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在~/.vimrc中，我设置了：

" Configure CtrlP

" Ctrl-O opens CtrlP for the current word.
map <C-o> <C-P><C-\>w

" Ensure we aren't using a custom command.
if exists("g:ctrl_user_command")
  unlet g:ctrlp_user_command
endif

" Specify the cache directory.
let g:ctrlp_cache_dir = $HOME . '/.cache/ctrlp'

" Ignore certain files and directories.
let g:ctrlp_custom_ignore = {
  \ 'dir':  '\v(\.git|\.hg|\.svn\|vendor|tmp)$',
  \ 'file': '\v\.(swp|swo)$',
  \ 'link': '',
  \ }

" Disable opening files in a new buffer ("e").
" Default to opening files in a new tab ("t").
let g:ctrlp_prompt_mappings = {
    \ 'AcceptSelection("e")': [],
    \ 'AcceptSelection("t")': ['<cr>', '<2-LeftMouse>'],
    \ }

但是，CtrlP 继续索引文件vendor/：

$ grep -c '^vendor/' ~/.cache/ctrlp/%Users%nick%src%todo.txt
11759

如果我删除g:ctrlp_custom_ignore并添加这个：

set wildignore+=*/tmp/*,*.so,*.swp,*.swo,*/vendor/*,*/\.git/*

CtrlP 不索引vendor/. 为什么 CtrlP 不使用g:ctrlp_custom_ignore？

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