My .vimrc

.vimrc

set nocompatible

set encoding=utf-8
set fileencodings=utf-8,gbk,s-jis

set expandtab
set shiftwidth=4
set softtabstop=4
set tabstop=4

set backspace=indent,eol,start
set display=truncate
set guifont=consolas:h12
set history=200
set hlsearch
set incsearch
set ruler
set mouse=a
set nobackup
set noundofile
set number
set showcmd
set smartindent
set timeout
set timeoutlen=100
set wildmenu

colorscheme desert
filetype plugin indent on
syntax on

highlight LongLine ctermbg=red guibg=red
highlight ExtraWhitespace ctermbg=red guibg=red
"au BufWinEnter * let w:m0 = matchadd('LongLine', '\%>80v.\+', -1)
au BufWinEnter * let w:m1 = matchadd('ExtraWhitespace', '\s\+$', -1)
au InsertEnter * let w:m2 = matchadd('ExtraWhitespace', '\s\+\%#\@<!$', -1)
au InsertEnter * call matchdelete(w:m1)
au InsertLeave * let w:m1 = matchadd('ExtraWhitespace', '\s\+$', -1)
au InsertLeave * call matchdelete(w:m2)

augroup VimStartup
  au!
  au BufReadPost *
    \ if line("'\"") >= 1 && line("'\"") <= line("$") && &ft !~# 'commit'
    \ |   exe "normal! g`\""
    \ | endif
augroup end

let g:Gcc = "gcc"
let g:Gxx = "g++"
let g:Clang = "clang -Xclang -flto-visibility-public-std"
let g:Clang = g:Clang . " -D_CRT_SECURE_NO_WARNINGS"
let g:Clangxx = "clang++ -Xclang -flto-visibility-public-std"
let g:Clangxx = g:Clangxx . " -D_CRT_SECURE_NO_WARNINGS"

let g:CFlags    = " -Wall -Wconversion -Wextra -Wformat -o %<.exe % -DVIOLOCAL"
let g:CxxFlags  = " -Wall -Wconversion -Wextra -Wformat -o %<.exe % -DVIOLOCAL"
  . " -ID:\\code\\algo\\include"
let g:CGcc      = g:Gcc     . g:CFlags
let g:CClang    = g:Clang   . g:CFlags
let g:CxxGcc    = g:Gxx     . g:CxxFlags
let g:CxxClang  = g:Clangxx . g:CxxFlags

au FileType markdown map <F8>    :execute "!%"<CR>

au FileType c   map <F5>    :execute "!gdb %<.exe"<CR>
au FileType c   map <F8>    :execute "!%<.exe"<CR>
au FileType c   map <C-F8>  :execute "!cppcp %"<CR>
au FileType c   map <F7>    :execute "!" . g:CClang . " -std=c11 -O2"<CR>
au FileType c   map <C-F7>  :execute "!" . g:CGcc   . " -std=c11 -O0 -g"<CR>
au FileType c   map <F9>    :execute "!" . g:CClang . " -std=c99 -O2"<CR>
au FileType c   map <C-F9>  :execute "!" . g:CGcc   . " -std=c99 -O0 -g"<CR>

au FileType cpp map <F5>    :execute "!gdb %<.exe"<CR>
au FileType cpp map <F8>    :execute "!%<.exe"<CR>
au FileType cpp map <C-F8>  :execute "!cppcp %"<CR>
au FileType cpp map <F6>    :execute "!" . g:CxxGcc   . " -std=c++11 -O2"<CR>
au FileType cpp map <C-F6>  :execute "!" . g:CxxGcc   . " -std=c++11 -O0 -g"<CR>
au FileType cpp map <F7>    :execute "!" . g:CxxClang . " -std=c++17 -O2"<CR>
au FileType cpp map <C-F7>  :execute "!" . g:CxxGcc   . " -std=c++17 -O0 -g"<CR>
au FileType cpp map <F9>    :execute "!" . g:CxxClang . " -std=c++14 -O2"<CR>
au FileType cpp map <C-F9>  :execute "!" . g:CxxGcc   . " -std=c++14 -O0 -g"<CR>
au FileType cpp map <F11>   :execute "!" . g:CxxGcc   . " -std=c++98 -O2"<CR>
au FileType cpp map <C-F11> :execute "!" . g:CxxGcc   . " -std=c++98 -O0 -g"<CR>