vim9script
# ---------------------------------------------------------------------------
# .vimrc
# ---------------------------------------------------------------------------
# Initialize:#{{{
#
augroup MyVimrcCmd
  autocmd!
augroup END

# Use Vim settings, rather than Vi settings (much better!).
# This must be first, because it changes other options as a side effect.
# Avoid side effects when it was already reset.
# Using `-u` argument has the side effect that the 'compatible' option will be on by default.
# If you want to avoid this, use `-N` argument.
if &compatible
  set nocompatible
endif

# Note: that the order of the following commands is important.
set encoding=utf-8
scriptencoding utf-8

# Note: Syntax generates based on settings in runtimepath
# so it is nececcary to initialize runtimepath and
# load file type highlight plugins prior to syntax on.
syntax on

# <: Maximum number of lines saved for each register.
# h: 'hlsearch' highlighting will not be restored.
# s: Maximum size of an item in Kbyte.
# ': Maximum number of previously edited files for which the marks are remembered.
# :: Maximum number of items in the command-line history to be saved.
# overwrite default setting
set viminfo=<100,h,s100,'1000,:100
set rtp+=/opt/homebrew/opt/fzf

# ---------------------------------------------------------------------------
# Load Plugins: #{{{
#
$PACKPATH = expand('~/.vim/pack/Bundle')
final plugins: dict<list<string>> = {'start': [], 'opt': []}
add(plugins.start, 'https://github.com/kana/vim-textobj-user')
add(plugins.start, 'https://github.com/kana/vim-operator-user')
add(plugins.opt, 'https://github.com/vim-jp/vimdoc-ja')
add(plugins.opt, 'https://github.com/mhinz/vim-signify')
add(plugins.opt, 'https://github.com/kana/vim-textobj-indent')
add(plugins.opt, 'https://github.com/kana/vim-textobj-syntax')
add(plugins.opt, 'https://github.com/kana/vim-textobj-line')
add(plugins.opt, 'https://github.com/kana/vim-textobj-fold')
add(plugins.opt, 'https://github.com/kana/vim-textobj-entire')
add(plugins.opt, 'https://github.com/thinca/vim-textobj-between')
add(plugins.opt, 'https://github.com/thinca/vim-textobj-comment')
add(plugins.opt, 'https://github.com/h1mesuke/textobj-wiw')
add(plugins.opt, 'https://github.com/sgur/vim-textobj-parameter')
add(plugins.opt, 'https://github.com/kana/vim-operator-replace')
add(plugins.opt, 'https://github.com/tpope/vim-surround')
# Make blockwise visual mode more useful.
# ex) shift v + shift i.
add(plugins.opt, 'https://github.com/kana/vim-niceblock')
add(plugins.opt, 'https://github.com/knsh14/vim-github-link')
add(plugins.opt, 'https://github.com/prabirshrestha/vim-lsp')
add(plugins.opt, 'https://github.com/mattn/vim-lsp-settings')
add(plugins.opt, 'https://github.com/prabirshrestha/asyncomplete.vim')
add(plugins.opt, 'https://github.com/prabirshrestha/asyncomplete-lsp.vim')
add(plugins.opt, 'https://github.com/github/copilot.vim')
add(plugins.opt, 'https://github.com/Eliot00/git-lens.vim.git')
add(plugins.opt, 'https://github.com/thinca/vim-quickrun')
add(plugins.opt, 'https://github.com/thinca/vim-qfreplace')
add(plugins.opt, 'https://github.com/itchyny/vim-qfedit')
# Live preview substitute result and
# highlight patterns and ranges for Ex commands in Command-line mode.
add(plugins.opt, 'https://github.com/markonm/traces.vim')
# Star for visual mode.
# ex) shift v + *.
add(plugins.opt, 'https://github.com/thinca/vim-visualstar')
add(plugins.opt, 'https://github.com/mattn/vim-maketable')
# Highlight each by a different color.
add(plugins.opt, 'https://github.com/daisuzu/rainbowcyclone.vim')
# Prettyprint vim variables.
# ex) :PP.
add(plugins.opt, 'https://github.com/thinca/vim-prettyprint')
add(plugins.opt, 'https://github.com/thinca/vim-showtime')
add(plugins.opt, 'https://github.com/LeafCage/vimhelpgenerator')
add(plugins.opt, 'https://github.com/lifepillar/vim-colortemplate')

def CreateHelpTags(path: string): void
  if isdirectory(path)
    execute 'helptags ' .. path
  endif
enddef

def MkdirIfNotExists(path: string): void
  if !isdirectory(path)
    mkdir(path, 'p')
  endif
enddef

def! g:InstallPackPlugins(): void #{{{
  # loop from `start` avoid dependency problems.
  for key in reverse(sort(keys(plugins)))
    const dir = expand($PACKPATH .. '/' .. key)
    MkdirIfNotExists(dir)

    for url in plugins[key]
      const dst = expand(dir .. '/' .. split(url, '/')[-1])
      if isdirectory(dst)
        # Plugin has already been installed.
        continue
      endif

      echomsg 'installing: ' .. dst
      system('git clone --recursive ' .. url .. ' ' .. dst)
      CreateHelpTags(expand(dst .. '/doc/'))
    endfor
  endfor
enddef #}}}

def! g:UpdatePackPlugins(): void #{{{
  var idx = 0
  const bufname = 'vimrc://update/plugins'
  # Needs escape not to use file-pattern.
  var prevbuf: number = bufnr(bufname)
  if prevbuf != -1
    # Needs `:` before Ex command with range.
    execute ':' .. prevbuf .. 'bwipeout!'
  endif
  var nr: number = bufadd(bufname)
  bufload(nr)
  execute ':' .. nr .. 'sb'
  ToScratch

  def PluginUpdateHandler(timer: number): void #{{{
    const plugin_dir = expand($PACKPATH .. '/' .. 'opt')
    const plugin_url = plugins.opt[idx]
    const plugin_name = split(plugin_url, '/')[-1]
    const dst = expand(plugin_dir .. '/' .. plugin_name)

    def DisplayUpdatedPlugin(name: string, channel: channel, msg: string): void
      appendbufline(nr, 0, name .. ': ' .. msg)
    enddef

    job_start(
      'git -C ' .. dst .. ' pull --ff --ff-only',
      {'callback': function(DisplayUpdatedPlugin, [plugin_name])},
    )

    def UpdateHelpTags(): void #{{{
      for key in keys(plugins)
        var dir = expand($PACKPATH .. '/' .. key)

        for url in plugins[key]
          const path = expand(dir .. '/' .. split(url, '/')[-1])
          if !isdirectory(path)
            # Plugin is not installed.
            continue
          endif

          echomsg 'helptags: ' .. path
          CreateHelpTags(expand(path .. '/doc/'))
        endfor
      endfor
    enddef #}}}

    ++idx
    if idx == len(plugins.opt)
      UpdateHelpTags()
    endif
  enddef #}}}

  idx = 0
  timer_start(100, function(PluginUpdateHandler), {'repeat': len(plugins.opt)})
enddef #}}}

var pidx = 0
def PackAddHandler(timer: number) #{{{
  const plugin_name = split(plugins.opt[pidx], '/')[-1]

  const plugin_path = expand($PACKPATH .. '/opt/' .. plugin_name)
  if isdirectory(plugin_path)
    execute 'packadd ' .. plugin_name
  endif

  ++pidx
  if pidx == len(plugins.opt)
    packadd comment
    packadd cfilter
    # Extended % matching.
    packadd matchit
    # For filetype plugin.
    doautocmd FileType

    try # For vim-lsp.
      lsp#enable()
    catch /E117/
    endtry

    try # For vim-signify.
      execute 'SignifyEnable'
    catch /E492/
    endtry
  endif
enddef #}}}

if has('vim_starting') && has('timers')
  for url in plugins.start
    const plugin_name = split(url, '/')[-1]
    const path = expand($PACKPATH .. '/start/' .. plugin_name)
    if !isdirectory(path)
      continue
    endif
    execute 'packadd ' .. plugin_name
  endfor
  autocmd MyVimrcCmd VimEnter * timer_start(1, PackAddHandler, {'repeat': len(plugins.opt)})
endif

# For ftdetect scripts to be loaded, need to write AFTER all `packadd!` commands.
filetype plugin indent on
#}}}

# ---------------------------------------------------------------------------
# Mouse: #{{{
#
# Normal mode and Terminal modes
# Visual mode, Insert mode, Command-line mode
# all previous modes when editing a help file.
set mouse=a
set nomousefocus
#}}}

# ---------------------------------------------------------------------------
# Edit: #{{{
#
set noswapfile
set nobackup
# The maximum number of items to show in the popup menu for Insert mode completion.
set pumheight=15
# Display the completion matches using the popup menu.
set wildoptions=pum
# Register '*' and '+' for all yank, delete, change and put operations.
set clipboard=unnamed,unnamedplus
set tabstop=2
set softtabstop=2
set shiftwidth=2
# Round indent to multiple of 'shiftwidth'.
set shiftround
set smarttab
# Spaces are used in indents.
set expandtab
# Influences the working of <BS>, <Del>, CTRL-W and CTRL-U in Insert mode.
# indent	allow backspacing over autoindent
# eol	    allow backspacing over line breaks (join lines)
# start	    allow backspacing over the start of insert; CTRL-W and CTRL-U
#           stop once at the start of insert.
set backspace=indent,eol,start
# Allow specified keys that move the cursor left/right to move to the previous/next line when the cursor is on the first/last character in the line.
# b    <BS>	 Normal and Visual
# s    <Space>	 Normal and Visual
# <    <Left>	 Normal and Visual
# >    <Right>	 Normal and Visual
# [    <Left>	 Insert and Replace
# ]    <Right>	 Insert and Replace
set whichwrap=b,s,<,>,[,]
# Command-line completion operates in an enhanced mode.
set wildmenu
# Command-line history.
set history=2000
set virtualedit+=block
set autoindent
# Smart indenting.
set smartindent cinwords=if,elif,else,for,while,try,except,finally,def,class
# Use the popup menu also when there is only one match.
# Only insert the longest common text of the matches.
set completeopt=menuone,longest
# Settings for Japanese folding.
set formatoptions+=mM
# Don't continue the comment line automatically.
set formatoptions-=ro
# Prevent overwriting format options.
autocmd MyVimrcCmd FileType * setlocal formatoptions-=ro
set nrformats=alpha,hex,bin,unsigned

# tags: #{{{
# ctags
set tags=./tags
set tags+=tags;
set tags+=./**/tags
#}}}

# grep: #{{{
set grepprg=git\ grep\ --no-color\ -n\ --column\ --untracked
set grepformat=%f:%l:%c:%m,%f:%l:%m
# Cannot be used --no-index and --untracked at the same time.
# --no-index: for not using git repository.
command! UseGitGrepNoIndex setlocal grepprg=git\ grep\ --no-color\ -n\ --column\ --no-index
command! UseDefaultGitGrep set grepprg=git\ grep\ --no-color\ -n\ --column\ --untracked
#}}}

# Quickfix: #{{{
# Open a new tab when jumping to a quickfix item, splitting buffers, using stag,
# CTRL-W_f or CTRL-W_F.
set switchbuf=newtab
# Open quickfix window automatically.
autocmd MyVimrcCmd QuickfixCmdPre make,grep,grepadd,vimgrep,vimgrepadd,helpgrep copen
#}}}

autocmd MyVimrcCmd InsertLeave * if &paste | set nopaste | endif
#}}}

# ---------------------------------------------------------------------------
# Color: #{{{
#
set t_Co=256
# Change cursor shape in insert mode.
if &term =~# 'xterm'
  &t_SI = "\<Esc>[5 q"
  &t_SR = "\<Esc>[3 q"
  &t_EI = "\<Esc>[1 q"
endif

# Visualization of the spaces at the end of the line. #{{{
# https://vim-jp.org/vim-users-jp/2009/07/12/Hack-40.html
augroup HighlightIdegraphicSpace
  autocmd!
  autocmd Colorscheme * highlight IdeographicSpace term=underline ctermbg=102 guibg=grey
  autocmd VimEnter,WinEnter * match IdeographicSpace /　\|\s\+$/
augroup END
#}}}

# github.com/satorunooshie/pairscolorscheme
try
  colorscheme pairs
catch /E185/
  # Install if not found.
  const colors_dir_path = expand('~/.vim/colors/')
  MkdirIfNotExists(colors_dir_path)
  system('git clone --depth 1 --recursive https://github.com/satorunooshie/pairscolorscheme ' .. colors_dir_path .. 'pairs')
  system('mv ' .. colors_dir_path .. 'pairs/colors/pairs.vim ' ..  colors_dir_path .. 'pairs.vim')
  colorscheme pairs
endtry
#}}}

# ---------------------------------------------------------------------------
# netrw: #{{{
#
# The percentage of the current netrw buffer's window to be used for the new window.
g:netrw_winsize = 30
# Preview window shown in a vertically split window.
g:netrw_preview = 1
# Hide swap files.
g:netrw_list_hide = '^.*.swp'
g:netrw_banner = 1
g:netrw_use_errorwindow = 0
g:netrw_localmkdiropt = ' -a'

# OperateUnderCursor accepts 'remove', 'copy', 'move'.
def! g:OperateUnderCursor(op: string): void #{{{
  const dir: string = expand('%:p:h') .. '/'
  const path: string = dir .. expand('<cfile>')
  var cmd: string = ''
  if op ==# 'remove'
    if isdirectory(path)
      delete(path, 'rf')
    else
      delete(path)
    endif
    return
  elseif op ==# 'copy'
    cmd = 'cp -a ' .. path .. ' ' .. input('Copying ' .. path .. ' to: ', dir, 'dir')
  elseif op ==# 'move'
    if isdirectory(path)
      cmd = 'mv ' .. path .. ' ' .. input('Moving ' .. path .. ' to: ', dir, 'dir')
    else
      cmd = 'mv ' .. path .. ' ' .. input('dst: ', dir, 'file')
    endif
  else
    return
  endif
  const out: string = system(cmd)
  histadd('cmd', 'call system("' .. cmd .. '")')
  if v:shell_error
    echoerr out
  endif
enddef #}}}

def NetrwRemap(): void
  nnoremap <buffer> D <Cmd>call g:OperateUnderCursor('remove') \| :e!<CR>
  nnoremap <buffer> CP <Cmd>call g:OperateUnderCursor('copy') \| :e!<CR>
  nnoremap <buffer> MV <Cmd>call g:OperateUnderCursor('move') \| :e!<CR>
  # Overwrite <C-l>.
  nnoremap <buffer> <C-l> <Cmd>tabnext<CR>
enddef
autocmd MyVimrcCmd FileType netrw call NetrwRemap()
#}}}

# ---------------------------------------------------------------------------
# View: #{{{
#
set number
# Always draw the signcolumn to prevent rattling.
set signcolumn=yes
set cursorline
# Highlight only numbers.
set cursorlineopt=number
#}}}

# Avoid `Thanks for flying Vim`.
set title
set nowrap
# When a bracket is inserted, briefly jump to the matching one.
set showmatch
# Tenths of a second to show the matching paren is 0.1 sec.
set matchtime=1
# Always show status line.
set laststatus=2
# Always display the line with tab page labels.
set showtabline=2
# Show (partial) command in the last line of the screen.
set showcmd
# Number of screen lines to use for the command-line.
# Setting as 1 shows Press ENTER or type command to continue when a long
# message is displayed.
set cmdheight=2
# Never show the current mode in the last line of the screen.
set noshowmode
# Show unprintable characters hexadecimal as <xx> instead of using ^C and ~C.
# When inserting, can append a character with CTRL-V uxxxx.
set display=uhex
# Default height for a preview window.
set previewheight=12
# Not showing tabs as CTRL-I is displayed, display $ after end of line.
set nolist
set listchars=tab:>-,extends:<,precedes:>,trail:-,eol:$,nbsp:%

# Tabline settings. #{{{
g:current_dir = fnamemodify(getcwd(), ':p:~:h') .. ' '
def! g:MakeTabLine(): string #{{{
  def TabpageLabel(n: number): string #{{{
    const title = gettabwinvar(n, 0, 'title')
    if title !=# ''
      return title
    endif
    def IsModified(bufnr: number): string #{{{
      return getbufvar(bufnr, '&modified') ? '+' : ''
    enddef #}}}
    const bufnrs: list<number> = tabpagebuflist(n)
    const buflist = join(mapnew(bufnrs, (_, bufnr: number) => bufnr .. IsModified(bufnr)), ',')
    const curbufnr: number = bufnrs[tabpagewinnr(n) - 1]
    const label = '[' .. buflist .. ']' .. pathshorten(bufname(curbufnr))
    const hi = n == tabpagenr() ? '%#TabLineSel#' : '%#TabLine#'
    return '%' .. n .. 'T' .. hi .. label .. '%T%#TabLineFill#'
  enddef #}}}
  const titles: list<string> = map(range(1, tabpagenr('$')), (_, bufnr: number) => TabpageLabel(bufnr))
  const sep = ' | '
  const tabpages = join(titles, sep) .. sep .. '%#TabLineFill#%T'
  g:current_dir = fnamemodify(getcwd(), ':p:~:h') .. ' '
  return tabpages .. '%=' .. g:current_dir
enddef #}}}

set tabline=%!MakeTabLine()
#}}}

# StatusLine settings. #{{{
def! g:Path(): string #{{{
  const statusline_path_max_len = 50
  var p = substitute(expand('%:.:h'), expand('$HOME'), '~', '')
  if len(p) > statusline_path_max_len
    return pathshorten(simplify(p))
  endif
  return p
enddef #}}}

def! g:RealSyntaxName(): string #{{{
  const syn_id = synID(line('.'), col('.'), 1)
  const real_syn_id = synIDtrans(syn_id)
  return syn_id == real_syn_id ? 'Normal' : synIDattr(real_syn_id, 'name')
enddef #}}}

def! g:Mode(): string #{{{
  const modes: dict<string> = {
    n: 'NORMAL', v: 'VCHAR', V: 'VLINE', '': 'VBLOCK',
    i: 'INSERT', R: 'REPLACE', s: 'SCHAR', S: 'SLINE', '': 'SBLOCK',
    t: 'JOB', c: 'COMMAND', r: 'PROMPT', '!': 'SHELL',
  }
  return modes[mode()[0]]
enddef #}}}

# Return the current file size in human readable format.
def! g:FileSize(): string #{{{
  var bytes: float = &encoding ==# &fileencoding
    || &fileencoding ==# ''
    ? line2byte(line('$') + 1) - 1.0
    : getfsize(expand('%')) - 0.0
  var i: number = 0
  while bytes >= 1024.0
    bytes /= 1024.0
    ++i
  endwhile
  const sizes: list<string> = ['B', 'KB', 'MB', 'GB']
  return bytes > 0 ? printf('%.2f%s', bytes, sizes[i]) : ''
enddef #}}}

def! g:FileType(): string #{{{
  return strlen(&ft) > 0 ? '[' .. &ft .. ']' : '[*]'
enddef #}}}

def! g:SyntaxName(): string #{{{
  return synIDattr(synID(line('.'), col('.'), 1), 'name')
enddef #}}}

def SetFullStatusLine(): void #{{{
  setlocal statusline=

  setlocal statusline+=%#StatusLineBufNr#\ %-1.2n
  setlocal statusline+=\ %h%#StatusLineFlag#%m%r%w
  setlocal statusline+=%#StatusLinePath#\ %-0.50{Path()}%0*
  setlocal statusline+=%#StatusLineFileName#\/%t
  setlocal statusline+=%#StatusLineFileSize#\ \(%{FileSize()}\)
  # setlocal statusline+=%#StatusLineTermEnc#(%{&termencoding},
  # setlocal statusline+=%#StatusLineFileEnc#%{&fileencoding},
  # setlocal statusline+=%#StatusLineFileFormat#%{&fileformat}\)
  setlocal statusline+=%#StatusLineFileType#\ %{FileType()}
  setlocal statusline+=%#StatusLineMode#\ %{Mode()}
  setlocal statusline+=%#StatusLineSyntaxName#\ %{SyntaxName()}\ %0*
  setlocal statusline+=%#StatusLineRealSyntaxName#\ %{RealSyntaxName()}\ %0*

  # Separation point between alignment sections.
  setlocal statusline+=%=
  setlocal statusline+=%#StatusLineCurrentChar#\ %B[%b]
  setlocal statusline+=%#StatusLinePosition#\ %-10.(%l/%L,%c%)
  setlocal statusline+=%#StatusLinePositionPercentage#\ %p%%
enddef #}}}

# Set a simple statusline when the current buffer is not active.
def SetSimpleStatusLine(): void #{{{
  setlocal statusline=

  setlocal statusline+=%#StatusLineNCPath#%-0.20{Path()}%0*
  setlocal statusline+=%#StatusLineNCFileName#\/%t
enddef #}}}

augroup StatusLine #{{{
  autocmd!
  autocmd BufEnter * SetFullStatusLine()
  autocmd BufLeave,BufNew,BufRead,BufNewFile * SetFullStatusLine()
  # autocmd BufLeave,BufNew,BufRead,BufNewFile * SetSimpleStatusLine()
augroup END #}}}
#}}}

# ---------------------------------------------------------------------------
# Search: #{{{
#
# Wrap around the end of the file.
set nowrapscan
set incsearch
set ignorecase
set smartcase
set hlsearch
#}}}

# ---------------------------------------------------------------------------
# Files: #{{{
#
var git_root = ''
var git_root_cache = ''
def SetGitRoot(): void #{{{
  if g:current_dir !=# git_root_cache
    git_root_cache = g:current_dir
    git_root = system('git rev-parse --show-toplevel')
    if git_root =~# '^fatal'
      git_root = ''
    else
      git_root = git_root->trim()->expand()
    endif
  endif
enddef #}}}
command! -bar SetGitRoot SetGitRoot()

command! -bar ToScratch setlocal buftype=nofile bufhidden=hide noswapfile
command! -bar ToScratchForFiles ToScratch | setlocal iskeyword+=.
command! -bar -nargs=? ModsNew <mods> new
  | if len(<q-args>) > 0
  | edit modsnew://output/<args>
  | endif

# List files recursively in the specified directory.
# `./` after `Files:` is necessary to avoid `expand()` unexpected error(E944).
command! -bar -nargs=1 -complete=dir Files <mods> ModsNew Files:./<args>
  | ToScratchForFiles
  | setline(1, system('find "<args>" -path "*/.*" -type d -prune -o -type f -print')->split('\n'))
command! FilesBuffer <mods> Files %:p:h
command! FilesCurrent <mods> Files .

# Filter files that are not readable and not in the git repository if it exists.
def FilterFiles(files: list<string>): list<string> #{{{
  return files->filter((_, v: string) => v->expand()->filereadable())->mapnew((_, v: string) => v->trim()->expand()->substitute(expand('$HOME'), '~', ''))->filter((_, v: string) => (empty(git_root) || expand(v) =~# git_root) && v !~# '\.git/')
enddef #}}}
command! MRU <mods> ModsNew MRU
  | SetGitRoot
  | ToScratchForFiles
  | setline(1, v:oldfiles->FilterFiles())

command! -nargs=1 -complete=command L <mods> ModsNew <args>
  | ToScratchForFiles
  | setline(1, execute(<q-args>)->split('\n'))
command! Buffers <mods> L buffers
command! ScriptNames <mods> ModsNew ScriptNames
  | ToScratchForFiles
  | setline(1, execute('scriptnames')->split('\n')->map((_, v: string) => split(v, ': ')[1]))
#}}}

# ---------------------------------------------------------------------------
# Utilities: #{{{
#
# :TCD to the directory of the current file or specified path. #{{{
command! -nargs=? -complete=dir -bang TCD ChangeCurrentDir('<args>', '<bang>')
def ChangeCurrentDir(directory: string, bang: string): void
  if directory == ''
    if &buftype !=# 'terminal'
      tcd %:p:h
    endif
  else
    execute 'tcd ' .. directory
  endif

  if bang == ''
    pwd
  endif
enddef
#}}}

# Restore cursor position automatically. #{{{
def RestoreCursorPosition(): void
  if line("'\"") > 1 && line("'\"") <= line("$") &&
      &filetype !~# 'commit' && index(['xxd', 'gitrebase'], &filetype) == -1
    normal! g`"
  endif
enddef
autocmd MyVimrcCmd BufReadPost * RestoreCursorPosition()
#}}}

autocmd MyVimrcCmd FileType proto setlocal shiftwidth=2 tabstop=2 makeprg=buf

# Sanitize the command line history. #{{{
def SanitizeHistory(): void
  var cmd = histget(":", -1)
  if cmd ==# "x" || cmd ==# "xa" || cmd ==# "e!" ||
      cmd ==# "vs" || cmd =~# "^w\\?q\\?a\\?!\\?$"
    histdel(":", -1)
  endif
enddef
autocmd MyVimrcCmd ModeChanged c:* SanitizeHistory()
#}}}

# Diff before save. #{{{
command! DiffOrig vert new | set bt=nofile | execute 'r ++edit ' .. expand('#') | deletebufline('%', 1) | diffthis | wincmd p | diffthis
#}}}

# Convert location list to quickfix list. #{{{
command! Loc2Qf call setqflist(getloclist(0)) | lclose | copen
#}}}

# Convert quickfix list to location list. #{{{
command! Qf2Loc call setloclist(0, getqflist()) | cclose | lopen
#}}}
#}}}

# ---------------------------------------------------------------------------
# Plugins: #{{{
#
# ---------------------------------------------------------------------------
# termdebug: #{{{
#
if !exists('g:termdebug_config')
  g:termdebug_config = {}
endif

g:termdebug_config['winbar'] = 0
g:termdebug_config['popup'] = 0
g:termdebug_config['sign'] = '>>'
#}}}

# ---------------------------------------------------------------------------
# git-lens: #{{{
#
g:GIT_LENS_CONFIG = {
  blame_prefix: '    ---- ',
  blame_highlight: 'LineNr',
  blame_wrap: false,
  blame_empty_line: false,
  blame_delay: 50,
}
#}}}

# ---------------------------------------------------------------------------
# vim-quickrun: #{{{
#
if !exists('g:quickrun_config')
  g:quickrun_config = {}
endif

g:quickrun_config['_'] = {
  'outputter/buffer/split': ':botright 8sp',
  'outputter/buffer/close_on_empty': 1,
  'runner': 'job',
}
#}}}

# ---------------------------------------------------------------------------
# vimhelpgenerator: #{{{
#
g:vimhelpgenerator_defaultlanguage = 'en'
#}}}

# ---------------------------------------------------------------------------
# copilot: #{{{
#
imap <C-C><C-N> <Plug>(copilot-next)
imap <C-C><C-P> <Plug>(copilot-previous)
#}}}

# ---------------------------------------------------------------------------
# vim-lsp: #{{{
#
g:lsp_fold_enabled = 0
g:lsp_diagnostics_echo_cursor = 1
g:lsp_diagnostics_virtual_text_enabled = 0
g:lsp_tagfunc_source_methods = ['definition']

def LspBufferEnabled(): void
  setlocal omnifunc=lsp#complete
  setlocal tagfunc=lsp#tagfunc
enddef

augroup LspInstall
  autocmd!
  autocmd User lsp_buffer_enabled LspBufferEnabled()
augroup END

# Format and organize imports on save.
def GoFormatAndOrganizeImports(): void
  silent execute 'LspDocumentFormatSync'
  silent execute 'LspCodeActionSync source.organizeImports'
enddef
autocmd MyVimrcCmd BufWritePre *.go GoFormatAndOrganizeImports()

g:lsp_settings = {
  gopls: {
    initialization_options: {
      matcher: 'fuzzy',
      deepCompletion: false,
      usePlaceholders: false,
      symbolMatcher: 'fuzzy',
      symbolStyle: 'full',
      gofumpt: true,
      staticcheck: false,
      codelenses: {
        gc_details: true,
        test: true,
      },
    },
  }
}

# if not exists or not writable, do not turn on verbose logging.
# filewritable returns 2 when the path is a directory and writable,
# and returns 1 when the path is writable, so it is compared to 0 to convert to Bool.
if filewritable(expand('~/tmp')) !=# 0
  g:lsp_log_verbose = 1
  g:lsp_log_file = expand('~/tmp/vim-lsp-' .. strftime('%Y%m%d') .. '.log')
  g:lsp_settings['gopls']['cmd'] = ['gopls', '-logfile', expand('~/tmp/gopls-' .. strftime('%Y%m%d') .. '.log')]
endif
#}}}

# ---------------------------------------------------------------------------
# asyncomplete: #{{{
#
g:asyncomplete_enable_for_all = 0
#}}}

#}}}

# ---------------------------------------------------------------------------
# Key Mappings: #{{{
#
nnoremap <silent> <Space>ev <Cmd>edit $MYVIMRC<CR>
nnoremap <silent> <Space>el <Cmd>edit $MYLOCALVIMRC<CR>

nnoremap <silent> <Space>tv <Cmd>tabedit $MYVIMRC<CR>
nnoremap <silent> <Space>tl <Cmd>tabedit $MYLOCALVIMRC<CR>

nnoremap <silent> <Space>rv <Cmd>source $MYVIMRC<CR>

# Recommended by :help options.txt for indenting
# When typing '#' as the first character in a new line, the indent for
# that line is removed, the '#' is put in the first column.  The indent
# is restored for the next line.  If you don't want this, use this
# mapping: ":inoremap # X^H#", where ^H is entered with CTRL-V CTRL-H.
# When using the ">>" command, lines starting with '#' are not shifted
# right.
inoremap \# X<C-H><C-V>#
nnoremap <silent> <Space>cl <Cmd>call popup_clear()<CR>
nnoremap <silent> <Space>hc <Cmd>helpclose<CR>
nnoremap <silent> <C-n> <Cmd>bnext<CR>
nnoremap <silent> <C-p> <Cmd>bprev<CR>
nnoremap <silent> <C-k> {
nnoremap <silent> <C-j> }
vnoremap <silent> <C-k> {
vnoremap <silent> <C-j> }
nnoremap <silent> <C-h> <Cmd>tabprev<CR>
nnoremap <silent> <C-l> <Cmd>tabnext<CR>

nnoremap <Space>op <Cmd>set paste! paste?<CR>
nnoremap <Space>on <Cmd>setlocal number! cursorline! number? cursorline?<CR>
nnoremap <Space>ol <Cmd>setlocal list! list?<CR>
nnoremap <ESC><ESC> :nohlsearch<CR>

nnoremap <silent> <Space>wd <Cmd>windo diffthis<CR>
# Browse oldfiles filtered by pattern.
nnoremap <Leader>e :<C-u>/ oldfiles<Home>browse filter /
nnoremap <Space>b :<C-u>buffer <C-d>
# Open the directory of the current file.
nnoremap <Leader>d <Cmd>vertical split %:h<CR>
# Improve replacement of twice the width of characters in linewise.
xnoremap <expr> r mode() ==# 'V' ? "\<C-v>0o$r" : "r"

# Enable repeatedly increment or decrement in visual mode.
vnoremap <c-a> <c-a>gv
vnoremap <c-x> <c-x>gv

# Disable overridding the register in visual mode.
vnoremap p "_dP
vnoremap P "_dp
# Disable overridding the register in normal mode.
nnoremap s "_s
nnoremap c "_c
nnoremap C "_C
nnoremap D "_D
# Except dd, df, dt.
nnoremap d "_d
nnoremap dd dd
nnoremap df df
nnoremap dt dt

# Emacs like key bindings.
cnoremap <C-a> <Home>
cnoremap <C-e> <End>
cnoremap <C-p> <Up>
cnoremap <C-n> <Down>
cnoremap <C-f> <Right>
cnoremap <C-b> <Left>
inoremap <C-k> <C-o>D
inoremap <C-u> <C-o>dd

# Full path.
cabbrev %% %:p:h
nnoremap Y y$
nnoremap X ^x
noremap <Space>h ^
noremap <Space>l $

# Move search results to the middle of the screen.
nnoremap n nzz
nnoremap N Nzz
nnoremap * *zz
nnoremap # #zz
nnoremap g* g*zz
nnoremap g# g#zz

# Move to the position previously changed or yanked.
nnoremap mlc '[
nnoremap mlc ']
# Select previously changed or yanked.
nnoremap slc '[v']

# 'Quote'
onoremap aq a'
xnoremap aq a'
onoremap iq i'
xnoremap iq i'

# \"Double quote\"
onoremap ad a"
xnoremap ad a"
onoremap id i"
xnoremap id i"

# {Curly bracket}
onoremap ac a}
xnoremap ac a}
onoremap ic i}
xnoremap ic i}

# <aNgle bracket>
onoremap an a>
xnoremap an a>
onoremap in i>
xnoremap in i>

# [sqUare bracket]
onoremap au a]
xnoremap au a]
onoremap iu i]
xnoremap iu i]

# ---------------------------------------------------------------------------
# Custom commands: #{{{
#
# :TCD to the directory of the current file or specified path.
nnoremap <silent> <Space>cd <Cmd>TCD<CR>
# Copy current path.
# Use system() to avoid showing `Press ENTER or type command to continue` message.
nnoremap <silent> <Space>cp <Cmd>call system('echo ' .. expand('%') .. ' \| pbcopy')<CR>
# Format json.
nnoremap <silent> <Space>jq <Cmd>%!jq '.'<CR>
# Force save.
cmap w!! w !sudo tee > /dev/null %
# checkout file.
nnoremap <silent> <Leader>co <Cmd>call system('git checkout -- ' .. expand('%')) \| e!<CR>
#}}}

# ---------------------------------------------------------------------------
# Plugins: #{{{
#
# vim-quickrun: #{{{
nmap <Leader>r <Plug>(quickrun)
omap <Leader>r <Plug>(quickrun)
xmap <Leader>r <Plug>(quickrun)
#}}}

# rainbowcyclone.vim: #{{{
nmap c/ <Plug>(rc_search_forward)
nmap c? <Plug>(rc_search_backward)
nmap c* <Plug>(rc_search_forward_with_cursor)
nmap c# <Plug>(rc_search_backward_with_cursor)
nmap cn <Plug>(rc_search_forward_with_last_pattern)
nmap cN <Plug>(rc_search_backward_with_last_pattern)
# nmap <Esc><Esc> <Plug>(rc_reset):nohlsearch<CR>
# nnoremap <Esc><Esc> <Cmd>RCReset<CR>:nohlsearch<CR>
#}}}

# git-lens: #{{{
nnoremap <silent> <Space>gl <Cmd>call ToggleGitLens()<CR>
#}}}

# vim-lsp: #{{{
def! g:LspDocumentDiagnostics(): void
  execute 'LspDocumentDiagnostics'
  # Technically it is better to wait for the completion of the LSP.
  if !getloclist(0)->empty()
    Loc2Qf
  endif
enddef
def! g:LspDocumentSymbolFiltered(): void
  silent execute 'LspDocumentSymbol'
  # Wait for the completion of the LSP.
  sleep 10m
  execute 'Cfilter function\|method'
enddef
nnoremap <silent> <Space>rf <Cmd>LspReferences<CR>
nnoremap <silent> <Space>rn <Cmd>LspRename<CR>
nnoremap <silent> <Space>im <Cmd>LspImplementation<CR>
nnoremap <silent> <Space>ho <Cmd>LspHover<CR>
nnoremap <silent> <Space>ds <Cmd>call LspDocumentSymbolFiltered()<CR>
nnoremap <silent> <Space>dd <Cmd>call LspDocumentDiagnostics()<CR>
nnoremap <silent> <Space>ca <Cmd>LspCodeAction<CR>
nnoremap <silent> <Space>nr <Cmd>LspNextError<CR>
nnoremap <silent> <Space>pr <Cmd>LspPreviousError<CR>
#}}}

# asyncomplete: #{{{
g:asyncomplete_enabled_filetype = {}

# Toggle asyncomplete for the current filetype.
# Handle exceptions raised by lazy loading of plugins.
def! g:ToggleAsyncompleteForFiletype() #{{{
  const enabled = get(g:asyncomplete_enabled_filetype, &ft, 0)
  if enabled
    remove(g:asyncomplete_enabled_filetype, &ft)
    try
      call g:asyncomplete#disable_for_buffer()
    catch /E117/
    endtry
    return
  endif
  try
    call g:asyncomplete#enable_for_buffer()
  catch /E117/
    echomsg 'asyncomplete not loaded yet.'
    return
  endtry
  # If the plugin is not loaded, it is conceivable that this will be called
  # again without being applied to the current buffer at least, so set the
  # flag only when successful.
  g:asyncomplete_enabled_filetype[&ft] = 1
enddef #}}}

nnoremap <silent> <Space>tac <Cmd>call g:ToggleAsyncompleteForFiletype()<CR>

# Apply asyncomplete settings to the current buffer if the filetype is
# enabled.
# Handle exceptions raised by lazy loading of plugins.
def! g:ApplyAsyncompleteSettingByFileType() #{{{
  const enabled = get(g:asyncomplete_enabled_filetype, &ft, 0)
  if enabled
    try
      call g:asyncomplete#enable_for_buffer()
    catch /E117/
    endtry
    return
  endif
  try
    call g:asyncomplete#disable_for_buffer()
  catch /E117/
  endtry
enddef #}}}

# Use BufEnter to apply settings when switching between buffers, as FileType
# is triggered only when the filetype changes or when a file is first opened.
# Buffer ensures that the asyncomplete settings are applied even when the
# filetype remains the same.
augroup AsyncompleteFiletypeToggle
  autocmd!
  autocmd BufEnter * call g:ApplyAsyncompleteSettingByFileType()
augroup END
#}}}

#}}}
#}}}

# ---------------------------------------------------------------------------
# External Settings: #{{{
#
$MYLOCALVIMRC = expand('~/.vim/.local.vimrc')
if 1 && filereadable($MYLOCALVIMRC)
  source $MYLOCALVIMRC
endif
#}}}
#}}}