> - revert to that state |three |
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| |five |
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| @ [5] 3 hours ago | |
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| | | |
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| | o [4] 4 hours ago | |
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| | | | |
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| o | [3] 4 hours ago | |
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| | | | |
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| o | [2] 4 hours ago | |
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| |/ | |
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| o [1] 4 hours ago | |
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| | | |
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+-----------------------------------+ |
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| --- 3 2010-10-12 06:27:35 PM | |
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| +++ 5 2010-10-12 07:38:37 PM | |
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| @@ -1,3 +1,4 | |
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| one | |
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| two | |
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| three | |
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| +five | |
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+-----------------------------------+------------------------------------+
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Preview pane
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Your current position in the undo tree is marked with an '@' character. Other
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nodes are marked with an 'o' character.
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When you toggle open the graph Gundo will put your cursor on your current
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position in the tree. You can move up and down the graph with the j and
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k keys.
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You can move to the top of the graph (the newest state) with gg and to the
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bottom of the graph (the oldest state) with G.
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As you move between undo states the preview pane will show you a unified diff
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of the change that state made.
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Pressing enter on a state will revert the contents of the file to match that
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state.
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Pressing P while on a state will initiate "play to" mode targeted at that
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state. This will replay all the changes between your current state and the
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target, with a slight pause after each change. It's mostly useless, but can be
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fun to watch and see where your editing lags -- that might be a good place to
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define a new mapping to speed up your editing.
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==============================================================================
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3. License *GundoLicense*
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GPLv2+. Look it up.
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==============================================================================
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4. Bugs *GundoBugs*
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If you find a bug please post it on the issue tracker:
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http://bitbucket.org/sjl/gundo.vim/issues?status=new&status=open
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==============================================================================
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5. Contributing *GundoContributing*
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Think you can make this plugin better? Awesome. Fork it on BitBucket or GitHub
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and send a pull request.
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BitBucket: http://bitbucket.org/sjl/gundo.vim/
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GitHub: http://github.com/sjl/gundo.vim/
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==============================================================================
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6. Credits *GundoCredits*
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The graphing code was all taken from Mercurial, hence the GPLv2+ license.
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The plugin was heavily inspired by histwin.vim, and the code for scratch.vim
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helped the author get started.
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==============================================================================
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