" 文字コード
set fileencodings=utf-8,cp932

" 行番号
set number

" 相対行番号
set relativenumber

" カーソル
set cursorline

" シンタックス
syntax enable

" 検索ハイライト
set hlsearch

" Escを2回押すとハイライトを消す
nnoremap <Esc><Esc> :nohlsearch<CR>

" インクリメントサーチ
set incsearch

" Undoの永続化
if has('persistent_undo')
	let undo_path = expand('~/.vim/undo')
	exe 'set undodir=' .. undo_path
	set undofile
endif

" インデント
set smartindent

" クリップボート
set clipboard+=unnamed

" ステータスライン
set laststatus=2

" コマンドライン補完
set wildmenu

" ヘルプの日本語化
set helplang=ja

" Vimのプラグインを管理する
" dein.vim settings {{{
" install dir {{{
let s:dein_dir = expand('~/.cache/dein')
let s:dein_repo_dir = s:dein_dir . '/repos/github.com/Shougo/dein.vim'
" }}}

" dein installation check {{{
if &runtimepath !~# '/dein.vim'
  if !isdirectory(s:dein_repo_dir)
    execute '!git clone https://github.com/Shougo/dein.vim' s:dein_repo_dir
  endif
  execute 'set runtimepath^=' . s:dein_repo_dir
endif
" }}}

" begin settings {{{
if dein#load_state(s:dein_dir)
  call dein#begin(s:dein_dir)

  " .toml file
  let s:rc_dir = expand('~/.vim')
  if !isdirectory(s:rc_dir)
    call mkdir(s:rc_dir, 'p')
  endif
  let s:toml = s:rc_dir . '/dein.toml'

  " read toml and cache
  call dein#load_toml(s:toml, {'lazy': 0})

  " end settings
  call dein#end()
  call dein#save_state()
endif
" }}}

" plugin installation check {{{
if dein#check_install()
  call dein#install()
endif
" }}}

" plugin remove check {{{
let s:removed_plugins = dein#check_clean()
if len(s:removed_plugins) > 0
  call map(s:removed_plugins, "delete(v:val, 'rf')")
  call dein#recache_runtimepath()
endif
" }}}


" TABキーを押した際にタブ文字の代わりにスペースを入れる
set expandtab
set tabstop=2
set shiftwidth=2

" (参照)https://missing-semester-jp.github.io/2020/editors/
" TODO: ステータスライン
set laststatus=2

" By default, Vim doesn't let you hide a buffer (i.e. have a buffer that isn't
" shown in any window) that has unsaved changes. This is to prevent you from "
" forgetting about unsaved changes and then quitting e.g. via `:qa!`. We find
" hidden buffers helpful enough to di
set hidden

" This setting makes search case-insensitive when all characters in the string
" being searched are lowercase. However, the search becomes case-sensitive if
" it contains any capital letters. This makes searching more convenient.
set ignorecase
set smartcase

" Unbind some useless/annoying default key bindings.
nmap Q <Nop> " 'Q' in normal mode enters Ex mode. You almost never want this.

" Disable audible bell because it's annoying.
set noerrorbells visualbell t_vb=

" Enable mouse support. You should avoid relying on this too much, but it can
" sometimes be convenient.
set mouse+=a

" Try to prevent bad habits like using the arrow keys for movement. This is
" not the only possible bad habit. For example, holding down the h/j/k/l keys
" for movement, rather than using more efficient movement commands, is also a
" bad habit. The former is enforceable through a .vimrc, while we don't know
" how to prevent the latter.
" Do this in normal mode...
nnoremap <Left>  :echoe "Use h"<CR>
nnoremap <Right> :echoe "Use l"<CR>
nnoremap <Up>    :echoe "Use k"<CR>
nnoremap <Down>  :echoe "Use j"<CR>
" ...and in insert mode
inoremap <Left>  <ESC>:echoe "Use h"<CR>
inoremap <Right> <ESC>:echoe "Use l"<CR>
inoremap <Up>    <ESC>:echoe "Use k"<CR>
inoremap <Down>  <ESC>:echoe "Use j"<CR>