Vim 使用 ruby​​ 语法高亮显示很慢 [英] Vim slow with ruby syntax highlighting

问题描述

我已经在 ssh 上使用 vim 工作了一两个星期，一切都很顺利.今天我决定添加一些语法高亮、自动完成和其他一些通用插件.设置 vundle 并开始工作.

I've been using vim over ssh to work for a week or two now and all has been going great. Today I decided to add in some syntax highlighting, autocomplete, and some other general plugins. Set up vundle and went to work.

我当前的 .vimrc 可以在 https://github 上找到.com/scotopell/dotfiles/blob/master/.vimrc

我已将我的 vimrc 和 vim 文件克隆到我的本地 ubuntu 桌面，vim 完全按预期运行，我可以找到的任何文件都没有变慢.相同的插件和相同的 vimrc 并且在 ruby​​ 文件上没有缓慢.

I have cloned my vimrc and vim files onto my local ubuntu desktop and vim runs exactly as expected, no slowness on any files that I can find. Same plugins and same vimrc and no slowness on ruby files.

更新

我可以用下面的 .vimrc 重现这个问题

I can reproduce this issue with the following .vimrc

syntax on

和一个空的 ~/.vim 文件夹.

and an empty ~/.vim folder.

然而，这个 vps 上的 vim 对于 ruby​​/haml 文件非常慢.更多红宝石文件.当我打开任何 ruby​​ 文件时，启动大约需要 2 秒(用 --startuptime 计时).使用可比长度的haml 文件，大约需要0.5 秒.这种缓慢不仅仅是在启动时，移动和编辑文件都非常缓慢.

However, vim on this vps is very slow with ruby/haml files. Much moreso ruby files. When I open any ruby file, startup takes about 2 seconds (timed with --startuptime). With a comparable length haml file, its about .5 seconds. This slowness isn't just on startup either, moving around and editing the file are both painfully slow.

Haml/erb(它们基本相同)

Haml/erb(they are basically the same)

268.818  000.005: before starting main loop
848.871  580.053: first screen update

红宝石

199.613  000.004: before starting main loop
2937.859  2738.246: first screen update

在同一个 ruby​​ 文件上没有语法高亮

Without syntax highlighting on the same ruby file as above

149.047  000.004: before starting main loop
152.912  003.865: first screen update 

我试过使用 mosh(http://mosh.mit.edu) 并且它没有没有帮助.不再相关

I have tried using mosh(http://mosh.mit.edu) and it doesn't help. not really relevant anymore

正如你在我的 .vimrc 文件中看到的，我已经尝试了几种不同的解决方案来解决这个问题.我试过在禁用所有插件的情况下运行(我将它们从 ~/vim/bundle/PLUGINNAME 移动到 ~/vim/bundle/disabled/PLUGINNAME，这是正确的吗?)，设置 ruby​​ 路径，将 foldlevel 设置为手动，禁用我的颜色方案，没有任何帮助.见edit3

As you can see in my .vimrc file, I have tried a few different solutions to this problem. I have tried running with all plugins disabled (I moved them all from ~/vim/bundle/PLUGINNAME to ~/vim/bundle/disabled/PLUGINNAME, is this correct?), set ruby path, set foldlevel to manual, disabled my colorscheme, nothing helps. see edit3

如果有帮助，我可以发布任何文件的完整启动时间日志.
我测试了一些其他语言(php、c、python、vimL)，但没有遇到任何减速.

I can post the full startupttime log for any file if that will help.
I have tested a few other languages(php, c, python, vimL) and none experience any slowdown.

只是为了澄清一下，我正在使用 ssh user@server 运行 ssh 会话，然后一旦进入服务器，我正在执行 vim file.rb.

Just to clarify, I am running an ssh session with ssh user@server then once inside the server I am doing vim file.rb.

我只是尝试直接访问服务器，但在没有 ssh 的情况下缓慢仍然存在，我已更新以反映这不是 ssh 的问题.

I just tried accessing the server directly and the slowness persists without ssh, I have updated to reflect that this isn't a problem with ssh.

我可以用一个 .vimrc 文件重现这个问题，该文件包含单行 syntax on 和一个空的 ~/.vim 文件夹

I can reproduce the issue with a .vimrc file that contains the single line syntax on with an empty ~/.vim folder

EDIT4 我卸载了我编译的 vim 版本以及我可能通过 apt 安装的任何版本，手动从我的系统中删除了所有 vim 内容，然后我可以使用 vim -u 运行 vimNONE/path/to/file.rb 然后执行 :syn on 问题就会出现.有问题的文件是一个 rails 控制器，但正如我所说，我可以在某种程度上用大多数文件重新创建它，但 rails 控制器看起来是最糟糕的.

EDIT4 I uninstalled my compiled version of vim and any versions that I may have installed through apt, manually removed all vim stuff from my system, and I can run vim with vim -u NONE /path/to/file.rb then do :syn on and the issue will be there. The file in question is a rails controller, but like I've said, I can recreate it to some degree with most any file, but rails controllers see to be the worst.

推荐答案

这个问题的解决方案原来是 vim 使用的正则表达式引擎.关于 freenode 上 #vim 的猜测是 ruby​​ 语法文件在新的正则表达式引擎上使用了较慢的东西.

The solution to this problem turned out to be the regex engine that vim uses. The speculation on #vim on freenode is that the ruby syntax files use something that is slower on the new regex engine.

任何早于并包括 Vim 7.3.969 的版本都有旧的正则表达式引擎.将 set re=1 添加到您的 vimrc 以在任何更新的版本上强制使用旧的正则表达式引擎(不要忘记重新加载您当前正在编辑的文件 vimrc代码>:e).

Any version older than and including Vim 7.3.969 has the old regex engine. Add in set re=1 to your vimrc to force the old regex engine on any version newer (and don't forget to reload the file you're currently editing with :e).

感谢来自 #vim 的 Houl、Dolio 和 dmedvinsky 帮助解决这个问题.

Thanks to Houl, Dolio and dmedvinsky from #vim for help figuring it out.

我还没有机会尝试绝对最新的版本，昨晚有一个提交可能有助于解决这个问题.如果我有机会再次尝试最前沿的版本，我会更新这个.

I haven't had a chance to try the absolute latest version, there was a commit last night that may help with this issue. I will update this if I get the chance to try the bleeding edge version again.

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