四、nvim配置文件

这是一份没有插件的 neovim 配置。

init.vim

source $HOME/.config/nvim/general/settings.vim
source $HOME/.config/nvim/general/appearance.vim
source $HOME/.config/nvim/general/keyshortcuts.vim
source $HOME/.config/nvim/general/plugins.vim

下属四个子配置文件：

（一）settings.vim

set nocompatible  " 关闭 vi 兼容模式
set modelines=0  " 禁用模式行（安全措施）
set nobackup  " 不进行备份设置
set nowritebackup
set noswapfile  " 禁止产生交换文件
set autoread  " 自动检测文件外部更改

" === 中文显示
set langmenu=zh_CN.UTF-8
set helplang=cn
set termencoding=utf-8
set encoding=utf8
set fileencodings=utf8,ucs-bom,gbk,cp936,gb2312,gb18030

" === 环境变量
let g:python3_host_prog = expand("/usr/bin/python3") 
let g:markdown_fenced_languages =['c', 'cpp', 'python', 'javascript']

" === 智能提示相关
syntax enable " 语法高亮
filetype on  " 文件类型检测
filetype plugin indent on  " 根据文件类型自动缩进


" === 显示相关
set termguicolors
set background=dark
" colorscheme desert
set showtabline=2 " 始终显示顶部tabline
set number  " 显示绝对行号
" set relativenumber  " 显示相对行号（和绝对行号的设置冲突）
set ruler  " 显示标尺：右下角显示光标位置
" set cursorline  " 高亮显示当前行（256色是一条横线，真彩显示才是高亮）
" set nowrap  " 不自动折行显示
set pumheight=10  " 弹出菜单的高度
set splitbelow  " 左右分割窗口时，新窗口默认出现在右侧
set splitright  " 水平分割窗口时，新窗口默认出现在底部
set ambiwidth=double  " 中文标点显示一致
set sidescroll=10  " 移动到看不见的字符时，自动向右滚动10个字符
set sm!  " 高亮显示匹配括号
set novisualbell  " 不要闪烁
set showcmd  " select 模式下显示选中的行数
set vb t_vb=  " 不要响铃

" === 光标样式
let &t_SI = "\<Esc>]50;CursorShape=1\x7"
let &t_SR = "\<Esc>]50;CursorShape=2\x7"
let &t_EI = "\<Esc>]50;CursorShape=0\x7"
" set virtualedit=block,onemore   " 允许光标出现在最后一个字符的后面

" === 禁止显示滚动条
set guioptions-=l
set guioptions-=L
set guioptions-=r
set guioptions-=R
" 禁止显示菜单和工具条
set guioptions-=m
set guioptions-=T

" === 操作相关
set mouse="" " 不使用鼠标
" set mouse=a  " 使用鼠标
" set mousehide  " 输入时隐藏光标
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 iskeyword+=-  " 将 - 分隔的单词作为一个单词文本对象
set backspace=2  " 允许退格键Backspace删除 indent,eol,start
set conceallevel=0  " 在 markdonw 文件中可以看到 `` 符号
autocmd BufWritePost $MYVIMRC source $MYVIMRC  " 修改配置时，自动加载文件
" =(start)= 跨会话撤销，即新打开的文件依然能够撤销之前的 undo
set undofile
set undodir=~/.cache/nvim/undodir
if !isdirectory(&undodir)
   call mkdir(&undodir, "p", 0700)
endif
" =(end)=
" set autochdir  " 自动切换工作目录

" == 搜索查找相关
set ignorecase  " 搜索忽略大小写
set smartcase  " 智能匹配大小写
set hlsearch  " 高亮查找匹配
set incsearch  " 开始实时搜索功能

" === 缩进相关
set autoindent  " 开始新行时处理缩进
set smartindent  " 智能缩进
set smarttab  " 在行和段开始处使用制表符
set tabstop=4  " 编辑时制表符占用空格数
set shiftwidth=4  " 格式化时，制表符占用的空格数
set softtabstop=4  " 设置 4 个空格为制表符
set expandtab  " 将制表符Tab展开为空格, 这对于Python尤其有用

" === 代码补全
set completeopt=longest,menu  " 让Vim补全菜单行为跟IDE一致
set wildmenu                             " vim自身命名行模式智能补全
set completeopt=menuone,preview,noselect " 补全时不显示窗口，只显示补全列表
set omnifunc=syntaxcomplete#Complete     " 设置全能补全
set shortmess+=c                         " 设置补全静默
set cpt+=kspell                          " 设置补全单词

（二）keyshortcuts.vim

let mapleader=' '
" 模式切换
inoremap jk <ESC>

" Window
noremap <Leader>wn <C-w>w
noremap <Leader>wh <C-w><left>
noremap <Leader>wl <C-w><right>
noremap <Leader>wk <C-w><up>
noremap <Leader>wj <C-w><down>
noremap <Leader>wv :vs<CR>
noremap <Leader>ws :sp<CR>
noremap <Leader>w= <C-w>=
noremap <Leader>w+ <C-w>5>
noremap <Leader>w- <C-w>5<

" Buffer
noremap <Leader>bp :bp<CR>
noremap <Leader>bn :bn<CR>

" Tab
noremap <Leader>tn :tabnew<CR>
noremap <Leader>tn :tabnext<CR>
noremap <Leader>tp :tabprevious<CR>
noremap <Leader>tc :tabc<CR>

" 使用 \ + s 保存, \ + q 退出
noremap <Leader>fs :w<CR>
noremap <Leader>qq :q<CR>

" 打开或关闭目录树
nnoremap <leader>fe :Lexplore<CR>

（三）appearance.vim

" ===== 状态行 =====
set laststatus=2  " 始终显示状态栏  
set cmdheight=2  " 命令行区的高度  

" %F 完整文件路径名；%m 当前缓冲被修改标记；%r 当前缓冲只读标记  
" %h 帮助缓冲标记；%w 预览缓冲标记
set statusline=%1*%F%m%r%h%w%=\ 
" %Y 文件类型
set statusline+=%2*\ %Y\ \|\
" %{...} 评估表达式的值，并用值代替  
" %{"[fenc=".(&fenc==""?&enc:&fenc).((exists("+bomb") && &bomb)?"+":"")."]"} 显示文件编码  
set statusline+=%3*%{\"\".(\"\"?&enc:&fenc).((exists(\"+bomb\")\ &&\ &bomb)?\"+\":\"\").\"\"}\
" %l 行数；%v 列数  
set statusline+=%4*[%l:%v]\ 
" %p 当前行数占总行数的的百分比
set statusline+=%5*%p%%\ \|\
" %L 总行数
set statusline+=%6*%LL\
" 其他可用配置：%b ASCII值；%B 十六进制值；%{&ff} 显示文件类型

" 颜色
hi User1 cterm=none ctermfg=gray ctermbg=darkgray
hi User2 cterm=none ctermfg=darkgrey ctermbg=darkgray
hi User3 cterm=bold ctermfg=darkgrey ctermbg=gray
hi User4 cterm=bold ctermfg=yellow ctermbg=gray
hi User5 cterm=none ctermfg=darkgrey ctermbg=gray
hi User6 cterm=none ctermfg=darkgrey ctermbg=gray

" ===== Tabline 文件选项卡 =====
" Tabline 背景色
hi TabLineFill term=reverse ctermfg=5 ctermbg=7 guibg=#6c6c6c
" 设置 tab 选中状态时的颜色
hi SelectTabLine term=Bold cterm=Bold ctermfg=DarkYellow ctermbg=LightGray
hi SelectPageNum cterm=None ctermfg=DarkRed ctermbg=LightGray
hi SelectWindowsNum cterm=None ctermfg=DarkCyan ctermbg=LightGray
" 设置 tab 未选中状态时的颜色
hi NormalTabLine cterm=None ctermfg=Gray ctermbg=DarkGray
hi NormalPageNum cterm=None ctermfg=Gray ctermbg=DarkGray
hi NormalWindowsNum cterm=None ctermfg=Gray ctermbg=DarkGray

" 设置每个 tab 的显示样式，比如使用「」包裹
function MyTabLine()
    let s = ''
    for i in range(tabpagenr('$'))
        " select the highlighting
        let hlTab = ''
        let select = 0
        if i + 1 == tabpagenr()
            let hlTab = '%#SelectTabLine#'
            let s ..= hlTab . '⎡%#SelectPageNum#%T' . (i + 1) . hlTab
            let select = 1
        else
            let hlTab = '%#NormalTabLine#'
            let s ..= hlTab . "⎡%#NormalTabLine#%T" . (i + 1) . hlTab
        endif

        " the label is made by MyTabLabel()
        let s .= ' %<%{MyTabLabel(' . (i + 1) . ', ' . select . ')} '
        "追加窗口数量
        let wincount = tabpagewinnr(i + 1, '$')
        if wincount > 1
            if select == 1
                let s .= "%#SelectWindowsNum#" . wincount
            else
                let s .= "%#NormalWindowsNum#" . wincount
            endif
        endif
        let s .= hlTab . "⎦"
    endfor

    " after the last tab fill with TabLineFill and reset tab page nr
    let s ..= '%#TabLineFill#%T'

    " right-align the label to close the current tab page
    if tabpagenr('$') > 1
      let s ..= '%=%#TabLine#%999X░❨X❩'
    endif

    return s
endfunction

" Now the MyTabLabel() function is called for each tab page to get its label. >
function MyTabLabel(n, select)
    let label = ''
    let buflist = tabpagebuflist(a:n)

    for bufnr in buflist
        if getbufvar(bufnr, "&modified")
            let label = '+'
            break
        endif
    endfor

    let winnr = tabpagewinnr(a:n)
    let name = bufname(buflist[winnr - 1])

    if name == ''
        if &buftype == 'quickfix'
            let name = '[Quickfix List]'
        else
            let name = '[No Name]'
        endif
    else
        let name = fnamemodify(name, ':t')
    endif

    let label .= name
    return label
endfunction

set tabline=%!MyTabLine()

" ===== netrw 文件资源管理器 =====
let g:netrw_banner = 0         " 设置是否显示横幅
let g:netrw_liststyle = 3      " 设置目录列表样式：树形
let g:netrw_browse_split = 4   " 在之前的窗口编辑文件
let g:netrw_altv = 1           " 水平分割时，文件浏览器始终显示在左边
let g:netrw_winsize = 25       " 设置文件浏览器窗口宽度为25%
let g:netrw_list_hide= '^\..*' " 不显示隐藏文件 用 a 键就可以显示所有文件、 隐藏匹配文件或只显示匹配文件

（四）plugins.vim

call plug#begin("~/.config/nvim/plugged")
" The default plugin directory will be as follows:
"   - Vim (Linux/macOS): '~/.vim/plugged'
"   - Vim (Windows): '~/vimfiles/plugged'
"   - Neovim (Linux/macOS/Windows): stdpath('data') . '/plugged'
" You can specify a custom plugin directory by passing it as the argument
"   - e.g. `call plug#begin('~/.vim/plugged')`
"   - Avoid using standard Vim directory names like 'plugin'

" 这里只添加了 coc 一个插件
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Initialize plugin system
" - Automatically executes `filetype plugin indent on` and `syntax enable`.
call plug#end()