scriptencoding utf-8

" Change fillchars for folding, vertical split, end of buffer, and message
" separator
set fillchars=fold:\ ,foldsep:\ ,foldopen:,foldclose:,vert:\│,eob:\ ,msgsep:‾,diff:╱

" Time in milliseconds to wait for a mapped sequence to complete
set timeoutlen=500

" For CursorHold events
set updatetime=500

" Always use clipboard for all delete, yank, change, and put operations
if !empty(provider#clipboard#Executable())
  set clipboard+=unnamedplus
endif

" Ignore certain files and folders when globing
set wildignore+=*.o,*.obj,*.dylib,*.bin,*.dll,*.exe
set wildignore+=*/.git/*,*/.svn/*,*/__pycache__/*,*/build/**
set wildignore+=*.jpg,*.png,*.jpeg,*.bmp,*.gif,*.tiff,*.svg,*.ico
set wildignore+=*.pyc,*pkl
set wildignore+=*.DS_Store
set wildignore+=*.aux,*.bbl,*.blg,*.brf,*.fls,*.fdb_latexmk,*.synctex.gz,*.xdv
set wildignorecase " ignore file and dir name cases in cmd-completion

" Set up backup directory
let g:backupdir=expand(stdpath('data') . '/backup//')
let &backupdir=g:backupdir

" Skip backup for patterns in option wildignore
let &backupskip=&wildignore
set backup " create backup for files
set backupcopy=yes " copy the original file to backupdir and overwrite it

" Set up swap directory
let g:swapdir=expand(stdpath('data') . '/swap//')
let &directory=g:swapdir

" Set up persistent undo
set undofile
let g:undodir=expand(stdpath('data') . '/undo//')
let &undodir=g:undodir

" General tab settings
set tabstop=2       " number of visual spaces per TAB
set softtabstop=2   " number of spaces in tab when editing
set shiftwidth=2    " number of spaces to use for autoindent
set expandtab       " expand tab to spaces so that tabs are spaces

" Set matching pairs of characters and highlight matching brackets
set matchpairs+=<:>,「:」,『:』,【:】,“:”,‘:’,《:》

" Show line number and relative line number
set number relativenumber

" Ignore case in general, but become case-sensitive when uppercase is present
set ignorecase smartcase

" File and script encoding settings for vim
set fileencoding=utf-8
set fileencodings=ucs-bom,utf-8,cp936,gb18030,big5,euc-jp,euc-kr,latin1

" Break line at predefined characters
set linebreak

" Character to show before the lines that have been soft-wrapped
set showbreak=↪

" List all matches and complete till longest common string
set wildmode=list:longest

" Minimum lines to keep above and below cursor when scrolling
set scrolloff=3

" Use mouse to select and resize windows, etc.
set mouse=n
set mousemodel=popup  " Set the behavior of mouse
set mousescroll=ver:1,hor:0

" Fileformats to use for new files
set fileformats=unix,dos

" Ask for confirmation when handling unsaved or read-only files
set confirm

" Do not use visual and errorbells
set visualbell noerrorbells

" Number of commands and search history to keep
set history=500

" Use list mode and customized listchars (show characters for whitespace)
set list listchars=tab:▸\ ,extends:❯,precedes:❮,nbsp:␣

" Auto-write the file base on some condition
set autowrite

" Show hostname and full path of file on the window title
set title
set titlestring=
set titlestring=%{utils#Get_titlestr()}

" Do not show "match xx of xx" and other messages during auto-completion
set shortmess+=c

" Do not show search match count on bottom right
set shortmess+=S

" Disable showing intro message (:intro)
set shortmess+=I

set messagesopt=hit-enter,history:500

" Completion behavior
" set completeopt+=noinsert  " Auto select the first completion entry
set completeopt+=menuone  " Show  menu even if there is only one item
set completeopt-=preview  " Disable the preview window

set pumheight=10  " Maximum number of items to show in popup menu
set pumblend=5  " pseudo transparency for completion menu

set winblend=0  " pseudo transparency for floating window
set winborder=none

" Insert mode key word completion setting
set complete+=kspell complete-=w complete-=b complete-=u complete-=t

set spelllang=en,cjk  " Spell languages
set spellsuggest+=9  " Show 9 spell suggestions at most

"  Align indent to next multiple value of shiftwidth
set shiftround

" Virtual edit is useful for visual block edit
set virtualedit=block

" Correctly break multi-byte characters such as CJK
set formatoptions+=mM

" Text after this column number is not highlighted
set synmaxcol=250

set nostartofline

" External program to use for grep command
if executable('rg')
  set grepprg=rg\ --vimgrep\ --no-heading\ --smart-case
  set grepformat=%f:%l:%c:%m
endif

" Enable true color support
set termguicolors

" Set up cursor color and shape in various modes, ref:
" https:;//github.com/neovim/neovim/wiki/FAQ#how-to-change-cursor-color-in-the-terminal
set guicursor=n-v-c:block-Cursor/lCursor,i-ci-ve:ver25-Cursor2/lCursor2,r-cr:hor20,o:hor20

set signcolumn=yes:1

" Remove certain character from file name pattern matching
set isfname-==
set isfname-=,

" diff options
set diffopt=
set diffopt+=vertical  " show diff in vertical position
set diffopt+=filler    " show filler for deleted lines
set diffopt+=closeoff  " turn off

set shell=/bin/ash