vim配置（六)：YCM(YouCompleteMe)，支持C++语义补全

效果图：

提示信息说明：

       1、m:函数成员，member function

       2、f: 数据成员,field

      3、继承来的也显示出来了:shared_from_this()、weak_from_this

函数的原型也提示了，见上图

没有#include <iostream>，所以std::cout被YCM标识为错误了

std::string的成员函数

配置如下：

[code]"/**
"* @file .vimrc
"* @brief vimrc
"* @author shlian
"* @version 1.0.0
"* @date 2020-08-24
"*/

set nocompatible " 关闭 vi 兼容模式
set smartindent "当在大括号中间回车的时候，他会智能缩进，因为他知道括号中间要缩进
set tabstop=4
set shiftwidth=4
set expandtab
syntax on " 自动语法高亮
set number " 显示行号

set cursorline " 突出显示当前行
"red（红），white（白），black（黑），green（绿），yellow（黄），blue（蓝），purple（紫），gray（灰），brown（棕），tan(褐色)，syan(青色)
hi CursorLine   cterm=NONE ctermbg=darkgray ctermfg=NONE
"hi CursorColumn cterm=NONE ctermbg=darkred ctermfg=white

set ruler " 打开状态栏标尺
set shiftwidth=4 " 设定 << 和 >> 命令移动时的宽度为 4
set softtabstop=4 " 使得按退格键时可以一次删掉 4 个空格
set tabstop=4 " 设定 tab 长度为 4
set nobackup " 覆盖文件时不备份
"set autochdir " 自动切换当前目录为当前文件所在的目录
set backupcopy=yes " 设置备份时的行为为覆盖
set ignorecase smartcase " 搜索时忽略大小写，但在有一个或以上大写字母时仍保持对大小写敏感
set nowrapscan " 禁止在搜索到文件两端时重新搜索
set incsearch " 输入搜索内容时就显示搜索结果
set hlsearch " 搜索时高亮显示被找到的文本
set noerrorbells " 关闭错误信息响铃
set novisualbell " 关闭使用可视响铃代替呼叫
set t_vb= " 置空错误铃声的终端代码
set showmatch " 插入括号时，短暂地跳转到匹配的对应括号
" set matchtime=2 " 短暂跳转到匹配括号的时间
set magic " 设置魔术
set hidden " 允许在有未保存的修改时切换缓冲区，此时的修改由 vim 负责保存
set guioptions-=T " 隐藏工具栏
set guioptions-=m " 隐藏菜单栏
set smartindent " 开启新行时使用智能自动缩进
set backspace=indent,eol,start
" 不设定在插入状态无法用退格键和 Delete 键删除回车符
set cmdheight=1 " 设定命令行的行数为 1
set laststatus=2 " 显示状态栏 (默认值为 1, 无法显示状态栏)
set statusline=\ %<%F[%1*%M%*%n%R%H]%=\ %y\ %0(%{&fileformat}\ %{&encoding}\ %c:%l/%L%)\

" 设置在状态行显示的信息
"set foldenable " 开始折叠
set foldmethod=syntax " 设置语法折叠
set foldcolumn=0 " 设置折叠区域的宽度
setlocal foldlevel=1 " 设置折叠层数为
" set foldclose=all " 设置为自动关闭折叠
nnoremap <space> @=((foldclosed(line('.')) < 0) ? 'zc' : 'zo')<CR>
" 用空格键来开关折叠

" return OS type, eg: windows, or linux, mac, et.st..
function! MySys()
if has("win16") || has("win32") || has("win64") || has("win95")
return "windows"
elseif has("unix")
return "linux"
endif
endfunction

" 用户目录变量$VIMFILES
if MySys() == "windows"
let $VIMFILES = $VIM.'/vimfiles'
elseif MySys() == "linux"
let $VIMFILES = $HOME.'/.vim'
endif

" 设定doc文档目录
let helptags=$VIMFILES.'/doc'

" 设置字体 以及中文支持
if has("win32")
set guifont=Inconsolata:h12:cANSI
endif

" 配置多语言环境
if has("multi_byte")
" UTF-8 编码
set encoding=utf-8
set termencoding=utf-8
set formatoptions+=mM
set fencs=utf-8,gbk

if v:lang =~? '^\(zh\)\|\(ja\)\|\(ko\)'
set ambiwidth=double
endif

if has("win32")
source $VIMRUNTIME/delmenu.vim
source $VIMRUNTIME/menu.vim
language messages zh_CN.utf-8
endif
else
echoerr "Sorry, this version of (g)vim was not compiled with +multi_byte"
endif

" Buffers操作快捷方式!
nnoremap <C-RETURN> :bnext<CR>
nnoremap <C-S-RETURN> :bprevious<CR>

" Tab操作快捷方式!
nnoremap <C-TAB> :tabnext<CR>
nnoremap <C-S-TAB> :tabprev<CR>

"关于tab的快捷键
" map tn :tabnext<cr>
" map tp :tabprevious<cr>
" map td :tabnew .<cr>
" map te :tabedit
" map tc :tabclose<cr>

"窗口分割时,进行切换的按键热键需要连接两次,比如从下方窗口移动
"光标到上方窗口,需要<c-w><c-w>k,非常麻烦,现在重映射为<c-k>,切换的
"时候会变得非常方便.
nnoremap <C-h> <C-w>h
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l

" set fileformats=unix,dos,mac
nmap <leader>fd :se fileformat=dos<CR>
nmap <leader>fu :se fileformat=unix<CR>

" use Ctrl+[l|n|p|cc] to list|next|previous|jump to count the result
" map <C-x>l <ESC>:cl<CR>
" map <C-x>n <ESC>:cn<CR>
" map <C-x>p <ESC>:cp<CR>
" map <C-x>c <ESC>:cc<CR>

" 让 Tohtml 产生有 CSS 语法的 html
" syntax/2html.vim，可以用:runtime! syntax/2html.vim
"let html_use_css=1

" Python 文件的一般设置，比如不要 tab 等
autocmd FileType python set tabstop=4 shiftwidth=4 expandtab
autocmd FileType python map <F12> :!python %<CR>

" 选中状态下 Ctrl+c 复制
"vmap <C-c> "+y

"十六进制显示文件
nmap <leader>H :%!xxd<CR>
"二进制显示文件
nmap <leader>B :%!xxd -r<CR>

"******************************************************************************************************************

set rtp+=~/.vim/bundle/Vundle.vim

call vundle#begin()
filetype plugin indent on    " 必须加载vim自带和插件相应的语法和文件类型相关脚本

"vim包管理工具
Plugin 'gmarik/Vundle.vim'

"文件目录增加git 状态
Plugin 'Xuyuanp/nerdtree-git-plugin'

"tab智能补全
Plugin 'ervandew/supertab'

"代码可视化缩进块
Plugin 'yggdroot/indentline'
let g:indentLine_enabled = 1
let g:indentLine_color_term = 230
"let g:indentLine_char_list = ['|', '¦', '┆', '┊','|'] 会出现光标的错行，慎用
let g:indentLine_char_list = ['|', '¦', '¦', '¦']

"彩虹括号
Plugin 'kien/rainbow_parentheses.vim'

"真彩色
Plugin 'tpope/vim-sensible'

"git左边栏增删改提示
Plugin 'airblade/vim-gitgutter'

Plugin 'altercation/solarized'
Plugin 'altercation/vim-colors-solarized'  "solarized
let g:solarized_termtrans  = 1         " 使用 termnal 背景
let g:solarized_visibility = "high"    " 使用 :set list 显示特殊字符时的高亮级别

" GUI 模式浅色背景，终端模式深色背景
if has('gui_running')
set background=light
else
set background=dark
endif
" 主题设置为 solarized
"colorscheme solarized

"文件目录分屏
Plugin 'scrooloose/nerdtree'
let NERDTreeHighlightCursorline = 1       " 高亮当前行
let NERDTreeShowLineNumbers     = 1       " 显示行号
" 忽略列表中的文件
let NERDTreeIgnore = [ '\.pyc$', '\.pyo$', '\.obj$', '\.o$', '\.egg$', '^\.git$', '^\.repo$', '^\.svn$', '^\.hg$' ]
" 启动 vim 时打开 NERDTree
"autocmd vimenter * NERDTree
" 当打开 VIM，没有指定文件时和打开一个目录时，打开 NERDTree
"autocmd StdinReadPre * let s:std_in = 1
"autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
"autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif
" 关闭 NERDTree，当没有文件打开的时候
"autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTreeType") && b:NERDTreeType == "primary") | q | end

" <leader>nt 打开 nerdtree 窗口，在左侧栏显示
map <leader>nt :NERDTreeToggle<CR>
" <leader>tc 关闭当前的 tab
map <leader>tc :tabc<CR>
" <leader>to 关闭所有其他的 tab
map <leader>to :tabo<CR>
" <leader>ts 查看所有打开的 tab
map <leader>ts :tabs<CR>
" <leader>tp 前一个 tab
map <leader>tp :tabp<CR>
" <leader>tn 后一个 tab
map <leader>tn :tabn<CR

"tagbar
Plugin 'majutsushi/tagbar'
let g:tagbar_ctags_bin = 'ctags' " tagbar 依赖 ctags 插件
let g:tagbar_width     = 30      " 设置 tagbar 的宽度为 30 列，默认 40 列
let g:tagbar_autofocus = 1       " 打开 tagbar 时光标在 tagbar 页面内，默认在 vim 打开的文件内
let g:tagbar_left      = 1       " 让 tagbar 在页面左侧显示，默认右边
"let g:tagbar_sort      = 0       " 标签不排序，默认排序

" <leader>tb 打开 tagbar 窗口，在左侧栏显示
map <leader>tb :TagbarToggle<CR>

"taglist
Plugin 'vim-scripts/taglist.vim'

let Tlist_Show_One_File           = 1    " 只显示当前文件的tags
let Tlist_GainFocus_On_ToggleOpen = 1    " 打开 Tlist 窗口时，光标跳到 Tlist 窗口
let Tlist_Exit_OnlyWindow         = 1    " 如果 Tlist 窗口是最后一个窗口则退出 Vim
let Tlist_Use_Left_Window         = 1    " 在左侧窗口中显示
let Tlist_File_Fold_Auto_Close    = 1    " 自动折叠
let Tlist_Auto_Update             = 1    " 自动更新

" <leader>tl 打开 Tlist 窗口，在左侧栏显示
map <leader>tl :TlistToggle<CR>

"winmanager
Plugin 'vim-scripts/winmanager'
let g:NERDTree_title="[NERDTree]"
"let g:winManagerWindowLayout="TagList|NERDTree"
let g:winManagerWindowLayout='FileExplorer|TagList'

function! NERDTree_Start()
exec 'NERDTree'
endfunction
function! NERDTree_IsValid()
return 1
endfunction

nmap wm :WMToggle<CR>

"powerline fonts
Plugin 'powerline/powerline-fonts'

"状态栏
Plugin 'vim-airline/vim-airline'
Plugin 'vim-airline/vim-airline-themes'

let g:airline_powerline_fonts = 1   " 使用powerline打过补丁的字体
if !exists('g:airline_symbols')
let g:airline_symbols = {}
endif

" 关闭当前 buffer
"noremap <C-x> :w<CR>:bd<CR>
"<leader>1~9 切到 buffer1~9
map <leader>1 :b 1<CR>
map <leader>2 :b 2<CR>
map <leader>3 :b 3<CR>
map <leader>4 :b 4<CR>
map <leader>5 :b 5<CR>
map <leader>6 :b 6<CR>
map <leader>7 :b 7<CR>
map <leader>8 :b 8<CR>
map <leader>9 :b 9<CR>

"Vim 在与屏幕/键盘交互时使用的编码(取决于实际的终端的设定)
set encoding=utf-8
set langmenu=zh_CN.UTF-8
" 设置打开文件的编码格式
set fileencodings=ucs-bom,utf-8,cp936,gb18030,big5,euc-jp,euc-kr,latin1
set fileencoding=utf-8
" 解决菜单乱码
source $VIMRUNTIME/delmenu.vim
source $VIMRUNTIME/menu.vim
" 解决consle输出乱码
"set termencoding = cp936
" 设置中文提示
language messages zh_CN.utf-8
" 设置中文帮助
set helplang=cn
" 设置为双字宽显示，否则无法完整显示如:☆
set ambiwidth=double
" 总是显示状态栏
let laststatus = 2
let g:airline_theme='solarized'      " 设置主题,simple、dark、solarized、bubblegum 详见.vim/bundle/vim-airline-themes

" 开启tabline
let g:airline#extensions#tabline#enabled = 1      "tabline中当前
let g:airline#extensions#tabline#left_sep = ' '   "buffer两端的分隔字符
let g:airline#extensions#tabline#left_alt_sep = '|'      "tabline中
let g:airline#extensions#tabline#buffer_nr_show = 1      "buffer显示编号

let g:airline_left_sep = ' '
let g:airline_left_alt_sep = '▶'
let g:airline_right_sep = ' '
let g:airline_right_alt_sep = '◀'
let g:airline_symbols.crypt = '🔒'
let g:airline_symbols.linenr = '¶'
let g:airline_symbols.maxlinenr = '㏑'
let g:airline_symbols.branch = '⎇'
let g:airline_symbols.paste = 'ρ'
let g:airline_symbols.spell = 'Ꞩ'
let g:airline_symbols.notexists = 'Ɇ'
let g:airline_symbols.whitespace = 'Ξ'

" 映射切换buffer的键位
nnoremap [b :bp<CR>
nnoremap ]b :bn<CR>
" 设置字体
set guifont=Powerline_Consolas:h14:cANSI

Plugin 'enricobacis/vim-airline-clock'
"let g:airline#extensions#clock#auto = 0  关闭
let g:airline#extensions#clock#format = '%H:%M:%S'

""代码动态检查(使用YCM自带的即可)
"Plugin 'w0rp/ale'
"    let g:ale_lint_on_text_changed       = 'normal'                     " 代码更改后启动检查
"    let g:ale_lint_on_insert_leave       = 1                            " 退出插入模式即检查
"    let g:ale_sign_column_always         = 1                            " 总是显示动态检查结果
"    "let g:ale_statusline_format = ['✗ %d', '⚡%d','✔  OK']
"    let g:ale_sign_error                 = '>>'                         " error 告警符号
"    let g:ale_sign_warning               = '--'                         " warning 告警符号
"    let g:ale_echo_msg_error_str         = 'E'                          " 错误显示字符
"    let g:ale_echo_msg_warning_str       = 'W'                          " 警告显示字符
"    let g:ale_echo_msg_format            = '[%linter%] %s [%severity%]' " 告警显示格式
"
"    " C 语言配置检查参数
"    let g:ale_c_gcc_options              = '-Wall -Werror -O2 -std=c11'
"    let g:ale_c_clang_options            = '-Wall -Werror -O2 -std=c11'
"    let g:ale_c_cppcheck_options         = ''
"    " C++ 配置检查参数
"    let g:ale_cpp_gcc_options            = '-Wall -Werror -O2 -std=c++14'
"    let g:ale_cpp_clang_options          = '-Wall -Werror -O2 -std=c++14'
"    let g:ale_cpp_cppcheck_options       = ''
"
"    "使用clang对c和c++进行语法检查，对python使用pylint进行语法检查
"    let g:ale_linters = {  'c++': ['clang', 'gcc'] }
"    " <F9> 触发/关闭代码动态检查
"    map <F9> :ALEToggle<CR>
"    "普通模式下，ak 前往上一个错误或警告，aj 前往下一个错误或警告
"    nmap ak <Plug>(ale_previous_wrap)
"    nmap aj <Plug>(ale_next_wrap)
"    " ad 查看错误或警告的详细信息
"    nmap ad :ALEDetail<CR>

"模糊查找文件，ctrl+p
Plugin 'ctrlp/ctrlp.vim'

"git log与code对应
"Plugin 'vim-fugitive'

"显示文件修改痕迹
Plugin 'chrisbra/changesPlugin'

"Plugin 'bufexplorer'

"浏览最近打开的文件
Plugin 'vim-startify'

"撤销
Plugin 'Gundo'
nnoremap <leader>u :GundoToggle<CR>

"恢复上次关闭时所打开的文件
"Plugin 'Sessionman'
"set sessionoptions=blank,buffers,curdir,folds,tabpages,winsize
"nmap <leader>sl :SessionList<CR>
"nmap <leader>ss :SessionSave<CR>
"nmap <leader>sc :SessionClose<CR>

"Plugin 'Powerline'
"Plugin 'rainbow_parentheses'

Plugin 'ludovicchabant/vim-gutentags'
"gutentags搜索工程目录的标志，碰到这些文件/目录名就停止向上一级目录递归

let g:gutentags_project_root = ['.root', '.svn', '.git', '.project']

" 所生成的数据文件的名称 "
let g:gutentags_ctags_tagfile = '.tags'

" 将自动生成的 tags 文件全部放入 ~/.cache/tags 目录中，避免污染工程目录 "
let s:vim_tags = expand('~/.cache/tags')
let g:gutentags_cache_dir = s:vim_tags
" 检测 ~/.cache/tags 不存在就新建 "
if !isdirectory(s:vim_tags)
silent! call mkdir(s:vim_tags, 'p')
endif

" 配置 ctags 的参数 "
let g:gutentags_ctags_extra_args = ['--fields=+niazS', '--extra=+q']
let g:gutentags_ctags_extra_args += ['--c++-kinds=+pxI']
let g:gutentags_ctags_extra_args += ['--c-kinds=+px']

Plugin 'skywind3000/gutentags_plus'
" gutentags搜索工程目录的标志，碰到这些文件/目录名就停止向上一级目录递归
" let g:gutentags_project_root = ['.root', '.svn', '.git', '.project']

" 所生成的数据文件的名称 "
let g:gutentags_ctags_tagfile = '.tags'

" 将自动生成的 tags 文件全部放入 ~/.cache/tags 目录中，避免污染工程目录
let s:vim_tags = expand('~/.cache/tags')
let g:gutentags_cache_dir = s:vim_tags
" 检测 ~/.cache/tags 不存在就新建 "
if !isdirectory(s:vim_tags)
silent! call mkdir(s:vim_tags, 'p')
endif

" 配置 ctags 的参数 "
let g:gutentags_ctags_extra_args = ['--fields=+niazS','--extra=+q']
let g:gutentags_ctags_extra_args += ['--c++-kinds=+pxI']
"let g:gutentags_ctags_extra_args += ['--c-kinds=+px']

"json viewer
Plugin 'elzr/vim-json'

" vim script library 用法详见src
Plugin 'L9'

"在needtree中显示文件图标
Plugin 'ryanoasis/vim-devicons'

"c++ 语法高亮
Plugin 'octol/vim-cpp-enhanced-highlight'
"let g:cpp_class_scope_highlight = 1
"let g:cpp_member_variable_highlight = 1
"let g:cpp_class_decl_highlight = 1
"let g:cpp_posix_standard = 1
"let g:cpp_experimental_simple_template_highlight = 1
"let g:cpp_experimental_template_highlight = 1
"let g:cpp_concepts_highlight = 1
"let g:cpp_no_function_highlight = 1

"switch .h <->.cpp
"Plugin 'a.vim'

"查找文件
Plugin 'junegunn/fzf'
":FZF 从当前目录查找
":FZF ~ 从home目录查找
nmap <leader>f :FZF<CR>
nmap <leader>F :FZF ~<CR>

"查找
Plugin 'FuzzyFinder'
":FufBuffer|       - Buffer mode (|fuf-buffer-mode|)
":FufFile|         - File mode (|fuf-file-mode|)
":FufCoverageFile| - Coverage-File mode (|fuf-coveragefile-mode|)
":FufDir|          - Directory mode (|fuf-dir-mode|)
":FufMruFile|      - MRU-File mode (|fuf-mrufile-mode|)
":FufMruCmd|       - MRU-Command mode (|fuf-mrucmd-mode|)
":FufBookmarkFile| - Bookmark-File mode (|fuf-bookmarkfile-mode|)
":FufBookmarkDir|  - Bookmark-Dir mode (|fuf-bookmarkdir-mode|)
":FufTag|          - Tag mode (|fuf-tag-mode|)
":FufBufferTag|    - Buffer-Tag mode (|fuf-buffertag-mode|)
":FufTaggedFile|   - Tagged-File mode (|fuf-taggedfile-mode|)
":FufJumpList|     - Jump-List mode (|fuf-jumplist-mode|)
":FufChangeList|   - Change-List mode (|fuf-changelist-mode|)
":FufQuickfix|     - Quickfix mode (|fuf-quickfix-mode|)
":FufLine|         - Line mode (|fuf-line-mode|)
":FufHelp|         - Help mode (|fuf-help-mode|)

"doc
Plugin 'DoxygenToolkit.vim'
":Dox
":DoxAuthor
":DoxBlock
":DoxLic

"draw txt graph
Plugin 'DrawIt'
"\di start
"\ds stop

""bookmarks
"Plugin 'mattesgroeger/vim-bookmarks'
"    highlight BookmarkSign ctermbg=NONE ctermfg=160
"    highlight BookmarkLine ctermbg=NONE ctermfg=NONE
"    let g:bookmark_sign = '♥'
"    let g:bookmark_highlight_lines = 1
"    nmap <leader><leader> <Plug>BookmarkToggle
"    nmap <leader>i <Plug>BookmarkAnnotate
"    nmap <leader>a <Plug>BookmarkShowAll
"    nmap <leader>j <Plug>BookmarkNext
"    nmap <leader>k <Plug>BookmarkPrev
"    nmap <leader>c <Plug>BookmarkClear
"    nmap <leader>x <Plug>BookmarkClearAll
"    nmap <leader>kk <Plug>BookmarkMoveUp
"    nmap <leader>jj <Plug>BookmarkMoveDown
"    nmap <leader>g <Plug>BookmarkMoveToLine

"highlighting for Google's Protocol Buffers
"Plugin 'uarun/vim-protobuf'

"显示所有的leader映射
Plugin 'hecal3/vim-leader-guide'
":LeaderGuide '\'

"cmake
"Plugin 'jansenm/vim-cmake'

"Plugin 'ihacklog/hicursorwords'
"    let g:HiCursorWords_delay = 200
"    let g:HiCursorWords_hiGroupRegexp = ''
"    let g:HiCursorWords_debugEchoHiName = 0

""语法检查(使用YCM自带的即可)
"Plugin 'scrooloose/syntastic'
"    set statusline+=%#warningmsg#
"    set statusline+=%{SyntasticStatuslineFlag()}
"    set statusline+=%*
"    let g:syntastic_always_populate_loc_list = 1
"    let g:syntastic_auto_loc_list = 0
"    let g:syntastic_check_on_open = 1
"    let g:syntastic_check_on_wq = 0
"    let g:syntastic_cpp_checkers = ['gcc']
"    let g:syntastic_cpp_compiler = 'g++'
"    let g:syntastic_cpp_compiler_options = '-std=c++11 -stdlib=libc++'
"    "if !exists('g:syntastic_cpp_compiler_options')
"    "    let g:syntastic_cpp_compiler_options = ' -std=c++11 -lstdc++ '
"    "endif

"注释
Plugin 'scrooloose/nerdcommenter'
"\cc 注释
" Add spaces after comment delimiters by default
let g:NERDSpaceDelims = 1

" Use compact syntax for prettified multi-line comments
let g:NERDCompactSexyComs = 1

" Align line-wise comment delimiters flush left instead of following code indentation
let g:NERDDefaultAlign = 'left'

" Set a language to use its alternate delimiters by default
let g:NERDAltDelims_java = 1

" Add your own custom formats or override the defaults
let g:NERDCustomDelimiters = { 'c': { 'left': '/**','right': '*/' } }

" Allow commenting and inverting empty lines (useful when commenting a region)
let g:NERDCommentEmptyLines = 1

" Enable trimming of trailing whitespace when uncommenting
let g:NERDTrimTrailingWhitespace = 1

" Enable NERDCommenterToggle to check all selected lines is commented or not
let g:NERDToggleCheckAllLines = 1

Plugin 'tpope/surround-vim'

Plugin 'Valloric/YouCompleteMe'
let g:ycm_key_list_select_completion=['<c-n>']
let g:ycm_key_list_previous_completion=['<c-p>']

let g:ycm_confirm_extra_conf=0 "关闭加载.ycm_extra_conf.py提示
"let g:ycm_global_ycm_extra_conf ='~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/ycm/.ycm_extra_conf.py' "否则提示有问题
let g:ycm_collect_identifiers_from_tags_files=1 " 开启 YCM 基于标签引擎
let g:ycm_min_num_of_chars_for_completion=1 " 从第1个键入字符就开始罗列匹配项
let g:ycm_cache_omnifunc=0 " 禁止缓存匹配项,每次都重新生成匹配项

let g:ycm_seed_identifiers_with_syntax=1 " 语法关键字补全
nnoremap <F5> :YcmForceCompileAndDiagnostics<CR> "force recomile with syntastic
"nnoremap <leader>lo :lopen<CR> "open locationlist
"nnoremap <leader>lc :lclose<CR>    "close locationlist

"inoremap <leader><leader> <C-x><C-o>
let g:ycm_complete_in_comments = 1 "在注释输入中也能补全
let g:ycm_complete_in_strings = 1 "在字符串输入中也能补全
let g:ycm_collect_identifiers_from_comments_and_strings = 0 "注释和字符串中的文字也会被收入补全

let g:ycm_max_num_identifier_candidates = 50
let g:ycm_auto_trigger = 1

let g:ycm_error_symbol = '>>'
let g:ycm_warning_symbol = '>'

let g:ycm_always_populate_location_list = 0

"highlight Pmenu ctermfg=4 ctermbg=0 guifg=#ffffff guibg=#000000  "提示不再是粉红色(pink)
highlight Pmenu ctermfg=4 ctermbg=8 guifg=#ffffff guibg=#000000  "提示不再是粉红色(pink)

call vundle#end()