使用 Vim 的持久撤销? [英] Using Vim's persistent undo?

问题描述

Vim 7.3 中的一项新功能是持久撤消"，它允许在退出缓冲区时将撤消树保存到文件中.

One of the new features in Vim 7.3 is 'persistent undo', which allows for the undotree to be saved to a file when exiting a buffer.

不幸的是，我还没有完全能够正确启用它，或者我一定是用错了它.这是我迄今为止尝试过的:

Unfortunately, I haven't quite been able to get it properly enabled, or I must be using it wrong. Here's what I've tried so far:

我将以下内容添加到 ~/.vimrc

I added the following to ~/.vimrc

set undofile                " Save undos after file closes
set undodir=$HOME/.vim/undo " where to save undo histories
set undolevels=1000         " How many undos
set undoreload=10000        " number of lines to save for undo

在此之后，我应该能够打开任何文件，编辑它，然后保存关闭它，当我再次打开它时，我应该能够撤消/重做，就好像我从未离开过一样.不幸的是，情况似乎并非如此，因为从来没有写过撤消文件.

After this, I supposedly should be able to open any file, edit it, then save-close it, and when I open it again I should be able to undo/redo as if I'd never left. Unfortunately, this doesn't seem to be the case, as no undofile is ever written.

注意事项:

1. 我正在使用来自 Vim without cream 项目的 Vim 7.3 的 Win 7.持久性撤消已内置.

1. I'm on Win 7 using Vim 7.3 from the Vim without cream project. Persistent undo is baked-in.

$HOME/.vim/undo 存在于我的文件系统中

$HOME/.vim/undo exists on my file system

推荐答案

把它放在你的 .vimrc 中以创建一个 undodir 如果它不存在并启用持久化撤消.在 Windows 和 Linux 上均已测试.

Put this in your .vimrc to create an undodir if it doesn't exist and enable persistent undo. Tested on both Windows and Linux.

" Put plugins and dictionaries in this dir (also on Windows)
let vimDir = '$HOME/.vim'

if stridx(&runtimepath, expand(vimDir)) == -1
  " vimDir is not on runtimepath, add it
  let &runtimepath.=','.vimDir
endif

" Keep undo history across sessions by storing it in a file
if has('persistent_undo')
    let myUndoDir = expand(vimDir . '/undodir')
    " Create dirs
    call system('mkdir ' . vimDir)
    call system('mkdir ' . myUndoDir)
    let &undodir = myUndoDir
    set undofile
endif

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