vim设置新文件扩展

vim - Set filetype for a new file extension

I thought this would be quite difficult, but it turned out to be simple, you just need one line in your .vimrc

au BufNewFile ,BufRead *.new_file_extension  set filetype=new_file_type

or set it to a known type

au BufNewFile ,BufRead *.new_file_extension  set filetype=xml

http://learnvimscriptthehardway.stevelosh.com/chapters/44.html

If you need to specify the  syntax of new_file_type, you can put new_file_type.vim in .vim/syntax folder, and everything get picked up automatically.

If you use  snipMate, you can define new_file_type.snippets in .vim/snippet folder.