在我的情况下，临时文件已经被之前的操作提交了，所以修改.gitignore不会影响那些提交的文件…，你必须git rm files_to_be_ignored——先缓存，然后提交，然后DONE。

如果您正在使用源代码控制。Vim临时文件非常无用。 因此，您可能希望配置vim不创建它们。

只需编辑您的~/。Vimrc并添加这些行:

set nobackup
set noswapfile

我还建议忽略以下文件:

.*.swp
.*.swo

因为您可能有以.swp结尾的文件

# VIM: Temperory files
*~

# VIM: Swap-files
[._]*.s[a-w][a-z]
[._]s[a-w][a-z]

# VIM: Commands :cs, :ctags
tags
cscope.*

# VIM session
Session.vim

# VIM: netrw.vim: Network oriented reading, writing, browsing (eg: ftp scp) 
.netrwhist

The name of the swap file is normally the same as the file you are editing, with the extension ".swp". On Unix, a '.' is prepended to swap file names in the same directory as the edited file. This avoids that the swap file shows up in a directory listing. On MS-DOS machines and when the 'shortname' option is on, any '.' in the original file name is replaced with '_'. If this file already exists (e.g., when you are recovering from a crash) a warning is given and another extension is used, ".swo", ".swn", etc. An existing file will never be overwritten. The swap file is deleted as soon as Vim stops editing the file. The replacement of '.' with '_' is done to avoid problems with MS-DOS compatible filesystems (e.g., crossdos, multidos).

http://vimdoc.sourceforge.net/htmldoc/recover.html

http://www.vim.org/scripts/script.php?script_id=1075

我发现这会让git忽略vim创建的临时文件:

[._]*.s[a-w][a-z]
[._]s[a-w][a-z]
*.un~
Session.vim
.netrwhist
*~

也可以在这里观看。

或者，您可以配置vim以将交换文件保存到单独的位置， 例如，在你的.vimrc文件中添加如下代码行:

set backupdir=$TEMP//
set directory=$TEMP//

有关更多信息，请参阅这个vim技巧。