在$VIMRUNTIME/ftplugin/
(例如python.vim
和ada.vim
)某些脚本不定义b:undo_ftplugin
。 cpo
选项的默认值是aABceFs
。每个'ftplugin/name.vim`都需要定义`b:undo_ftplugin`吗?
当我set ft=python
,然后set ft=css
。 $VIMRUNTIME/ftplugin/css.vim
立即完成。和omnifunc=pythoncomplete#Complete
一直。
应该每ftplugin/name.vim
需要定义b:undo_ftplugin
?
这是/usr/share/vim/vim73/ftplugin.vim
:
" Vim support file to switch on loading plugins for file types
"
" Maintainer: Bram Moolenaar <[email protected]>
" Last change: 2006 Apr 30
if exists("did_load_ftplugin")
finish
endif
let did_load_ftplugin = 1
augroup filetypeplugin
au FileType * call s:LoadFTPlugin()
func! s:LoadFTPlugin()
if exists("b:undo_ftplugin")
exe b:undo_ftplugin
unlet! b:undo_ftplugin b:did_ftplugin
endif
let s = expand("<amatch>")
if s != ""
if &cpo =~# "S" && exists("b:did_ftplugin")
" In compatible mode options are reset to the global values, need to
" set the local values also when a plugin was already used.
unlet b:did_ftplugin
endif
" When there is a dot it is used to separate filetype names. Thus for
" "aaa.bbb" load "aaa" and then "bbb".
for name in split(s, '\.')
exe 'runtime! ftplugin/' . name . '.vim ftplugin/' . name . '_*.vim ftplugin/' . name . '/*.vim'
endfor
endif
endfunc
augroup END
这是/usr/share/vim/vim73/ftplugin/css.vim
:
" Vim filetype plugin file
" Language: CSS
" Maintainer: Nikolai Weibull <[email protected]>
" Latest Revision: 2008-07-09
if exists("b:did_ftplugin")
finish
endif
let b:did_ftplugin = 1
let s:cpo_save = &cpo
set cpo&vim
let b:undo_ftplugin = "setl com< cms< inc< fo< ofu<"
setlocal comments=s1:/*,mb:*,ex:*/ commentstring&
setlocal formatoptions-=t formatoptions+=croql
setlocal omnifunc=csscomplete#CompleteCSS
let &l:include = '^\s*@import\s\+\%(url(\)\='
let &cpo = s:cpo_save
unlet s:cpo_save
如果我set ft=python
,然后set ft=css
。 Vim可以不通过这个测试:
if &cpo =~# "S" && exists("b:did_ftplugin")
b:did_ftplugin
没有被删除,所以ftplugin/css.vim
立即完成。