为什么vim看到几个文件作为CCTreeLoadXRefDBFromDisk的参数

Question

autocmd VimEnter * if filereadable('cctree.out') | CCTreeLoadXRefDBFromDisk cctree.out | endif

我收到错误消息：

E172: Only one file name allowed:  CCTreeLoadXRefDBFromDisk cctree.out | endif

Answer 1

看起来这个命令将|视为其参数的一部分（除非在定义命令时指定-bar，否则它是默认值。还有另一个奇怪的默认值）。尝试

function s:TreeLoad(file)
    if filereadable(a:file)
        execute 'CCTreeLoadXRefDBFromDisk' fnameescape(a:file)
    endif
endfunction
augroup VimrcTreeLoad
    autocmd!
    autocmd VimEnter * :call s:TreeLoad('cctree.out')
augroup END