feat(autocomplete): add nvim-cmp support

autoload/SpaceVim.vim

@@ -315,7 +315,9 @@ let g:spacevim_realtime_leader_guide   = 1
 "   let g:spacevim_enable_key_frequency = 1
 " <
 let g:spacevim_enable_key_frequency = 0
-if (has('python3') 
+if has('nvim-0.5.0')
+  let g:spacevim_autocomplete_method = 'nvim-cmp'
+elseif (has('python3') 
       \ && (SpaceVim#util#haspy3lib('neovim')
       \ || SpaceVim#util#haspy3lib('pynvim'))) &&
       \ (has('nvim') || (has('patch-8.0.0027')))
@@ -1384,7 +1386,6 @@ function! SpaceVim#end() abort
   elseif g:spacevim_vim_help_language ==# 'ja'
     let &helplang = 'jp'
   endif
-  ""
   " generate tags for SpaceVim
   let help = fnamemodify(g:_spacevim_root_dir, ':p:h') . '/doc'
   try
@@ -1392,8 +1393,6 @@ function! SpaceVim#end() abort
   catch
     call SpaceVim#logger#warn('Failed to generate helptags for SpaceVim')
   endtry
-
-  ""
   " set language
   if !empty(g:spacevim_language)
     silent exec 'lan ' . g:spacevim_language

autoload/SpaceVim/api/logger.vim

@@ -52,7 +52,7 @@ endfunction
 function! s:self._build_msg(msg, l) abort
   let msg = a:msg
   let time = strftime('%H:%M:%S')
-  let log = printf('[ %s ] [%s] [%00.3f] [ %s ] %s',
+  let log = printf('[ %s ] [%s] [%00.3f] [ %5s ] %s',
         \ self.name,
         \ time,
         \ reltimefloat(reltime(self.clock)),

autoload/SpaceVim/autocmds.vim

@@ -12,6 +12,7 @@ let s:VIM = SpaceVim#api#import('vim')
 
 "autocmds
 function! SpaceVim#autocmds#init() abort
+  call SpaceVim#logger#debug('init SpaceVim_core autocmd group')
   augroup SpaceVim_core
     au!
     autocmd BufWinEnter quickfix nnoremap <silent> <buffer>

autoload/SpaceVim/default.vim

@@ -147,6 +147,7 @@ endfunction
 "}}}
 
 function! SpaceVim#default#layers() abort
+  call SpaceVim#logger#debug('init default layer list.')
   call SpaceVim#layers#load('autocomplete')
   call SpaceVim#layers#load('checkers')
   call SpaceVim#layers#load('format')
@@ -159,6 +160,7 @@ function! SpaceVim#default#layers() abort
 endfunction
 
 function! SpaceVim#default#keyBindings() abort
+  call SpaceVim#logger#debug('init default key bindings.')
   " yank and paste
   if has('unnamedplus')
     xnoremap <Leader>y "+y

autoload/SpaceVim/layers/autocomplete.vim

@@ -86,6 +86,22 @@ function! SpaceVim#layers#autocomplete#plugins() abort
           \ 'on_event' : 'InsertEnter',
           \ 'loadconf' : 1,
           \ }])
+  elseif g:spacevim_autocomplete_method ==# 'nvim-cmp'
+    " use bundle nvim-cmp
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/nvim-cmp', {
+          \ 'merged' : 0,
+          \ 'loadconf' : 1,
+          \ }])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/cmp-buffer', {
+          \ 'merged' : 0,
+          \ }])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/cmp-path', {
+          \ 'merged' : 0,
+          \ }])
+    call add(plugins, [g:_spacevim_root_dir . 'bundle/lspkind-nvim', {
+          \ 'merged' : 0,
+          \ 'loadconf' : 1,
+          \ }])
   elseif g:spacevim_autocomplete_method ==# 'asyncomplete'
     call add(plugins, ['prabirshrestha/asyncomplete.vim', {
           \ 'loadconf' : 1,
@@ -120,9 +136,12 @@ function! SpaceVim#layers#autocomplete#plugins() abort
           \ 'on_event' : 'CompleteDone',
           \ 'loadconf_before' : 1,
           \ }])
+    if g:spacevim_autocomplete_method !=# 'nvim-cmp'
+      " this plugin use same namespace as nvim-cmp
       call add(plugins, [g:_spacevim_root_dir . 'bundle/CompleteParameter.vim',
             \ { 'merged' : 0}])
     endif
+  endif
   return plugins
 endfunction
 

autoload/SpaceVim/layers/lsp.vim

@@ -108,6 +108,10 @@ function! SpaceVim#layers#lsp#plugins() abort
     call add(plugins, [g:_spacevim_root_dir . 'bundle/nvim-lspconfig', {'merged' : 0, 'loadconf' : 1}])
     if g:spacevim_autocomplete_method ==# 'deoplete'
       call add(plugins, [g:_spacevim_root_dir . 'bundle/deoplete-lsp', {'merged' : 0}])
+    elseif g:spacevim_autocomplete_method ==# 'nvim-cmp'
+      call add(plugins, [g:_spacevim_root_dir . 'bundle/cmp-nvim-lsp', {
+            \ 'merged' : 0,
+            \ }])
     endif
   elseif SpaceVim#layers#isLoaded('autocomplete') && get(g:, 'spacevim_autocomplete_method') ==# 'coc'
     " nop

autoload/SpaceVim/mapping/g.vim

@@ -7,6 +7,7 @@
 "=============================================================================
 
 function! SpaceVim#mapping#g#init() abort
+  call SpaceVim#logger#debug('init g key bindings')
   nnoremap <silent><nowait> [G] :<c-u>LeaderGuide "g"<CR>
   nmap g [G]
   let g:_spacevim_mappings_g = {}

autoload/SpaceVim/mapping/leader.vim

@@ -199,6 +199,7 @@ function! SpaceVim#mapping#leader#getName(key) abort
 endfunction
 
 function! SpaceVim#mapping#leader#defindKEYs() abort
+  call SpaceVim#logger#debug('defind SPC h k prefixs')
   let g:_spacevim_mappings_prefixs = {}
   if !g:spacevim_vimcompatible && !empty(g:spacevim_windows_leader)
     let g:_spacevim_mappings_prefixs[g:spacevim_windows_leader] = {'name' : '+Window prefix'}

autoload/SpaceVim/mapping/space.vim

@@ -11,6 +11,7 @@ let s:BUF = SpaceVim#api#import('vim#buffer')
 let s:file = expand('<sfile>:~')
 let s:funcbeginline =  expand('<slnum>') + 1
 function! SpaceVim#mapping#space#init() abort
+  call SpaceVim#logger#debug('init SPC key bindings')
   let g:_spacevim_mappings_space = {}
   let g:_spacevim_mappings_prefixs['[SPC]'] = {'name' : '+SPC prefix'}
   let g:_spacevim_mappings_space.t = {'name' : '+Toggles'}

autoload/SpaceVim/mapping/tab.vim

@@ -20,8 +20,16 @@ if g:spacevim_snippet_engine ==# 'neosnippet'
     elseif neosnippet#expandable_or_jumpable() && getline('.')[col('.')-2] !=#'('
       return "\<plug>(neosnippet_expand_or_jump)"
     elseif pumvisible()
+          \ ||
+          \ (
+          \   g:spacevim_autocomplete_method ==# 'nvim-cmp'
+          \   && luaeval("require('cmp').visible()")
+          \ )
       return "\<C-n>"
-    elseif has('patch-7.4.774') && complete_parameter#jumpable(1) && getline('.')[col('.')-2] !=# ')'
+    elseif has('patch-7.4.774')
+          \ && g:spacevim_autocomplete_method !=# 'nvim-cmp'
+          \ && complete_parameter#jumpable(1)
+          \ && getline('.')[col('.')-2] !=# ')'
       return "\<plug>(complete_parameter#goto_next_parameter)"
     else
       return "\<tab>"

autoload/SpaceVim/mapping/z.vim

@@ -7,6 +7,7 @@
 "=============================================================================
 
 function! SpaceVim#mapping#z#init() abort "{{{
+  call SpaceVim#logger#debug('init z key bindings')
     nnoremap <silent><nowait> [Z] :<c-u>LeaderGuide "z"<CR>
     nmap z [Z]
     let g:_spacevim_mappings_z = {}

autoload/SpaceVim/plugins.vim

@@ -18,9 +18,10 @@ function! SpaceVim#plugins#load() abort
 
 endfunction
 function! s:load_plugins() abort
-  for group in SpaceVim#layers#get()
-    let g:_spacevim_plugin_layer = group
-    for plugin in s:getLayerPlugins(group)
+  for layer in SpaceVim#layers#get()
+    call SpaceVim#logger#debug('init ' . layer . ' layer plugins list.')
+    let g:_spacevim_plugin_layer = layer
+    for plugin in s:getLayerPlugins(layer)
       if len(plugin) == 2
         call SpaceVim#plugins#add(plugin[0], extend(plugin[1], {'overwrite' : 1}))
         if SpaceVim#plugins#tap(split(plugin[0], '/')[-1]) && get(plugin[1], 'loadconf', 0 )
@@ -33,7 +34,7 @@ function! s:load_plugins() abort
         call SpaceVim#plugins#add(plugin[0], {'overwrite' : 1})
       endif
     endfor
-    call s:loadLayerConfig(group)
+    call s:loadLayerConfig(layer)
   endfor
   unlet g:_spacevim_plugin_layer
   for plugin in g:spacevim_custom_plugins
@@ -55,6 +56,7 @@ function! s:getLayerPlugins(layer) abort
 endfunction
 
 function! s:loadLayerConfig(layer) abort
+  call SpaceVim#logger#debug('load ' . a:layer . ' layer config.')
   try
     call SpaceVim#layers#{a:layer}#config()
   catch /^Vim\%((\a\+)\)\=:E117/

bundle/README.md

@@ -16,3 +16,4 @@ In `bundle/` directory, there are two kinds of plugins: forked plugins without c
 - [indent-blankline.nvim](https://github.com/lukas-reineke/indent-blankline.nvim/tree/17a83ea765831cb0cc64f768b8c3f43479b90bbe)
 - [nvim-lspconfig](https://github.com/neovim/nvim-lspconfig/tree/507f8a570ac2b8b8dabdd0f62da3b3194bf822f8)
 - [deoplete-lsp](https://github.com/deoplete-plugins/deoplete-lsp/tree/6299a22bedfb4f814d95cb0010291501472f8fd0)
+- [nvim-cmp](https://github.com/hrsh7th/nvim-cmp/tree/1cfe2f7dfdd877b54c0f4b0f9a15f525e7a3ea01)

bundle/cmp-buffer/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 hrsh7th
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

bundle/cmp-buffer/README.md

@@ -0,0 +1,62 @@
+# cmp-buffer
+
+nvim-cmp source for buffer words.
+
+# Setup
+
+```lua
+require'cmp'.setup {
+  sources = {
+    { name = 'buffer' }
+  }
+}
+```
+
+# Configuration
+
+The below source configuration are available.
+
+
+### keyword_length (type: number)
+
+_Default:_ `3`
+
+Specify word length to gather.
+
+
+### keyword_pattern (type: string)
+
+_Default:_ `[[\%(-\?\d\+\%(\.\d\+\)\?\|\h\w*\%([\-.]\w*\)*\)]]`
+
+A vim's regular expression for creating a word list from buffer content.
+
+You can set this to `\k\+` if you want to use the `iskeyword` option for recognizing words.
+
+
+### get_bufnrs (type: fun(): number[])
+
+_Default:_ `function() return { vim.api.nvim_get_current_buf() } end`
+
+A function that specifies the buffer numbers to complete.
+
+You can use the following pre-defined recipes.
+
+##### All buffers
+
+```lua
+get_bufnrs = function()
+  return vim.api.nvim_list_bufs()
+end
+```
+
+##### Visible buffers
+
+```lua
+get_bufnrs = function()
+  local bufs = {}
+  for _, win in ipairs(vim.api.nvim_list_wins()) do
+    bufs[vim.api.nvim_win_get_buf(win)] = true
+  end
+  return vim.tbl_keys(bufs)
+end
+```

bundle/cmp-buffer/after/plugin/cmp_buffer.lua

@@ -0,0 +1,2 @@
+require'cmp'.register_source('buffer', require'cmp_buffer'.new())
+

bundle/cmp-buffer/lua/cmp_buffer/buffer.lua

@@ -0,0 +1,235 @@
+---@class cmp_buffer.Buffer
+---@field public bufnr number
+---@field public regex any
+---@field public length number
+---@field public pattern string
+---@field public indexing_chunk_size number
+---@field public indexing_interval number
+---@field public timer any|nil
+---@field public lines_count number
+---@field public lines_words table<number, string[]>
+---@field public closed boolean
+---@field public on_close_cb fun()|nil
+local buffer = {}
+
+---Create new buffer object
+---@param bufnr number
+---@param length number
+---@param pattern string
+---@return cmp_buffer.Buffer
+function buffer.new(bufnr, length, pattern)
+  local self = setmetatable({}, { __index = buffer })
+  self.bufnr = bufnr
+  self.regex = vim.regex(pattern)
+  self.length = length
+  self.pattern = pattern
+  self.indexing_chunk_size = 1000
+  self.indexing_interval = 200
+  self.timer = nil
+  self.lines_count = 0
+  self.lines_words = {}
+  self.closed = false
+  self.on_close_cb = nil
+  return self
+end
+
+---Close buffer
+function buffer.close(self)
+  self.closed = true
+  self:stop_indexing_timer()
+  self.lines_count = 0
+  self.lines_words = {}
+  if self.on_close_cb then
+    self.on_close_cb()
+  end
+end
+
+function buffer.stop_indexing_timer(self)
+  if self.timer and not self.timer:is_closing() then
+    self.timer:stop()
+    self.timer:close()
+  end
+  self.timer = nil
+end
+
+---Indexing buffer
+function buffer.index(self)
+  self.lines_count = vim.api.nvim_buf_line_count(self.bufnr)
+  for i = 1, self.lines_count do
+    self.lines_words[i] = {}
+  end
+
+  self:index_range_async(0, self.lines_count)
+end
+
+function buffer.index_range(self, range_start, range_end)
+  vim.api.nvim_buf_call(self.bufnr, function()
+    local lines = vim.api.nvim_buf_get_lines(self.bufnr, range_start, range_end, true)
+    for i, line in ipairs(lines) do
+      self:index_line(range_start + i, line)
+    end
+  end)
+end
+
+function buffer.index_range_async(self, range_start, range_end)
+  local chunk_start = range_start
+
+  local lines = vim.api.nvim_buf_get_lines(self.bufnr, range_start, range_end, true)
+
+  self.timer = vim.loop.new_timer()
+  self.timer:start(
+    0,
+    self.indexing_interval,
+    vim.schedule_wrap(function()
+      if self.closed then
+        return
+      end
+
+      local chunk_end = math.min(chunk_start + self.indexing_chunk_size, range_end)
+      vim.api.nvim_buf_call(self.bufnr, function()
+        for linenr = chunk_start + 1, chunk_end do
+          self:index_line(linenr, lines[linenr])
+        end
+      end)
+      chunk_start = chunk_end
+
+      if chunk_end >= range_end then
+        self:stop_indexing_timer()
+      end
+    end)
+  )
+end
+
+--- watch
+function buffer.watch(self)
+  -- NOTE: As far as I know, indexing in watching can't be done asynchronously
+  -- because even built-in commands generate multiple consequent `on_lines`
+  -- events, and I'm not even mentioning plugins here. To get accurate results
+  -- we would have to either re-index the entire file on throttled events (slow
+  -- and looses the benefit of on_lines watching), or put the events in a
+  -- queue, which would complicate the plugin a lot. Plus, most changes which
+  -- trigger this event will be from regular editing, and so 99% of the time
+  -- they will affect only 1-2 lines.
+  vim.api.nvim_buf_attach(self.bufnr, false, {
+    -- NOTE: line indexes are 0-based and the last line is not inclusive.
+    on_lines = function(_, _, _, first_line, old_last_line, new_last_line, _, _, _)
+      if self.closed then
+        return true
+      end
+
+      local delta = new_last_line - old_last_line
+      local old_lines_count = self.lines_count
+      local new_lines_count = old_lines_count + delta
+      if new_lines_count == 0 then -- clear
+        -- This branch protects against bugs after full-file deletion. If you
+        -- do, for example, gdGG, the new_last_line of the event will be zero.
+        -- Which is not true, a buffer always contains at least one empty line,
+        -- only unloaded buffers contain zero lines.
+        new_lines_count = 1
+        for i = old_lines_count, 2, -1 do
+          self.lines_words[i] = nil
+        end
+        self.lines_words[1] = {}
+      elseif delta > 0 then -- append
+        -- Explicitly reserve more slots in the array part of the lines table,
+        -- all of them will be filled in the next loop, but in reverse order
+        -- (which is why I am concerned about preallocation). Why is there no
+        -- built-in function to do this in Lua???
+        for i = old_lines_count + 1, new_lines_count do
+          self.lines_words[i] = vim.NIL
+        end
+        -- Move forwards the unchanged elements in the tail part.
+        for i = old_lines_count, old_last_line + 1, -1 do
+          self.lines_words[i + delta] = self.lines_words[i]
+        end
+        -- Fill in new tables for the added lines.
+        for i = old_last_line + 1, new_last_line do
+          self.lines_words[i] = {}
+        end
+      elseif delta < 0 then -- remove
+        -- Move backwards the unchanged elements in the tail part.
+        for i = old_last_line + 1, old_lines_count do
+          self.lines_words[i + delta] = self.lines_words[i]
+        end
+        -- Remove (already copied) tables from the end, in reverse order, so
+        -- that we don't make holes in the lines table.
+        for i = old_lines_count, new_lines_count + 1, -1 do
+          self.lines_words[i] = nil
+        end
+      end
+      self.lines_count = new_lines_count
+
+      -- replace lines
+      self:index_range(first_line, new_last_line)
+    end,
+
+    on_reload = function(_, _)
+      if self.closed then
+        return true
+      end
+
+      -- The logic for adjusting lines list on buffer reloads is much simpler
+      -- because tables of all lines can be assumed to be fresh.
+      local new_lines_count = vim.api.nvim_buf_line_count(self.bufnr)
+      if new_lines_count > self.lines_count then -- append
+        for i = self.lines_count + 1, new_lines_count do
+          self.lines_words[i] = {}
+        end
+      elseif new_lines_count < self.lines_count then -- remove
+        for i = self.lines_count, new_lines_count + 1, -1 do
+          self.lines_words[i] = nil
+        end
+      end
+      self.lines_count = new_lines_count
+
+      self:index_range(0, self.lines_count)
+    end,
+
+    on_detach = function(_, _)
+      if self.closed then
+        return true
+      end
+      self:close()
+    end,
+  })
+end
+
+---@param linenr number
+---@param line string
+function buffer.index_line(self, linenr, line)
+  local words = self.lines_words[linenr]
+  for k, _ in ipairs(words) do
+    words[k] = nil
+  end
+  local word_i = 1
+
+  local remaining = line
+  while #remaining > 0 do
+    -- NOTE: Both start and end indexes here are 0-based (unlike Lua strings),
+    -- and the end index is not inclusive.
+    local match_start, match_end = self.regex:match_str(remaining)
+    if match_start and match_end then
+      local word = remaining:sub(match_start + 1, match_end)
+      if #word >= self.length then
+        words[word_i] = word
+        word_i = word_i + 1
+      end
+      remaining = remaining:sub(match_end + 1)
+    else
+      break
+    end
+  end
+end
+
+--- get_words
+function buffer.get_words(self)
+  local words = {}
+  for _, line in ipairs(self.lines_words) do
+    for _, w in ipairs(line) do
+      table.insert(words, w)
+    end
+  end
+  return words
+end
+
+return buffer

bundle/cmp-buffer/lua/cmp_buffer/init.lua

@@ -0,0 +1,91 @@
+local buffer = require('cmp_buffer.buffer')
+
+local defaults = {
+  keyword_length = 3,
+  keyword_pattern = [[\%(-\?\d\+\%(\.\d\+\)\?\|\h\w*\%([\-]\w*\)*\)]],
+  get_bufnrs = function()
+    return { vim.api.nvim_get_current_buf() }
+  end,
+}
+
+local source = {}
+
+source.new = function()
+  local self = setmetatable({}, { __index = source })
+  self.buffers = {}
+  return self
+end
+
+source.get_keyword_pattern = function(_, params)
+  params.option = vim.tbl_deep_extend('keep', params.option, defaults)
+  vim.validate({
+    keyword_length = { params.option.keyword_length, 'number', '`opts.keyword_length` must be `number`' },
+    keyword_pattern = { params.option.keyword_pattern, 'string', '`opts.keyword_pattern` must be `string`' },
+    get_bufnrs = { params.option.get_bufnrs, 'function', '`opts.get_bufnrs` must be `function`' },
+  })
+  return params.option.keyword_pattern
+end
+
+source.complete = function(self, params, callback)
+  params.option = vim.tbl_deep_extend('keep', params.option, defaults)
+  vim.validate({
+    keyword_pattern = { params.option.keyword_pattern, 'string', '`opts.keyword_pattern` must be `string`' },
+    get_bufnrs = { params.option.get_bufnrs, 'function', '`opts.get_bufnrs` must be `function`' },
+  })
+
+  local processing = false
+  local bufs = self:_get_buffers(params)
+  for _, buf in ipairs(bufs) do
+    if buf.timer then
+      processing = true
+      break
+    end
+  end
+
+  vim.defer_fn(function()
+    local input = string.sub(params.context.cursor_before_line, params.offset)
+    local items = {}
+    local words = {}
+    for _, buf in ipairs(bufs) do
+      for _, word in ipairs(buf:get_words()) do
+        if not words[word] and input ~= word then
+          words[word] = true
+          table.insert(items, {
+            label = word,
+            dup = 0,
+          })
+        end
+      end
+    end
+
+    callback({
+      items = items,
+      isIncomplete = processing,
+    })
+  end, processing and 100 or 0)
+end
+
+--- _get_bufs
+source._get_buffers = function(self, params)
+  local buffers = {}
+  for _, bufnr in ipairs(params.option.get_bufnrs()) do
+    if not self.buffers[bufnr] then
+      local new_buf = buffer.new(
+        bufnr,
+        params.option.keyword_length,
+        params.option.keyword_pattern
+      )
+      new_buf.on_close_cb = function()
+        self.buffers[bufnr] = nil
+      end
+      new_buf:index()
+      new_buf:watch()
+      self.buffers[bufnr] = new_buf
+    end
+    table.insert(buffers, self.buffers[bufnr])
+  end
+
+  return buffers
+end
+
+return source

bundle/cmp-cmdline/README.md

@@ -0,0 +1,13 @@
+# cmp-cmdline
+
+nvim-cmp source for vim's cmdline.
+
+# Setup
+
+```lua
+require'cmp'.setup.cmdline(':', {
+  sources = {
+    { name = 'cmdline' }
+  }
+})
+```

bundle/cmp-cmdline/after/plugin/cmp_cmdline.lua

@@ -0,0 +1 @@
+require('cmp').register_source('cmdline', require('cmp_cmdline').new())

bundle/cmp-cmdline/lua/cmp_cmdline/init.lua

@@ -0,0 +1,135 @@
+local cmp = require('cmp')
+
+local definitions = {
+  {
+    ctype = 'customlist',
+    regex = [=[[^[:blank:]]*$]=],
+    kind = cmp.lsp.CompletionItemKind.Variable,
+    fallback = true,
+    isIncomplete = false,
+    exec = function(arglead, cmdline, curpos)
+      local name = cmdline:match([=[^[ <'>]*(%a*)]=])
+      if not name then
+        return {}
+      end
+      for name_, option in pairs(vim.api.nvim_get_commands({ builtin = false })) do
+        if name_ == name then
+          if vim.tbl_contains({ 'customlist', 'custom' }, option.complete) then
+            local ok, items = pcall(function()
+              local func = string.gsub(option.complete_arg, 's:', ('<SNR>%d_'):format(option.script_id))
+              return vim.fn.eval(('%s("%s", "%s", "%s")'):format(
+                func,
+                vim.fn.escape(arglead, '"'),
+                vim.fn.escape(cmdline, '"'),
+                vim.fn.escape(curpos, '"')
+              ))
+            end)
+            if not ok then
+              return {}
+            end
+            if type(items) == 'string' then
+              return vim.split(items, '\n')
+            elseif type(items) == 'table' then
+              return items
+            end
+            return {}
+          end
+        end
+      end
+      return {}
+    end
+  },
+  {
+    ctype = 'cmdline',
+    regex = [=[^[^!].*]=],
+    kind = cmp.lsp.CompletionItemKind.Variable,
+    isIncomplete = true,
+    exec = function(_, cmdline, _)
+      return vim.fn.getcompletion(cmdline, 'cmdline')
+    end
+  },
+}
+
+local source = {}
+
+source.new = function()
+  return setmetatable({
+    before_line = '',
+    offset = -1,
+    ctype = '',
+    items = {},
+  }, { __index = source })
+end
+
+source.get_keyword_pattern = function()
+  return [=[[[:keyword:]-]*]=]
+end
+
+source.get_trigger_characters = function()
+  return { ' ', '.' }
+end
+
+source.is_available = function()
+  return vim.api.nvim_get_mode().mode == 'c'
+end
+
+source.complete = function(self, params, callback)
+  local offset = 0
+  local ctype = ''
+  local items = {}
+  local kind = ''
+  local isIncomplete = false
+  for _, def in ipairs(definitions) do
+    local s, e = vim.regex(def.regex):match_str(params.context.cursor_before_line)
+    if s and e then
+      offset = s
+      ctype = def.type
+      items = def.exec(
+        string.sub(params.context.cursor_before_line, s + 1),
+        params.context.cursor_before_line,
+        params.context.cursor.col
+      )
+      kind = def.kind
+      isIncomplete = def.isIncomplete
+      if not (#items == 0 and def.fallback) then
+        break
+      end
+    end
+  end
+
+  local labels = {}
+  items = vim.tbl_map(function(item)
+    if type(item) == 'string' then
+      labels[item] = true
+      return { label = item, kind = kind }
+    end
+      labels[item.word] = true
+    return { label = item.word, kind = kind }
+  end, items)
+
+  local match_prefix = false
+  if #params.context.cursor_before_line > #self.before_line then
+    match_prefix = string.find(params.context.cursor_before_line, self.before_line, 1, true) == 1
+  elseif #params.context.cursor_before_line < #self.before_line then
+    match_prefix = string.find(self.before_line, params.context.cursor_before_line, 1, true) == 1
+  end
+  if match_prefix and self.offset == offset and self.ctype == ctype then
+    for _, item in ipairs(self.items) do
+      if not labels[item.label] then
+        table.insert(items, item)
+      end
+    end
+  end
+  self.before_line = params.context.cursor_before_line
+  self.offset = offset
+  self.ctype = ctype
+  self.items = items
+
+  callback({
+    isIncomplete = isIncomplete,
+    items = items,
+  })
+end
+
+return source
+

bundle/cmp-nvim-lsp/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 hrsh7th
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

bundle/cmp-nvim-lsp/README.md

@@ -0,0 +1,24 @@
+# cmp-nvim-lsp
+
+nvim-cmp source for neovim builtin LSP client
+
+# Setup
+
+```lua
+
+require'cmp'.setup {
+  sources = {
+    { name = 'nvim_lsp' }
+  }
+}
+
+-- The nvim-cmp almost supports LSP's capabilities so You should advertise it to LSP servers..
+local capabilities = vim.lsp.protocol.make_client_capabilities()
+capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
+
+-- The following example advertise capabilities to `clangd`.
+require'lspconfig'.clangd.setup {
+  capabilities = capabilities,
+}
+```
+

bundle/cmp-nvim-lsp/after/plugin/cmp_nvim_lsp.lua

@@ -0,0 +1 @@
+require('cmp_nvim_lsp').setup()

bundle/cmp-nvim-lsp/lua/cmp_nvim_lsp/init.lua

@@ -0,0 +1,84 @@
+local source = require('cmp_nvim_lsp.source')
+
+local M = {}
+
+---Registered client and source mapping.
+M.client_source_map = {}
+
+---Setup cmp-nvim-lsp source.
+M.setup = function()
+  vim.cmd([[
+    augroup cmp_nvim_lsp
+      autocmd!
+      autocmd InsertEnter * lua require'cmp_nvim_lsp'._on_insert_enter()
+    augroup END
+  ]])
+end
+
+local if_nil = function(val, default)
+  if val == nil then return default end
+  return val
+end
+
+M.update_capabilities = function(capabilities, override)
+  override = override or {}
+
+  local completionItem = capabilities.textDocument.completion.completionItem
+
+  completionItem.snippetSupport = if_nil(override.snippetSupport, true)
+  completionItem.preselectSupport = if_nil(override.preselectSupport, true)
+  completionItem.insertReplaceSupport = if_nil(override.insertReplaceSupport, true)
+  completionItem.labelDetailsSupport = if_nil(override.labelDetailsSupport, true)
+  completionItem.deprecatedSupport = if_nil(override.deprecatedSupport, true)
+  completionItem.commitCharactersSupport = if_nil(override.commitCharactersSupport, true)
+  completionItem.tagSupport = if_nil(override.tagSupport, { valueSet = { 1 } })
+  completionItem.resolveSupport = if_nil(override.resolveSupport, {
+    properties = {
+      'documentation',
+      'detail',
+      'additionalTextEdits',
+    }
+  })
+
+  return capabilities
+end
+
+---Refresh sources on InsertEnter.
+M._on_insert_enter = function()
+  local cmp = require('cmp')
+
+  local allowed_clients = {}
+
+  -- register all active clients.
+  for _, client in ipairs(vim.lsp.get_active_clients()) do
+    allowed_clients[client.id] = client
+    if not M.client_source_map[client.id] then
+      local s = source.new(client)
+      if s:is_available() then
+        M.client_source_map[client.id] = cmp.register_source('nvim_lsp', s)
+      end
+    end
+  end
+
+  -- register all buffer clients (early register before activation)
+  for _, client in ipairs(vim.lsp.buf_get_clients(0)) do
+    allowed_clients[client.id] = client
+    if not M.client_source_map[client.id] then
+      local s = source.new(client)
+      if s:is_available() then
+        M.client_source_map[client.id] = cmp.register_source('nvim_lsp', s)
+      end
+    end
+  end
+
+  -- unregister stopped/detached clients.
+  for client_id, source_id in pairs(M.client_source_map) do
+    if not allowed_clients[client_id] or allowed_clients[client_id]:is_stopped() then
+      cmp.unregister_source(source_id)
+      M.client_source_map[client_id] = nil
+    end
+  end
+end
+
+return M
+

bundle/cmp-nvim-lsp/lua/cmp_nvim_lsp/source.lua

@@ -0,0 +1,117 @@
+local source = {}
+
+source.new = function(client)
+  local self = setmetatable({}, { __index = source })
+  self.client = client
+  self.request_ids = {}
+  return self
+end
+
+source.get_debug_name = function(self)
+  return table.concat({ 'nvim_lsp', self.client.name }, ':')
+end
+
+source.is_available = function(self)
+  -- client is stopped.
+  if self.client.is_stopped() then
+    return false
+  end
+
+  -- client is not attached to current buffer.
+  if not vim.lsp.buf_get_clients(vim.api.nvim_get_current_buf())[self.client.id] then
+    return false
+  end
+
+  -- client has no completion capability.
+  if not self:_get(self.client.server_capabilities, { 'completionProvider' }) then
+    return false
+  end
+  return true;
+end
+
+source.get_trigger_characters = function(self)
+  return self:_get(self.client.server_capabilities, { 'completionProvider', 'triggerCharacters' }) or {}
+end
+
+source.complete = function(self, request, callback)
+  local params = vim.lsp.util.make_position_params()
+  params.context = {}
+  params.context.triggerKind = request.completion_context.triggerKind
+  params.context.triggerCharacter = request.completion_context.triggerCharacter
+
+  self:_request('textDocument/completion', params, function(_, response)
+    callback(response)
+  end)
+end
+
+source.resolve = function(self, completion_item, callback)
+  -- client is stopped.
+  if self.client.is_stopped() then
+    return callback()
+  end
+
+  -- client has no completion capability.
+  if not self:_get(self.client.server_capabilities, { 'completionProvider', 'resolveProvider' }) then
+    return callback()
+  end
+
+  self:_request('completionItem/resolve', completion_item, function(_, response)
+    callback(response or completion_item)
+  end)
+end
+
+source.execute = function(self, completion_item, callback)
+  -- client is stopped.
+  if self.client.is_stopped() then
+    return callback()
+  end
+
+  -- completion_item has no command.
+  if not completion_item.command then
+    return callback()
+  end
+
+  self:_request('workspace/executeCommand', completion_item.command, function(_, _)
+    callback()
+  end)
+end
+
+source._get = function(_, root, paths)
+  local c = root
+  for _, path in ipairs(paths) do
+    c = c[path]
+    if not c then
+      return nil
+    end
+  end
+  return c
+end
+
+source._request = function(self, method, params, callback)
+  if self.request_ids[method] ~= nil then
+    self.client.cancel_request(self.request_ids[method])
+    self.request_ids[method] = nil
+  end
+  local _, request_id
+  _, request_id = self.client.request(method, params, function(arg1, arg2, arg3)
+    if self.request_ids[method] ~= request_id then
+      return
+    end
+    self.request_ids[method] = nil
+
+    -- Text changed, retry
+    if arg1 and arg1.code == -32801 then
+      self:_request(method, params, callback)
+      return
+    end
+
+    if method == arg2 then
+      callback(arg1, arg3) -- old signature
+    else
+      callback(arg1, arg2) -- new signature
+    end
+  end)
+  self.request_ids[method] = request_id
+end
+
+return source

bundle/cmp-path/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 hrsh7th
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

bundle/cmp-path/README.md

@@ -0,0 +1,15 @@
+# cmp-path
+
+nvim-cmp source for filesystem paths.
+
+# Setup
+
+```lua
+require'cmp'.setup {
+  sources = {
+    { name = 'path' }
+  }
+}
+```
+
+

bundle/cmp-path/after/plugin/cmp_path.lua

@@ -0,0 +1 @@
+require('cmp').register_source('path', require('cmp_path').new())

bundle/cmp-path/lua/cmp_path/init.lua

@@ -0,0 +1,207 @@
+local cmp = require'cmp'
+
+local NAME_REGEX = '\\%([^/\\\\:\\*?<>\'"`\\|]\\)'
+local PATH_REGEX = vim.regex(([[\%(/PAT\+\)*/\zePAT*$]]):gsub('PAT', NAME_REGEX))
+
+local source = {}
+
+local defaults = {
+  max_lines = 20,
+}
+
+source.new = function()
+  return setmetatable({}, { __index = source })
+end
+
+source.get_trigger_characters = function()
+  return { '/', '.' }
+end
+
+source.get_keyword_pattern = function()
+  return NAME_REGEX .. '*'
+end
+
+source.complete = function(self, params, callback)
+  local dirname = self:_dirname(params)
+  if not dirname then
+    return callback()
+  end
+
+  local stat = self:_stat(dirname)
+  if not stat then
+    return callback()
+  end
+
+  self:_candidates(params, dirname, params.offset, function(err, candidates)
+    if err then
+      return callback()
+    end
+    callback(candidates)
+  end)
+end
+
+source._dirname = function(self, params)
+  local s = PATH_REGEX:match_str(params.context.cursor_before_line)
+  if not s then
+    return nil
+  end
+
+  local dirname = string.gsub(string.sub(params.context.cursor_before_line, s + 2), '%a*$', '') -- exclude '/'
+  local prefix = string.sub(params.context.cursor_before_line, 1, s + 1) -- include '/'
+
+  local buf_dirname = vim.fn.expand(('#%d:p:h'):format(params.context.bufnr))
+  if vim.api.nvim_get_mode().mode == 'c' then
+    buf_dirname = vim.fn.getcwd()
+  end
+  if prefix:match('%.%./$') then
+    return vim.fn.resolve(buf_dirname .. '/../' .. dirname)
+  end
+  if prefix:match('%./$') then
+    return vim.fn.resolve(buf_dirname .. '/' .. dirname)
+  end
+  if prefix:match('~/$') then
+    return vim.fn.resolve(vim.fn.expand('~') .. '/' .. dirname)
+  end
+  local env_var_name = prefix:match('%$([%a_]+)/$')
+  if env_var_name then
+    local env_var_value = vim.fn.getenv(env_var_name)
+    if env_var_value ~= vim.NIL then
+      return vim.fn.resolve(env_var_value .. '/' .. dirname)
+    end
+  end
+  if prefix:match('/$') then
+    local accept = true
+    -- Ignore URL components
+    accept = accept and not prefix:match('%a/$')
+    -- Ignore URL scheme
+    accept = accept and not prefix:match('%a+:/$') and not prefix:match('%a+://$')
+    -- Ignore HTML closing tags
+    accept = accept and not prefix:match('</$')
+    -- Ignore math calculation
+    accept = accept and not prefix:match('[%d%)]%s*/$')
+    -- Ignore / comment
+    accept = accept and (not prefix:match('^[%s/]*$') or not self:_is_slash_comment())
+    if accept then
+      return vim.fn.resolve('/' .. dirname)
+    end
+  end
+  return nil
+end
+
+source._stat = function(_, path)
+  local stat = vim.loop.fs_stat(path)
+  if stat then
+    return stat
+  end
+  return nil
+end
+
+local function lines_from(file, count)
+  local bfile = assert(io.open(file, 'rb'))
+  local first_k = bfile:read(1024)
+  if first_k:find('\0') then
+	  return {'binary file'}
+  end
+  local lines = {'```'}
+  for line in first_k:gmatch("[^\r\n]+") do
+    lines[#lines + 1] = line
+    if count ~= nil and #lines >= count then
+     break
+    end
+  end
+  lines[#lines + 1] = '```'
+  return lines
+end
+
+local function try_get_lines(file, count)
+  status, ret = pcall(lines_from, file, count)
+  if status then
+    return ret
+  else
+    return nil
+  end
+end
+
+source._candidates = function(_, params, dirname, offset, callback)
+  local fs, err = vim.loop.fs_scandir(dirname)
+  if err then
+    return callback(err, nil)
+  end
+
+  local items = {}
+
+
+  local include_hidden = string.sub(params.context.cursor_before_line, offset, offset) == '.'
+  while true do
+    local name, type, e = vim.loop.fs_scandir_next(fs)
+    if e then
+      return callback(type, nil)
+    end
+    if not name then
+      break
+    end
+
+    local accept = false
+    accept = accept or include_hidden
+    accept = accept or name:sub(1, 1) ~= '.'
+
+    -- Create items
+    if accept then
+      if type == 'directory' then
+        table.insert(items, {
+          word = name,
+          label = name,
+          insertText = name .. '/',
+          kind = cmp.lsp.CompletionItemKind.Folder,
+        })
+      elseif type == 'link' then
+        local stat = vim.loop.fs_stat(dirname .. '/' .. name)
+        if stat then
+          if stat.type == 'directory' then
+            table.insert(items, {
+              word = name,
+              label = name,
+              insertText = name .. '/',
+              kind = cmp.lsp.CompletionItemKind.Folder,
+            })
+          else
+            table.insert(items, {
+              label = name,
+              filterText = name,
+              insertText = name,
+              kind = cmp.lsp.CompletionItemKind.File,
+              data = {path = dirname .. '/' .. name},
+            })
+          end
+        end
+      elseif type == 'file' then
+        table.insert(items, {
+          label = name,
+          filterText = name,
+          insertText = name,
+          kind = cmp.lsp.CompletionItemKind.File,
+          data = {path = dirname .. '/' .. name},
+        })
+      end
+    end
+  end
+  callback(nil, items)
+end
+
+source._is_slash_comment = function(_)
+  local commentstring = vim.bo.commentstring or ''
+  local no_filetype = vim.bo.filetype == ''
+  local is_slash_comment = false
+  is_slash_comment = is_slash_comment or commentstring:match('/%*')
+  is_slash_comment = is_slash_comment or commentstring:match('//')
+  return is_slash_comment and not no_filetype
+end
+
+function source:resolve(completion_item, callback)
+  if completion_item.kind == cmp.lsp.CompletionItemKind.File then
+    completion_item.documentation = try_get_lines(completion_item.data.path, defaults.max_lines)
+  end
+  callback(completion_item)
+end
+
+return source

bundle/lspkind-nvim/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+	
+Copyright (c) 2021 Andrey Kuznetsov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

bundle/lspkind-nvim/README.md

@@ -0,0 +1,74 @@
+# lspkind-nvim
+
+This tiny plugin adds vscode-like pictograms to neovim built-in lsp:
+
+![Screenshot](https://github.com/onsails/lspkind-nvim/raw/images/images/screenshot.png "Screenshot")
+<sup>[nvim-compe](https://github.com/hrsh7th/nvim-compe), [vim-vsnip](https://github.com/hrsh7th/vim-vsnip), [vim-vsnip-integ](https://github.com/hrsh7th/vim-vsnip-integ), [jellybeans-nvim](https://github.com/metalelf0/jellybeans-nvim)</sup>
+
+## Configuration
+
+### Option 1: vanilla Neovim LSP
+
+Wherever you configure lsp put the following lua command:
+
+```lua
+require('lspkind').init({
+    -- enables text annotations
+    --
+    -- default: true
+    with_text = true,
+
+    -- default symbol map
+    -- can be either 'default' (requires nerd-fonts font) or
+    -- 'codicons' for codicon preset (requires vscode-codicons font)
+    --
+    -- default: 'default'
+    preset = 'codicons',
+
+    -- override preset symbols
+    --
+    -- default: {}
+    symbol_map = {
+      Text = "",
+      Method = "",
+      Function = "",
+      Constructor = "",
+      Field = "ﰠ",
+      Variable = "",
+      Class = "ﴯ",
+      Interface = "",
+      Module = "",
+      Property = "ﰠ",
+      Unit = "塞",
+      Value = "",
+      Enum = "",
+      Keyword = "",
+      Snippet = "",
+      Color = "",
+      File = "",
+      Reference = "",
+      Folder = "",
+      EnumMember = "",
+      Constant = "",
+      Struct = "פּ",
+      Event = "",
+      Operator = "",
+      TypeParameter = ""
+    },
+})
+```
+
+### Option 2: [nvim-cmp](https://github.com/hrsh7th/nvim-cmp)
+
+```lua
+local lspkind = require('lspkind')
+cmp.setup {
+  formatting = {
+    format = lspkind.cmp_format({with_text = false, maxwidth = 50})
+  }
+}
+```
+
+## Related LSP plugins
+
+[diaglist.nvim](https://github.com/onsails/diaglist.nvim) – live render workspace diagnostics in quickfix with current buf errors on top, buffer diagnostics in loclist

bundle/lspkind-nvim/lua/lspkind/init.lua

@@ -0,0 +1,143 @@
+local lspkind = {}
+local fmt = string.format
+
+local kind_presets = {
+  default = {
+-- if you change or add symbol here
+-- replace corresponding line in readme
+    Text = "",
+    Method = "",
+    Function = "",
+    Constructor = "",
+    Field = "ﰠ",
+    Variable = "",
+    Class = "ﴯ",
+    Interface = "",
+    Module = "",
+    Property = "ﰠ",
+    Unit = "塞",
+    Value = "",
+    Enum = "",
+    Keyword = "",
+    Snippet = "",
+    Color = "",
+    File = "",
+    Reference = "",
+    Folder = "",
+    EnumMember = "",
+    Constant = "",
+    Struct = "פּ",
+    Event = "",
+    Operator = "",
+    TypeParameter = ""
+  },
+  codicons = {
+    Text = "",
+    Method = "",
+    Function = "",
+    Constructor = "",
+    Field = "",
+    Variable = "",
+    Class = "",
+    Interface = "",
+    Module = "",
+    Property = "",
+    Unit = "",
+    Value = "",
+    Enum = "",
+    Keyword = "",
+    Snippet = "",
+    Color = "",
+    File = "",
+    Reference = "",
+    Folder = "",
+    EnumMember = "",
+    Constant = "",
+    Struct = "",
+    Event = "",
+    Operator = "",
+    TypeParameter = "",
+  },
+}
+
+local kind_order = {
+  'Text', 'Method', 'Function', 'Constructor', 'Field', 'Variable', 'Class', 'Interface', 'Module',
+  'Property', 'Unit', 'Value', 'Enum', 'Keyword', 'Snippet', 'Color', 'File', 'Reference', 'Folder',
+  'EnumMember', 'Constant', 'Struct', 'Event', 'Operator', 'TypeParameter'
+}
+local kind_len = 25
+
+-- default true
+local function opt_with_text(opts)
+  return opts == nil or opts['with_text'] == nil or opts['with_text']
+end
+
+-- default 'default'
+local function opt_preset(opts)
+  local preset
+  if opts == nil or opts['preset'] == nil then
+    preset = 'default'
+  else
+    preset = opts['preset']
+  end
+  return preset
+end
+
+function lspkind.init(opts)
+  local preset = opt_preset(opts)
+
+  local symbol_map = kind_presets[preset]
+  lspkind.symbol_map = (opts and opts['symbol_map'] and
+                       vim.tbl_extend('force', symbol_map, opts['symbol_map'])) or symbol_map
+
+  local symbols = {}
+  local len = kind_len
+  for i = 1, len do
+    local name = kind_order[i]
+    symbols[i] = lspkind.symbolic(name, opts)
+  end
+
+  for k,v in pairs(symbols) do
+    require('vim.lsp.protocol').CompletionItemKind[k] = v
+  end
+end
+
+lspkind.presets = kind_presets
+lspkind.symbol_map = kind_presets.default
+
+function lspkind.symbolic(kind, opts)
+  local with_text = opt_with_text(opts)
+
+  local symbol = lspkind.symbol_map[kind]
+  if with_text == true then
+    symbol = symbol and (symbol .. ' ') or ''
+    return fmt('%s%s', symbol, kind)
+  else
+    return symbol
+  end
+end
+
+function lspkind.cmp_format(opts)
+  if opts == nil then
+    opts = {}
+  end
+  if opts.preset or opts.symbol_map then
+    lspkind.init(opts)
+  end
+
+  return function(entry, vim_item)
+    vim_item.kind = lspkind.symbolic(vim_item.kind, opts)
+
+    if opts.menu ~= nil then
+      vim_item.menu = opts.menu[entry.source.name]
+    end
+
+    if opts.maxwidth ~= nil then
+        vim_item.abbr = string.sub(vim_item.abbr, 1, opts.maxwidth)
+    end
+
+    return vim_item
+  end
+end
+
+return lspkind

bundle/nvim-cmp/.githooks/pre-commit

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+DIR="$(dirname $(dirname $( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )))"
+
+cd $DIR
+make pre-commit
+for FILE in `git diff --staged --name-only`; do
+    git add $FILE
+done

bundle/nvim-cmp/.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: [hrsh7th]

bundle/nvim-cmp/.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,31 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- I will close the issue if this template was ignored. -->
+
+**Describe the bug**
+
+
+
+**Minimal config based on [this](https://github.com/hrsh7th/nvim-cmp/blob/main/utils/vimrc.vim)**
+
+```vim
+```
+
+**To Reproduce**
+
+1. ...
+2. ...
+3. ...
+
+**Expected behavior**
+
+
+
+**Additional context**

bundle/nvim-cmp/.github/workflows/integration.yaml

@@ -0,0 +1,50 @@
+name: integration
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  integration:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: nightly
+        default: true
+        override: true
+
+    - name: Setup neovim
+      uses: rhysd/action-setup-vim@v1
+      with:
+        neovim: true
+
+    - name: Setup lua
+      uses: leafo/gh-actions-lua@v8
+      with:
+        luaVersion: "luajit-2.1.0-beta3"
+
+    - name: Setup luarocks
+      uses: leafo/gh-actions-luarocks@v4
+
+    - name: Setup tools
+      shell: bash
+      run: |
+        sudo apt install -y curl unzip --no-install-recommends
+        bash ./utils/install_stylua.sh
+        luarocks install luacheck
+        luarocks install vusted
+
+    - name: Run tests
+      shell: bash
+      run: make integration
+

bundle/nvim-cmp/.gitignore

@@ -0,0 +1 @@
+utils/stylua

bundle/nvim-cmp/.luacheckrc

@@ -0,0 +1,2 @@
+globals = { 'vim', 'describe', 'it', 'before_each', 'after_each', 'assert', 'async' }
+max_line_length = false

bundle/nvim-cmp/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 hrsh7th
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

bundle/nvim-cmp/Makefile

@@ -0,0 +1,24 @@
+.PHONY: fmt
+fmt:
+	stylua --config-path stylua.toml --glob 'lua/**/*.lua' -- lua
+
+.PHONY: lint
+lint:
+	luacheck ./lua
+
+.PHONY: test
+test:
+	vusted --output=gtest ./lua
+
+.PHONY: pre-commit
+pre-commit:
+	./utils/stylua --config-path stylua.toml --glob 'lua/**/*.lua' -- lua
+	luacheck lua
+	vusted lua
+
+.PHONY: integration
+integration:
+	./utils/stylua --config-path stylua.toml --check --glob 'lua/**/*.lua' -- lua
+	luacheck lua
+	vusted lua
+

bundle/nvim-cmp/README.md

@@ -0,0 +1,776 @@
+# nvim-cmp
+
+A completion engine plugin for neovim written in Lua.
+Completion sources are installed from external repositories and "sourced".
+
+<video src="https://user-images.githubusercontent.com/629908/139000570-3ac39587-a88b-43c6-b35e-207489719359.mp4" width="100%"></video>
+
+Readme!
+====================
+
+1. nvim-cmp's breaking changes are documented [here](https://github.com/hrsh7th/nvim-cmp/issues/231).
+2. This is my hobby project. You can support me via GitHub sponsors.
+3. Bug reports are welcome, but I might not fix if you don't provide a minimal reproduction configuration and steps.
+
+
+Concept
+====================
+
+- No flicker
+- Works properly
+- Fully customizable via Lua functions
+- Fully supports LSP's completion capabilities
+  - Snippets
+  - CommitCharacters
+  - TriggerCharacters
+  - TextEdit and InsertReplaceTextEdit
+  - AdditionalTextEdits
+  - Markdown documentation
+  - Execute commands (Some LSP server needs it to auto-importing. e.g. `sumneko_lua` or `purescript-language-server`)
+  - Preselect
+  - CompletionItemTags
+- Support pairs-wise plugin automatically
+
+
+Setup
+====================
+
+### Recommended Configuration
+
+This example configuration uses `vim-plug` as the plugin manager.
+
+```viml
+call plug#begin(s:plug_dir)
+Plug 'neovim/nvim-lspconfig'
+Plug 'hrsh7th/cmp-nvim-lsp'
+Plug 'hrsh7th/cmp-buffer'
+Plug 'hrsh7th/cmp-path'
+Plug 'hrsh7th/cmp-cmdline'
+Plug 'hrsh7th/nvim-cmp'
+
+" For vsnip users.
+Plug 'hrsh7th/cmp-vsnip'
+Plug 'hrsh7th/vim-vsnip'
+
+" For luasnip users.
+" Plug 'L3MON4D3/LuaSnip'
+" Plug 'saadparwaiz1/cmp_luasnip'
+
+" For ultisnips users.
+" Plug 'SirVer/ultisnips'
+" Plug 'quangnguyen30192/cmp-nvim-ultisnips'
+
+" For snippy users.
+" Plug 'dcampos/nvim-snippy'
+" Plug 'dcampos/cmp-snippy'
+
+call plug#end()
+
+set completeopt=menu,menuone,noselect
+
+lua <<EOF
+  -- Setup nvim-cmp.
+  local cmp = require'cmp'
+
+  cmp.setup({
+    snippet = {
+      -- REQUIRED - you must specify a snippet engine
+      expand = function(args)
+        vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
+        -- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+        -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
+        -- require'snippy'.expand_snippet(args.body) -- For `snippy` users.
+      end,
+    },
+    mapping = {
+      ['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
+      ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
+      ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
+      ['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
+      ['<C-e>'] = cmp.mapping({
+        i = cmp.mapping.abort(),
+        c = cmp.mapping.close(),
+      }),
+      ['<CR>'] = cmp.mapping.confirm({ select = true }),
+    },
+    sources = cmp.config.sources({
+      { name = 'nvim_lsp' },
+      { name = 'vsnip' }, -- For vsnip users.
+      -- { name = 'luasnip' }, -- For luasnip users.
+      -- { name = 'ultisnips' }, -- For ultisnips users.
+      -- { name = 'snippy' }, -- For snippy users.
+    }, {
+      { name = 'buffer' },
+    })
+  })
+
+  -- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
+  cmp.setup.cmdline('/', {
+    sources = {
+      { name = 'buffer' }
+    }
+  })
+
+  -- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+  cmp.setup.cmdline(':', {
+    sources = cmp.config.sources({
+      { name = 'path' }
+    }, {
+      { name = 'cmdline' }
+    })
+  })
+
+  -- Setup lspconfig.
+  local capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
+  -- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
+  require('lspconfig')['<YOUR_LSP_SERVER>'].setup {
+    capabilities = capabilities
+  }
+EOF
+```
+
+### Where can I find more completion sources?
+
+You can search for various completion sources [here](https://github.com/topics/nvim-cmp).
+
+
+Configuration options
+====================
+
+You can specify the following configuration options via `cmp.setup { ... }`.
+
+The configuration options will be merged with the [default config](./lua/cmp/config/default.lua).
+
+If you want to remove a default option, set it to `false`.
+
+
+#### mapping (type: table<string, fun(fallback: function)>)
+
+Defines the action of each key mapping. The following lists all the built-in actions:
+
+- `cmp.mapping.select_prev_item({ cmp.SelectBehavior.{Insert,Select} })`
+- `cmp.mapping.select_next_item({ cmp.SelectBehavior.{Insert,Select} })`
+- `cmp.mapping.scroll_docs(number)`
+- `cmp.mapping.complete()`
+- `cmp.mapping.close()`
+- `cmp.mapping.abort()`
+- `cmp.mapping.confirm({ select = bool, behavior = cmp.ConfirmBehavior.{Insert,Replace} })`: If `select` is true and you haven't select any item, automatically selects the first item.
+
+You can configure `nvim-cmp` to use these `cmp.mapping` like this:
+
+```lua
+mapping = {
+  ['<C-n>'] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert }),
+  ['<C-p>'] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Insert }),
+  ['<Down>'] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Select }),
+  ['<Up>'] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Select }),
+  ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+  ['<C-f>'] = cmp.mapping.scroll_docs(4),
+  ['<C-Space>'] = cmp.mapping.complete(),
+  ['<C-e>'] = cmp.mapping.close(),
+  ['<CR>'] = cmp.mapping.confirm({
+    behavior = cmp.ConfirmBehavior.Replace,
+    select = true,
+  })
+}
+```
+
+In addition, the mapping mode can be specified with the help of `cmp.mapping(...)`. The default is the insert mode (i) if not specified.
+
+```lua
+mapping = {
+  ...
+  ['<Tab>'] = cmp.mapping(cmp.mapping.select_next_item(), { 'i', 's' })
+  ...
+}
+```
+
+The mapping mode can also be specified using a table. This is particularly useful to set different actions for each mode.
+
+```lua
+mapping = {
+  ['<CR>'] = cmp.mapping({
+    i = cmp.mapping.confirm({ select = true }),
+    c = cmp.mapping.confirm({ select = false }),
+  })
+}
+```
+
+You can also provide a custom function as the action.
+
+```lua
+mapping = {
+  ['<Tab>'] = function(fallback)
+    if ...some_condition... then
+      vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes('...', true, true, true), 'n', true)
+    else
+      fallback() -- The fallback function is treated as original mapped key. In this case, it might be `<Tab>`.
+    end
+  end,
+}
+```
+
+#### enabled (type: fun(): boolean|boolean)
+
+A boolean value, or a function returning a boolean, that specifies whether to enable nvim-cmp's features or not.
+
+Default:
+
+```lua
+function()
+  return vim.api.nvim_buf_get_option(0, 'buftype') ~= 'prompt'
+end
+```
+
+#### sources (type: table<cmp.SourceConfig>)
+
+Lists all the global completion sources that will be enabled in all buffers.
+The order of the list defines the priority of each source. See the
+*sorting.priority_weight* option below.
+
+It is possible to set up different sources for different filetypes using
+`FileType` autocommand and `cmp.setup.buffer` to override the global
+configuration.
+
+```viml
+" Setup buffer configuration (nvim-lua source only enables in Lua filetype).
+autocmd FileType lua lua require'cmp'.setup.buffer {
+\   sources = {
+\     { name = 'nvim_lua' },
+\     { name = 'buffer' },
+\   },
+\ }
+```
+
+Note that the source name isn't necessarily the source repository name.  Source
+names are defined in the source repository README files. For example, look at
+the [hrsh7th/cmp-buffer](https://github.com/hrsh7th/cmp-buffer) source README
+which defines the source name as `buffer`.
+
+#### sources[number].name (type: string)
+
+The source name.
+
+#### sources[number].opts (type: table)
+
+The source customization options. It is defined by each source.
+
+#### sources[number].priority (type: number|nil)
+
+The priority of the source.  If you don't specify it, the source priority will
+be determined by the default algorithm (see `sorting.priority_weight`).
+
+#### sources[number].keyword_pattern (type: string)
+
+The source specific keyword_pattern for override.
+
+#### sources[number].keyword_length (type: number)
+
+The source specific keyword_length for override.
+
+#### sources[number].max_item_count (type: number)
+
+The source specific maximum item count.
+
+#### sources[number].group_index (type: number)
+
+The source group index.
+
+You can call built-in utility like `cmp.config.sources({ { name = 'a' } }, { { name = 'b' } })`.
+
+#### preselect (type: cmp.PreselectMode)
+
+Specify preselect mode. The following modes are available.
+
+- `cmp.PreselectMode.Item`
+  - If the item has `preselect = true`, `nvim-cmp` will preselect it.
+- `cmp.PreselectMode.None`
+  - Disable preselect feature.
+
+Default: `cmp.PreselectMode.Item`
+
+#### completion.autocomplete (type: cmp.TriggerEvent[])
+
+Which events should trigger `autocompletion`.
+
+If you set this to `false`, `nvim-cmp` will not perform completion
+automatically. You can still use manual completion though (like omni-completion
+via the `cmp.mapping.complete` function).
+
+Default: `{ types.cmp.TriggerEvent.TextChanged }`
+
+#### completion.keyword_pattern (type: string)
+
+The default keyword pattern.  This value will be used if a source does not set
+a source specific pattern.
+
+Default: `[[\%(-\?\d\+\%(\.\d\+\)\?\|\h\w*\%(-\w*\)*\)]]`
+
+#### completion.keyword_length (type: number)
+
+The minimum length of a word to complete on; e.g., do not try to complete when the
+length of the word to the left of the cursor is less than `keyword_length`.
+
+Default: `1`
+
+#### completion.get_trigger_characters (type: fun(trigger_characters: string[]): string[])
+
+The function to resolve trigger_characters.
+
+Default: `function(trigger_characters) return trigger_characters end`
+
+#### completion.completeopt (type: string)
+
+vim's `completeopt` setting. Warning: Be careful when changing this value.
+
+Default: `menu,menuone,noselect`
+
+#### confirmation.default_behavior (type: cmp.ConfirmBehavior)
+
+A default `cmp.ConfirmBehavior` value when to use confirmed by commitCharacters
+
+Default: `cmp.ConfirmBehavior.Insert`
+
+#### confirmation.get_commit_characters (type: fun(commit_characters: string[]): string[])
+
+The function to resolve commit_characters.
+
+#### sorting.priority_weight (type: number)
+
+The score multiplier of source when calculating the items' priorities.
+Specifically, each item's original priority (given by its corresponding source)
+will be increased by `#sources - (source_index - 1)` multiplied by
+`priority_weight`. That is, the final priority is calculated by the following formula:
+
+`final_score = orig_score + ((#sources - (source_index - 1)) * sorting.priority_weight)`
+
+Default: `2`
+
+#### sorting.comparators (type: function[])
+
+When sorting completion items, the sort logic tries each function in
+`sorting.comparators` consecutively when comparing two items. The first function
+to return something other than `nil` takes precedence.
+
+Each function must return `boolean|nil`.
+
+You can use the preset functions from `cmp.config.compare.*`.
+
+Default:
+```lua
+{
+  cmp.config.compare.offset,
+  cmp.config.compare.exact,
+  cmp.config.compare.score,
+  cmp.config.compare.recently_used,
+  cmp.config.compare.kind,
+  cmp.config.compare.sort_text,
+  cmp.config.compare.length,
+  cmp.config.compare.order,
+}
+```
+
+#### documentation (type: false | cmp.DocumentationConfig)
+
+If set to `false`, the documentation of each item will not be shown.
+Else, a table representing documentation configuration should be provided.
+The following are the possible options:
+
+#### documentation.border (type: string[])
+
+Border characters used for documentation window.
+
+#### documentation.winhighlight (type: string)
+
+A neovim's `winhighlight` option for documentation window.
+
+#### documentation.maxwidth (type: number)
+
+The documentation window's max width.
+
+#### documentation.maxheight (type: number)
+
+The documentation window's max height.
+
+#### documentation.zindex (type: number)
+
+The documentation window's zindex.
+
+#### formatting.fields (type: cmp.ItemField[])
+
+The order of item's fields for completion menu.
+
+#### formatting.format (type: fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem)
+
+A function to customize completion menu.
+The return value is defined by vim. See `:help complete-items`.
+
+You can display the fancy icons to completion-menu with [lspkind-nvim](https://github.com/onsails/lspkind-nvim).
+
+Please see [FAQ](#how-to-show-name-of-item-kind-and-source-like-compe) if you would like to show symbol-text (e.g. function) and source (e.g. LSP) like compe.
+
+```lua
+local lspkind = require('lspkind')
+cmp.setup {
+  formatting = {
+    format = lspkind.cmp_format(),
+  },
+}
+```
+
+See the [wiki](https://github.com/hrsh7th/nvim-cmp/wiki/Menu-Appearance#basic-customisations) for more info on customizing menu appearance.
+
+#### experimental.native_menu (type: boolean)
+
+Use vim's native completion menu instead of custom floating menu.
+
+Default: `false`
+
+#### experimental.ghost_text (type: cmp.GhostTextConfig | false)
+
+Specify whether to display ghost text.
+
+Default: `false`
+
+Commands
+====================
+
+#### `CmpStatus`
+
+Show the source statuses
+
+Autocmds
+====================
+
+#### `cmp#ready`
+
+Invoke after nvim-cmp setup.
+
+Highlights
+====================
+
+#### `CmpItemAbbr`
+
+The abbr field.
+
+#### `CmpItemAbbrDeprecated`
+
+The deprecated item's abbr field.
+
+#### `CmpItemAbbrMatch`
+
+The matched characters highlight.
+
+#### `CmpItemAbbrMatchFuzzy`
+
+The fuzzy matched characters highlight.
+
+#### `CmpItemKind`
+
+The kind field.
+
+#### `CmpItemMenu`
+
+The menu field.
+
+Programatic API
+====================
+
+You can use the following APIs.
+
+#### `cmp.event:on(name: string, callback: string)`
+
+Subscribes to the following events.
+
+- `confirm_done`
+
+#### `cmp.get_config()`
+
+Returns the current configuration.
+
+#### `cmp.visible()`
+
+Returns the completion menu is visible or not.
+
+NOTE: This method returns true if the native popup menu is visible, for the convenience of defining mappings.
+
+#### `cmp.get_selected_entry()`
+
+Returns the selected entry.
+
+#### `cmp.get_active_entry()`
+
+Returns the active entry.
+
+NOTE: The `preselected` entry does not returned from this method.
+
+#### `cmp.confirm({ select = boolean, behavior = cmp.ConfirmBehavior.{Insert,Replace} }, callback)`
+
+Confirms the current selected item, if possible. If `select` is true and no item has been selected, selects the first item.
+
+#### `cmp.complete()`
+
+Invokes manual completion.
+
+#### `cmp.close()`
+
+Closes the current completion menu.
+
+#### `cmp.abort()`
+
+Closes the current completion menu and restore the current line (similar to native `<C-e>` behavior).
+
+#### `cmp.select_next_item({ cmp.SelectBehavior.{Insert,Select} })`
+
+Selects the next completion item if possible.
+
+#### `cmp.select_prev_item({ cmp.SelectBehavior.{Insert,Select} })`
+
+Selects the previous completion item if possible.
+
+#### `cmp.scroll_docs(delta)`
+
+Scrolls the documentation window by `delta` lines, if possible.
+
+
+FAQ
+====================
+
+#### I can't get the specific source working.
+
+Check the output of command `:CmpStatus`. It is likely that you specify the source name incorrectly.
+
+NOTE: `nvim_lsp` will be sourced on `InsertEnter` event. It will show as `unknown source`, but this isn't a problem.
+
+
+#### What is the `pair-wise plugin automatically supported`?
+
+Some pair-wise plugin set up the mapping automatically.
+For example, `vim-endwise` will map `<CR>` even if you don't do any mapping instructions for the plugin.
+
+But I think the user want to override `<CR>` mapping only when the mapping item is selected.
+
+The `nvim-cmp` does it automatically.
+
+The following configuration will be working as
+
+1. If the completion-item is selected, will be working as `cmp.mapping.confirm`.
+2. If the completion-item isn't selected, will be working as vim-endwise feature.
+
+```lua
+mapping = {
+  ['<CR>'] = cmp.mapping.confirm()
+}
+```
+
+
+#### What is the equivalence of nvim-compe's `preselect = 'always'`?
+
+You can use the following configuration.
+
+```lua
+cmp.setup {
+  completion = {
+    completeopt = 'menu,menuone,noinsert',
+  }
+}
+```
+
+#### I don't use a snippet plugin.
+
+At the moment, nvim-cmp requires a snippet engine to function correctly.
+You need to specify one in `snippet`.
+
+```lua
+snippet = {
+  -- REQUIRED - you must specify a snippet engine
+  expand = function(args)
+    vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
+    -- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+    -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
+    -- require'snippy'.expand_snippet(args.body) -- For `snippy` users.
+  end,
+}
+```
+
+
+#### I dislike auto-completion
+
+You can use `nvim-cmp` without auto-completion like this.
+
+```lua
+cmp.setup {
+  completion = {
+    autocomplete = false
+  }
+}
+```
+
+
+#### How to disable nvim-cmp on the specific buffer?
+
+You can specify `enabled = false` like this.
+
+```vim
+autocmd FileType TelescopePrompt lua require('cmp').setup.buffer { enabled = false }
+```
+
+
+#### nvim-cmp is slow.
+
+I've optimized `nvim-cmp` as much as possible, but there are currently some known / unfixable issues.
+
+**`cmp-buffer` source and too large buffer**
+
+The `cmp-buffer` source makes an index of the current buffer so if the current buffer is too large, it will slowdown the main UI thread.
+
+**`vim.lsp.set_log_level`**
+
+This setting will cause the filesystem operation for each LSP payload.
+This will greatly slow down nvim-cmp (and other LSP related features).
+
+
+#### How to show name of item kind and source (like compe)?
+
+```lua
+formatting = {
+  format = require("lspkind").cmp_format({with_text = true, menu = ({
+      buffer = "[Buffer]",
+      nvim_lsp = "[LSP]",
+      luasnip = "[LuaSnip]",
+      nvim_lua = "[Lua]",
+      latex_symbols = "[Latex]",
+    })}),
+},
+```
+
+
+#### How to set up mappings?
+
+You can find all the mapping examples in [Example mappings](https://github.com/hrsh7th/nvim-cmp/wiki/Example-mappings).
+
+
+Create a Custom Source
+====================
+
+Warning: If the LSP spec is changed, nvim-cmp will keep up to it without an announcement.
+
+If you publish `nvim-cmp` source to GitHub, please add `nvim-cmp` topic for the repo.
+
+You should read [cmp types](/lua/cmp/types) and [LSP spec](https://microsoft.github.io/language-server-protocol/specifications/specification-current/) to create sources.
+
+- The `complete` function is required. Others can be omitted.
+- The `callback` argument must always be called.
+- The custom source should only use `require('cmp')`.
+- The custom source can specify `word` property to CompletionItem. (It isn't an LSP specification but supported as a special case.)
+
+Here is an example of a custom source.
+
+```lua
+local source = {}
+
+---Source constructor.
+source.new = function()
+  local self = setmetatable({}, { __index = source })
+  self.your_awesome_variable = 1
+  return self
+end
+
+---Return the source is available or not.
+---@return boolean
+function source:is_available()
+  return true
+end
+
+---Return the source name for some information.
+function source:get_debug_name()
+  return 'example'
+end
+
+---Return keyword pattern which will be used...
+---  1. Trigger keyword completion
+---  2. Detect menu start offset
+---  3. Reset completion state
+---@param params cmp.SourceBaseApiParams
+---@return string
+function source:get_keyword_pattern(params)
+  return '???'
+end
+
+---Return trigger characters.
+---@param params cmp.SourceBaseApiParams
+---@return string[]
+function source:get_trigger_characters(params)
+  return { ??? }
+end
+
+---Invoke completion (required).
+---  If you want to abort completion, just call the callback without arguments.
+---@param params cmp.SourceCompletionApiParams
+---@param callback fun(response: lsp.CompletionResponse|nil)
+function source:complete(params, callback)
+  callback({
+    { label = 'January' },
+    { label = 'February' },
+    { label = 'March' },
+    { label = 'April' },
+    { label = 'May' },
+    { label = 'June' },
+    { label = 'July' },
+    { label = 'August' },
+    { label = 'September' },
+    { label = 'October' },
+    { label = 'November' },
+    { label = 'December' },
+  })
+end
+
+---Resolve completion item that will be called when the item selected or before the item confirmation.
+---@param completion_item lsp.CompletionItem
+---@param callback fun(completion_item: lsp.CompletionItem|nil)
+function source:resolve(completion_item, callback)
+  callback(completion_item)
+end
+
+---Execute command that will be called when after the item confirmation.
+---@param completion_item lsp.CompletionItem
+---@param callback fun(completion_item: lsp.CompletionItem|nil)
+function source:execute(completion_item, callback)
+  callback(completion_item)
+end
+
+require('cmp').register_source(source.new())
+```
+
+You can also create a source by Vim script like this (This is useful to support callback style plugins).
+
+- If you want to return `boolean`, you must return `v:true`/`v:false` instead of `0`/`1`.
+
+```vim
+let s:source = {}
+
+function! s:source.new() abort
+  return extend(deepcopy(s:source))
+endfunction
+
+" The other APIs are also available.
+
+function! s:source.complete(params, callback) abort
+  call a:callback({
+  \   { 'label': 'January' },
+  \   { 'label': 'February' },
+  \   { 'label': 'March' },
+  \   { 'label': 'April' },
+  \   { 'label': 'May' },
+  \   { 'label': 'June' },
+  \   { 'label': 'July' },
+  \   { 'label': 'August' },
+  \   { 'label': 'September' },
+  \   { 'label': 'October' },
+  \   { 'label': 'November' },
+  \   { 'label': 'December' },
+  \ })
+endfunction
+
+call cmp#register_source('month', s:source.new())
+```

bundle/nvim-cmp/autoload/cmp.vim

@@ -0,0 +1,76 @@
+let s:bridge_id = 0
+let s:sources = {}
+
+"
+" cmp#apply_text_edits
+"
+" TODO: Remove this if nvim's apply_text_edits will be improved.
+"
+function! cmp#apply_text_edits(bufnr, text_edits) abort
+  if !exists('s:TextEdit')
+    let s:TextEdit = vital#cmp#import('VS.LSP.TextEdit')
+  endif
+  call s:TextEdit.apply(a:bufnr, a:text_edits)
+endfunction
+
+"
+" cmp#register_source
+"
+function! cmp#register_source(name, source) abort
+  let l:methods = []
+  for l:method in ['is_available', 'get_debug_name', 'get_trigger_characters', 'get_keyword_pattern', 'complete', 'execute', 'resolve']
+    if has_key(a:source, l:method) && type(a:source[l:method]) == v:t_func
+      call add(l:methods, l:method)
+    endif
+  endfor
+
+  let s:bridge_id += 1
+  let a:source.bridge_id = s:bridge_id
+  let a:source.id = luaeval('require("cmp").register_source(_A[1], require("cmp.vim_source").new(_A[2], _A[3]))', [a:name, s:bridge_id, l:methods])
+  let s:sources[s:bridge_id] = a:source
+  return a:source.id
+endfunction
+
+"
+" cmp#unregister_source
+"
+function! cmp#unregister_source(id) abort
+  if has_key(s:sources, a:id)
+    unlet s:sources[a:id]
+  endif
+  call luaeval('require("cmp").unregister_source(_A)', a:id)
+endfunction
+
+"
+" cmp#_method
+"
+function! cmp#_method(bridge_id, method, args) abort
+  try
+    let l:source = s:sources[a:bridge_id]
+    if a:method ==# 'is_available'
+      return l:source[a:method]()
+    elseif a:method ==# 'get_debug_name'
+      return l:source[a:method]()
+    elseif a:method ==# 'get_keyword_pattern'
+      return l:source[a:method](a:args[0])
+    elseif a:method ==# 'get_trigger_characters'
+      return l:source[a:method](a:args[0])
+    elseif a:method ==# 'complete'
+      return l:source[a:method](a:args[0], s:callback(a:args[1]))
+    elseif a:method ==# 'resolve'
+      return l:source[a:method](a:args[0], s:callback(a:args[1]))
+    elseif a:method ==# 'execute'
+      return l:source[a:method](a:args[0], s:callback(a:args[1]))
+    endif
+  catch /.*/
+    echomsg string({ 'exception': v:exception, 'throwpoint': v:throwpoint })
+  endtry
+  return v:null
+endfunction
+
+"
+" s:callback
+"
+function! s:callback(id) abort
+  return { ... -> luaeval('require("cmp.vim_source").on_callback(_A[1], _A[2])', [a:id, a:000]) }
+endfunction

bundle/nvim-cmp/autoload/vital/_cmp.vim

@@ -0,0 +1,9 @@
+let s:_plugin_name = expand('<sfile>:t:r')
+
+function! vital#{s:_plugin_name}#new() abort
+  return vital#{s:_plugin_name[1:]}#new()
+endfunction
+
+function! vital#{s:_plugin_name}#function(funcname) abort
+  silent! return function(a:funcname)
+endfunction

bundle/nvim-cmp/autoload/vital/_cmp/VS/LSP/Position.vim

@@ -0,0 +1,62 @@
+" ___vital___
+" NOTE: lines between '" ___vital___' is generated by :Vitalize.
+" Do not modify the code nor insert new lines before '" ___vital___'
+function! s:_SID() abort
+  return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
+endfunction
+execute join(['function! vital#_cmp#VS#LSP#Position#import() abort', printf("return map({'cursor': '', 'vim_to_lsp': '', 'lsp_to_vim': ''}, \"vital#_cmp#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+delfunction s:_SID
+" ___vital___
+"
+" cursor
+"
+function! s:cursor() abort
+  return s:vim_to_lsp('%', getpos('.')[1 : 3])
+endfunction
+
+"
+" vim_to_lsp
+"
+function! s:vim_to_lsp(expr, pos) abort
+  let l:line = s:_get_buffer_line(a:expr, a:pos[0])
+  if l:line is v:null
+    return {
+    \   'line': a:pos[0] - 1,
+    \   'character': a:pos[1] - 1
+    \ }
+  endif
+
+  return {
+  \   'line': a:pos[0] - 1,
+  \   'character': strchars(strpart(l:line, 0, a:pos[1] - 1))
+  \ }
+endfunction
+
+"
+" lsp_to_vim
+"
+function! s:lsp_to_vim(expr, position) abort
+  let l:line = s:_get_buffer_line(a:expr, a:position.line + 1)
+  if l:line is v:null
+    return [a:position.line + 1, a:position.character + 1]
+  endif
+  return [a:position.line + 1, byteidx(l:line, a:position.character) + 1]
+endfunction
+
+"
+" _get_buffer_line
+"
+function! s:_get_buffer_line(expr, lnum) abort
+  try
+    let l:expr = bufnr(a:expr)
+  catch /.*/
+    let l:expr = a:expr
+  endtry
+  if bufloaded(l:expr)
+    return get(getbufline(l:expr, a:lnum), 0, v:null)
+  elseif filereadable(a:expr)
+    return get(readfile(a:expr, '', a:lnum), 0, v:null)
+  endif
+  return v:null
+endfunction
+

bundle/nvim-cmp/autoload/vital/_cmp/VS/LSP/Text.vim

@@ -0,0 +1,23 @@
+" ___vital___
+" NOTE: lines between '" ___vital___' is generated by :Vitalize.
+" Do not modify the code nor insert new lines before '" ___vital___'
+function! s:_SID() abort
+  return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
+endfunction
+execute join(['function! vital#_cmp#VS#LSP#Text#import() abort', printf("return map({'normalize_eol': '', 'split_by_eol': ''}, \"vital#_cmp#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+delfunction s:_SID
+" ___vital___
+"
+" normalize_eol
+"
+function! s:normalize_eol(text) abort
+  return substitute(a:text, "\r\n\\|\r", "\n", 'g')
+endfunction
+
+"
+" split_by_eol
+"
+function! s:split_by_eol(text) abort
+  return split(a:text, "\r\n\\|\r\\|\n", v:true)
+endfunction
+

bundle/nvim-cmp/autoload/vital/_cmp/VS/LSP/TextEdit.vim

@@ -0,0 +1,185 @@
+" ___vital___
+" NOTE: lines between '" ___vital___' is generated by :Vitalize.
+" Do not modify the code nor insert new lines before '" ___vital___'
+function! s:_SID() abort
+  return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
+endfunction
+execute join(['function! vital#_cmp#VS#LSP#TextEdit#import() abort', printf("return map({'_vital_depends': '', 'apply': '', '_vital_loaded': ''}, \"vital#_cmp#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+delfunction s:_SID
+" ___vital___
+"
+" _vital_loaded
+"
+function! s:_vital_loaded(V) abort
+  let s:Text = a:V.import('VS.LSP.Text')
+  let s:Position = a:V.import('VS.LSP.Position')
+  let s:Buffer = a:V.import('VS.Vim.Buffer')
+  let s:Option = a:V.import('VS.Vim.Option')
+endfunction
+
+"
+" _vital_depends
+"
+function! s:_vital_depends() abort
+  return ['VS.LSP.Text', 'VS.LSP.Position', 'VS.Vim.Buffer', 'VS.Vim.Option']
+endfunction
+
+"
+" apply
+"
+function! s:apply(path, text_edits) abort
+  let l:current_bufname = bufname('%')
+  let l:current_position = s:Position.cursor()
+
+  let l:target_bufnr = s:_switch(a:path)
+  call s:_substitute(l:target_bufnr, a:text_edits, l:current_position)
+  let l:current_bufnr = s:_switch(l:current_bufname)
+
+  if l:current_bufnr == l:target_bufnr
+    call cursor(s:Position.lsp_to_vim('%', l:current_position))
+  endif
+endfunction
+
+"
+" _substitute
+"
+function! s:_substitute(bufnr, text_edits, current_position) abort
+  try
+    " Save state.
+    let l:Restore = s:Option.define({
+    \   'foldenable': '0',
+    \ })
+    let l:view = winsaveview()
+
+    " Apply substitute.
+    let [l:fixeol, l:text_edits] = s:_normalize(a:bufnr, a:text_edits)
+    for l:text_edit in l:text_edits
+      let l:start = s:Position.lsp_to_vim(a:bufnr, l:text_edit.range.start)
+      let l:end = s:Position.lsp_to_vim(a:bufnr, l:text_edit.range.end)
+      let l:text = s:Text.normalize_eol(l:text_edit.newText)
+      execute printf('noautocmd keeppatterns keepjumps silent %ssubstitute/\%%%sl\%%%sc\_.\{-}\%%%sl\%%%sc/\=l:text/%se',
+      \   l:start[0],
+      \   l:start[0],
+      \   l:start[1],
+      \   l:end[0],
+      \   l:end[1],
+      \   &gdefault ? 'g' : ''
+      \ )
+      call s:_fix_cursor_position(a:current_position, l:text_edit, s:Text.split_by_eol(l:text))
+    endfor
+
+    " Remove last empty line if fixeol enabled.
+    if l:fixeol && getline('$') ==# ''
+      noautocmd keeppatterns keepjumps silent $delete _
+    endif
+  catch /.*/
+    echomsg string({ 'exception': v:exception, 'throwpoint': v:throwpoint })
+  finally
+    " Restore state.
+    call l:Restore()
+    call winrestview(l:view)
+  endtry
+endfunction
+
+"
+" _fix_cursor_position
+"
+function! s:_fix_cursor_position(position, text_edit, lines) abort
+  let l:lines_len = len(a:lines)
+  let l:range_len = (a:text_edit.range.end.line - a:text_edit.range.start.line) + 1
+
+  if a:text_edit.range.end.line < a:position.line
+    let a:position.line += l:lines_len - l:range_len
+  elseif a:text_edit.range.end.line == a:position.line && a:text_edit.range.end.character <= a:position.character
+    let a:position.line += l:lines_len - l:range_len
+    let a:position.character = strchars(a:lines[-1]) + (a:position.character - a:text_edit.range.end.character)
+    if l:lines_len == 1
+      let a:position.character += a:text_edit.range.start.character
+    endif
+  endif
+endfunction
+
+"
+" _normalize
+"
+function! s:_normalize(bufnr, text_edits) abort
+  let l:text_edits = type(a:text_edits) == type([]) ? a:text_edits : [a:text_edits]
+  let l:text_edits = s:_range(l:text_edits)
+  let l:text_edits = sort(l:text_edits, function('s:_compare'))
+  let l:text_edits = reverse(l:text_edits)
+  return s:_fix_text_edits(a:bufnr, l:text_edits)
+endfunction
+
+"
+" _range
+"
+function! s:_range(text_edits) abort
+  let l:text_edits = []
+  for l:text_edit in a:text_edits
+    if type(l:text_edit) != type({})
+      continue
+    endif
+    if l:text_edit.range.start.line > l:text_edit.range.end.line || (
+    \   l:text_edit.range.start.line == l:text_edit.range.end.line &&
+    \   l:text_edit.range.start.character > l:text_edit.range.end.character
+    \ )
+      let l:text_edit.range = { 'start': l:text_edit.range.end, 'end': l:text_edit.range.start }
+    endif
+    let l:text_edits += [l:text_edit]
+  endfor
+  return l:text_edits
+endfunction
+
+"
+" _compare
+"
+function! s:_compare(text_edit1, text_edit2) abort
+  let l:diff = a:text_edit1.range.start.line - a:text_edit2.range.start.line
+  if l:diff == 0
+    return a:text_edit1.range.start.character - a:text_edit2.range.start.character
+  endif
+  return l:diff
+endfunction
+
+"
+" _fix_text_edits
+"
+function! s:_fix_text_edits(bufnr, text_edits) abort
+  let l:max = s:Buffer.get_line_count(a:bufnr)
+
+  let l:fixeol = v:false
+  let l:text_edits = []
+  for l:text_edit in a:text_edits
+    if l:max <= l:text_edit.range.start.line
+      let l:text_edit.range.start.line = l:max - 1
+      let l:text_edit.range.start.character = strchars(get(getbufline(a:bufnr, '$'), 0, ''))
+      let l:text_edit.newText = "\n" . l:text_edit.newText
+      let l:fixeol = &fixendofline && !&binary
+    endif
+    if l:max <= l:text_edit.range.end.line
+      let l:text_edit.range.end.line = l:max - 1
+      let l:text_edit.range.end.character = strchars(get(getbufline(a:bufnr, '$'), 0, ''))
+      let l:fixeol = &fixendofline && !&binary
+    endif
+    call add(l:text_edits, l:text_edit)
+  endfor
+
+  return [l:fixeol, l:text_edits]
+endfunction
+
+"
+" _switch
+"
+function! s:_switch(path) abort
+  let l:curr = bufnr('%')
+  let l:next = bufnr(a:path)
+  if l:next >= 0
+    if l:curr != l:next
+      execute printf('noautocmd keepalt keepjumps %sbuffer!', bufnr(a:path))
+    endif
+  else
+    execute printf('noautocmd keepalt keepjumps edit! %s', fnameescape(a:path))
+  endif
+  return bufnr('%')
+endfunction
+

bundle/nvim-cmp/autoload/vital/_cmp/VS/Vim/Buffer.vim

@@ -0,0 +1,126 @@
+" ___vital___
+" NOTE: lines between '" ___vital___' is generated by :Vitalize.
+" Do not modify the code nor insert new lines before '" ___vital___'
+function! s:_SID() abort
+  return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
+endfunction
+execute join(['function! vital#_cmp#VS#Vim#Buffer#import() abort', printf("return map({'get_line_count': '', 'do': '', 'create': '', 'pseudo': '', 'ensure': '', 'load': ''}, \"vital#_cmp#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+delfunction s:_SID
+" ___vital___
+let s:Do = { -> {} }
+
+let g:___VS_Vim_Buffer_id = get(g:, '___VS_Vim_Buffer_id', 0)
+
+"
+" get_line_count
+"
+if exists('*nvim_buf_line_count')
+  function! s:get_line_count(bufnr) abort
+    return nvim_buf_line_count(a:bufnr)
+  endfunction
+elseif has('patch-8.2.0019')
+  function! s:get_line_count(bufnr) abort
+    return getbufinfo(a:bufnr)[0].linecount
+  endfunction
+else
+  function! s:get_line_count(bufnr) abort
+    if bufnr('%') == bufnr(a:bufnr)
+      return line('$')
+    endif
+    return len(getbufline(a:bufnr, '^', '$'))
+  endfunction
+endif
+
+"
+" create
+"
+function! s:create(...) abort
+  let g:___VS_Vim_Buffer_id += 1
+  let l:bufname = printf('VS.Vim.Buffer: %s: %s',
+  \   g:___VS_Vim_Buffer_id,
+  \   get(a:000, 0, 'VS.Vim.Buffer.Default')
+  \ )
+  return s:load(l:bufname)
+endfunction
+
+"
+" ensure
+"
+function! s:ensure(expr) abort
+  if !bufexists(a:expr)
+    if type(a:expr) == type(0)
+      throw printf('VS.Vim.Buffer: `%s` is not valid expr.', a:expr)
+    endif
+    badd `=a:expr`
+  endif
+  return bufnr(a:expr)
+endfunction
+
+"
+" load
+"
+if exists('*bufload')
+  function! s:load(expr) abort
+    let l:bufnr = s:ensure(a:expr)
+    if !bufloaded(l:bufnr)
+      call bufload(l:bufnr)
+    endif
+    return l:bufnr
+  endfunction
+else
+  function! s:load(expr) abort
+    let l:curr_bufnr = bufnr('%')
+    try
+      let l:bufnr = s:ensure(a:expr)
+      execute printf('keepalt keepjumps silent %sbuffer', l:bufnr)
+    catch /.*/
+      echomsg string({ 'exception': v:exception, 'throwpoint': v:throwpoint })
+    finally
+      execute printf('noautocmd keepalt keepjumps silent %sbuffer', l:curr_bufnr)
+    endtry
+    return l:bufnr
+  endfunction
+endif
+
+"
+" do
+"
+function! s:do(bufnr, func) abort
+  let l:curr_bufnr = bufnr('%')
+  if l:curr_bufnr == a:bufnr
+    call a:func()
+    return
+  endif
+
+  try
+    execute printf('noautocmd keepalt keepjumps silent %sbuffer', a:bufnr)
+    call a:func()
+  catch /.*/
+    echomsg string({ 'exception': v:exception, 'throwpoint': v:throwpoint })
+  finally
+    execute printf('noautocmd keepalt keepjumps silent %sbuffer', l:curr_bufnr)
+  endtry
+endfunction
+
+"
+" pseudo
+"
+function! s:pseudo(filepath) abort
+  if !filereadable(a:filepath)
+    throw printf('VS.Vim.Buffer: `%s` is not valid filepath.', a:filepath)
+  endif
+
+  " create pseudo buffer
+  let l:bufname = printf('VSVimBufferPseudo://%s', a:filepath)
+  if bufexists(l:bufname)
+    return s:ensure(l:bufname)
+  endif
+
+  let l:bufnr = s:ensure(l:bufname)
+  let l:group = printf('VS_Vim_Buffer_pseudo:%s', l:bufnr)
+  execute printf('augroup %s', l:group)
+    execute printf('autocmd BufReadCmd <buffer=%s> call setline(1, readfile(bufname("%")[20 : -1])) | try | filetype detect | catch /.*/ | endtry | augroup %s | autocmd! | augroup END', l:bufnr, l:group)
+  augroup END
+  return l:bufnr
+endfunction
+

bundle/nvim-cmp/autoload/vital/_cmp/VS/Vim/Option.vim

@@ -0,0 +1,21 @@
+" ___vital___
+" NOTE: lines between '" ___vital___' is generated by :Vitalize.
+" Do not modify the code nor insert new lines before '" ___vital___'
+function! s:_SID() abort
+  return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
+endfunction
+execute join(['function! vital#_cmp#VS#Vim#Option#import() abort', printf("return map({'define': ''}, \"vital#_cmp#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+delfunction s:_SID
+" ___vital___
+"
+" define
+"
+function! s:define(map) abort
+  let l:old = {}
+  for [l:key, l:value] in items(a:map)
+    let l:old[l:key] = eval(printf('&%s', l:key))
+    execute printf('let &%s = "%s"', l:key, l:value)
+  endfor
+  return { -> s:define(l:old) }
+endfunction
+

bundle/nvim-cmp/autoload/vital/cmp.vim

@@ -0,0 +1,330 @@
+let s:plugin_name = expand('<sfile>:t:r')
+let s:vital_base_dir = expand('<sfile>:h')
+let s:project_root = expand('<sfile>:h:h:h')
+let s:is_vital_vim = s:plugin_name is# 'vital'
+
+let s:loaded = {}
+let s:cache_sid = {}
+
+function! vital#{s:plugin_name}#new() abort
+  return s:new(s:plugin_name)
+endfunction
+
+function! vital#{s:plugin_name}#import(...) abort
+  if !exists('s:V')
+    let s:V = s:new(s:plugin_name)
+  endif
+  return call(s:V.import, a:000, s:V)
+endfunction
+
+let s:Vital = {}
+
+function! s:new(plugin_name) abort
+  let base = deepcopy(s:Vital)
+  let base._plugin_name = a:plugin_name
+  return base
+endfunction
+
+function! s:vital_files() abort
+  if !exists('s:vital_files')
+    let s:vital_files = map(
+    \   s:is_vital_vim ? s:_global_vital_files() : s:_self_vital_files(),
+    \   'fnamemodify(v:val, ":p:gs?[\\\\/]?/?")')
+  endif
+  return copy(s:vital_files)
+endfunction
+let s:Vital.vital_files = function('s:vital_files')
+
+function! s:import(name, ...) abort dict
+  let target = {}
+  let functions = []
+  for a in a:000
+    if type(a) == type({})
+      let target = a
+    elseif type(a) == type([])
+      let functions = a
+    endif
+    unlet a
+  endfor
+  let module = self._import(a:name)
+  if empty(functions)
+    call extend(target, module, 'keep')
+  else
+    for f in functions
+      if has_key(module, f) && !has_key(target, f)
+        let target[f] = module[f]
+      endif
+    endfor
+  endif
+  return target
+endfunction
+let s:Vital.import = function('s:import')
+
+function! s:load(...) abort dict
+  for arg in a:000
+    let [name; as] = type(arg) == type([]) ? arg[: 1] : [arg, arg]
+    let target = split(join(as, ''), '\W\+')
+    let dict = self
+    let dict_type = type({})
+    while !empty(target)
+      let ns = remove(target, 0)
+      if !has_key(dict, ns)
+        let dict[ns] = {}
+      endif
+      if type(dict[ns]) == dict_type
+        let dict = dict[ns]
+      else
+        unlet dict
+        break
+      endif
+    endwhile
+    if exists('dict')
+      call extend(dict, self._import(name))
+    endif
+    unlet arg
+  endfor
+  return self
+endfunction
+let s:Vital.load = function('s:load')
+
+function! s:unload() abort dict
+  let s:loaded = {}
+  let s:cache_sid = {}
+  unlet! s:vital_files
+endfunction
+let s:Vital.unload = function('s:unload')
+
+function! s:exists(name) abort dict
+  if a:name !~# '\v^\u\w*%(\.\u\w*)*$'
+    throw 'vital: Invalid module name: ' . a:name
+  endif
+  return s:_module_path(a:name) isnot# ''
+endfunction
+let s:Vital.exists = function('s:exists')
+
+function! s:search(pattern) abort dict
+  let paths = s:_extract_files(a:pattern, self.vital_files())
+  let modules = sort(map(paths, 's:_file2module(v:val)'))
+  return uniq(modules)
+endfunction
+let s:Vital.search = function('s:search')
+
+function! s:plugin_name() abort dict
+  return self._plugin_name
+endfunction
+let s:Vital.plugin_name = function('s:plugin_name')
+
+function! s:_self_vital_files() abort
+  let builtin = printf('%s/__%s__/', s:vital_base_dir, s:plugin_name)
+  let installed = printf('%s/_%s/', s:vital_base_dir, s:plugin_name)
+  let base = builtin . ',' . installed
+  return split(globpath(base, '**/*.vim', 1), "\n")
+endfunction
+
+function! s:_global_vital_files() abort
+  let pattern = 'autoload/vital/__*__/**/*.vim'
+  return split(globpath(&runtimepath, pattern, 1), "\n")
+endfunction
+
+function! s:_extract_files(pattern, files) abort
+  let tr = {'.': '/', '*': '[^/]*', '**': '.*'}
+  let target = substitute(a:pattern, '\.\|\*\*\?', '\=tr[submatch(0)]', 'g')
+  let regexp = printf('autoload/vital/[^/]\+/%s.vim$', target)
+  return filter(a:files, 'v:val =~# regexp')
+endfunction
+
+function! s:_file2module(file) abort
+  let filename = fnamemodify(a:file, ':p:gs?[\\/]?/?')
+  let tail = matchstr(filename, 'autoload/vital/_\w\+/\zs.*\ze\.vim$')
+  return join(split(tail, '[\\/]\+'), '.')
+endfunction
+
+" @param {string} name e.g. Data.List
+function! s:_import(name) abort dict
+  if has_key(s:loaded, a:name)
+    return copy(s:loaded[a:name])
+  endif
+  let module = self._get_module(a:name)
+  if has_key(module, '_vital_created')
+    call module._vital_created(module)
+  endif
+  let export_module = filter(copy(module), 'v:key =~# "^\\a"')
+  " Cache module before calling module._vital_loaded() to avoid cyclic
+  " dependences but remove the cache if module._vital_loaded() fails.
+  " let s:loaded[a:name] = export_module
+  let s:loaded[a:name] = export_module
+  if has_key(module, '_vital_loaded')
+    try
+      call module._vital_loaded(vital#{s:plugin_name}#new())
+    catch
+      unlet s:loaded[a:name]
+      throw 'vital: fail to call ._vital_loaded(): ' . v:exception . " from:\n" . s:_format_throwpoint(v:throwpoint)
+    endtry
+  endif
+  return copy(s:loaded[a:name])
+endfunction
+let s:Vital._import = function('s:_import')
+
+function! s:_format_throwpoint(throwpoint) abort
+  let funcs = []
+  let stack = matchstr(a:throwpoint, '^function \zs.*, .\{-} \d\+$')
+  for line in split(stack, '\.\.')
+    let m = matchlist(line, '^\(.\+\)\%(\[\(\d\+\)\]\|, .\{-} \(\d\+\)\)$')
+    if !empty(m)
+      let [name, lnum, lnum2] = m[1:3]
+      if empty(lnum)
+        let lnum = lnum2
+      endif
+      let info = s:_get_func_info(name)
+      if !empty(info)
+        let attrs = empty(info.attrs) ? '' : join([''] + info.attrs)
+        let flnum = info.lnum == 0 ? '' : printf(' Line:%d', info.lnum + lnum)
+        call add(funcs, printf('function %s(...)%s Line:%d (%s%s)',
+        \        info.funcname, attrs, lnum, info.filename, flnum))
+        continue
+      endif
+    endif
+    " fallback when function information cannot be detected
+    call add(funcs, line)
+  endfor
+  return join(funcs, "\n")
+endfunction
+
+function! s:_get_func_info(name) abort
+  let name = a:name
+  if a:name =~# '^\d\+$'  " is anonymous-function
+    let name = printf('{%s}', a:name)
+  elseif a:name =~# '^<lambda>\d\+$'  " is lambda-function
+    let name = printf("{'%s'}", a:name)
+  endif
+  if !exists('*' . name)
+    return {}
+  endif
+  let body = execute(printf('verbose function %s', name))
+  let lines = split(body, "\n")
+  let signature = matchstr(lines[0], '^\s*\zs.*')
+  let [_, file, lnum; __] = matchlist(lines[1],
+  \   '^\t\%(Last set from\|.\{-}:\)\s*\zs\(.\{-}\)\%( \S\+ \(\d\+\)\)\?$')
+  return {
+  \   'filename': substitute(file, '[/\\]\+', '/', 'g'),
+  \   'lnum': 0 + lnum,
+  \   'funcname': a:name,
+  \   'arguments': split(matchstr(signature, '(\zs.*\ze)'), '\s*,\s*'),
+  \   'attrs': filter(['dict', 'abort', 'range', 'closure'], 'signature =~# (").*" . v:val)'),
+  \ }
+endfunction
+
+" s:_get_module() returns module object wihch has all script local functions.
+function! s:_get_module(name) abort dict
+  let funcname = s:_import_func_name(self.plugin_name(), a:name)
+  try
+    return call(funcname, [])
+  catch /^Vim\%((\a\+)\)\?:E117:/
+    return s:_get_builtin_module(a:name)
+  endtry
+endfunction
+
+function! s:_get_builtin_module(name) abort
+ return s:sid2sfuncs(s:_module_sid(a:name))
+endfunction
+
+if s:is_vital_vim
+  " For vital.vim, we can use s:_get_builtin_module directly
+  let s:Vital._get_module = function('s:_get_builtin_module')
+else
+  let s:Vital._get_module = function('s:_get_module')
+endif
+
+function! s:_import_func_name(plugin_name, module_name) abort
+  return printf('vital#_%s#%s#import', a:plugin_name, s:_dot_to_sharp(a:module_name))
+endfunction
+
+function! s:_module_sid(name) abort
+  let path = s:_module_path(a:name)
+  if !filereadable(path)
+    throw 'vital: module not found: ' . a:name
+  endif
+  let vital_dir = s:is_vital_vim ? '__\w\+__' : printf('_\{1,2}%s\%%(__\)\?', s:plugin_name)
+  let base = join([vital_dir, ''], '[/\\]\+')
+  let p = base . substitute('' . a:name, '\.', '[/\\\\]\\+', 'g')
+  let sid = s:_sid(path, p)
+  if !sid
+    call s:_source(path)
+    let sid = s:_sid(path, p)
+    if !sid
+      throw printf('vital: cannot get <SID> from path: %s', path)
+    endif
+  endif
+  return sid
+endfunction
+
+function! s:_module_path(name) abort
+  return get(s:_extract_files(a:name, s:vital_files()), 0, '')
+endfunction
+
+function! s:_module_sid_base_dir() abort
+  return s:is_vital_vim ? &rtp : s:project_root
+endfunction
+
+function! s:_dot_to_sharp(name) abort
+  return substitute(a:name, '\.', '#', 'g')
+endfunction
+
+function! s:_source(path) abort
+  execute 'source' fnameescape(a:path)
+endfunction
+
+" @vimlint(EVL102, 1, l:_)
+" @vimlint(EVL102, 1, l:__)
+function! s:_sid(path, filter_pattern) abort
+  let unified_path = s:_unify_path(a:path)
+  if has_key(s:cache_sid, unified_path)
+    return s:cache_sid[unified_path]
+  endif
+  for line in filter(split(execute(':scriptnames'), "\n"), 'v:val =~# a:filter_pattern')
+    let [_, sid, path; __] = matchlist(line, '^\s*\(\d\+\):\s\+\(.\+\)\s*$')
+    if s:_unify_path(path) is# unified_path
+      let s:cache_sid[unified_path] = sid
+      return s:cache_sid[unified_path]
+    endif
+  endfor
+  return 0
+endfunction
+
+if filereadable(expand('<sfile>:r') . '.VIM') " is case-insensitive or not
+  let s:_unify_path_cache = {}
+  " resolve() is slow, so we cache results.
+  " Note: On windows, vim can't expand path names from 8.3 formats.
+  " So if getting full path via <sfile> and $HOME was set as 8.3 format,
+  " vital load duplicated scripts. Below's :~ avoid this issue.
+  function! s:_unify_path(path) abort
+    if has_key(s:_unify_path_cache, a:path)
+      return s:_unify_path_cache[a:path]
+    endif
+    let value = tolower(fnamemodify(resolve(fnamemodify(
+    \                   a:path, ':p')), ':~:gs?[\\/]?/?'))
+    let s:_unify_path_cache[a:path] = value
+    return value
+  endfunction
+else
+  function! s:_unify_path(path) abort
+    return resolve(fnamemodify(a:path, ':p:gs?[\\/]?/?'))
+  endfunction
+endif
+
+" copied and modified from Vim.ScriptLocal
+let s:SNR = join(map(range(len("\<SNR>")), '"[\\x" . printf("%0x", char2nr("\<SNR>"[v:val])) . "]"'), '')
+function! s:sid2sfuncs(sid) abort
+  let fs = split(execute(printf(':function /^%s%s_', s:SNR, a:sid)), "\n")
+  let r = {}
+  let pattern = printf('\m^function\s<SNR>%d_\zs\w\{-}\ze(', a:sid)
+  for fname in map(fs, 'matchstr(v:val, pattern)')
+    let r[fname] = function(s:_sfuncname(a:sid, fname))
+  endfor
+  return r
+endfunction
+
+"" Return funcname of script local functions with SID
+function! s:_sfuncname(sid, funcname) abort
+  return printf('<SNR>%s_%s', a:sid, a:funcname)
+endfunction

bundle/nvim-cmp/autoload/vital/cmp.vital

@@ -0,0 +1,4 @@
+cmp
+2755f0c8fbd3442bcb7f567832e4d1455b57f9a2
+
+VS.LSP.TextEdit

bundle/nvim-cmp/init.sh

@@ -0,0 +1,7 @@
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+rm $DIR/.git/hooks/*
+cp $DIR/.githooks/* $DIR/.git/hooks/
+chmod 755 $DIR/.git/hooks/*
+
+

bundle/nvim-cmp/lua/cmp/config.lua

@@ -0,0 +1,104 @@
+local mapping = require('cmp.config.mapping')
+local cache = require('cmp.utils.cache')
+local keymap = require('cmp.utils.keymap')
+local misc = require('cmp.utils.misc')
+local api = require('cmp.utils.api')
+
+---@class cmp.Config
+---@field public g cmp.ConfigSchema
+local config = {}
+
+---@type cmp.Cache
+config.cache = cache.new()
+
+---@type cmp.ConfigSchema
+config.global = require('cmp.config.default')()
+
+---@type table<number, cmp.ConfigSchema>
+config.buffers = {}
+
+---@type table<string, cmp.ConfigSchema>
+config.cmdline = {}
+
+---Set configuration for global.
+---@param c cmp.ConfigSchema
+config.set_global = function(c)
+  config.global = misc.merge(c, config.global)
+  config.global.revision = config.global.revision or 1
+  config.global.revision = config.global.revision + 1
+end
+
+---Set configuration for buffer
+---@param c cmp.ConfigSchema
+---@param bufnr number|nil
+config.set_buffer = function(c, bufnr)
+  local revision = (config.buffers[bufnr] or {}).revision or 1
+  config.buffers[bufnr] = c
+  config.buffers[bufnr].revision = revision + 1
+end
+
+---Set configuration for cmdline
+config.set_cmdline = function(c, type)
+  local revision = (config.cmdline[type] or {}).revision or 1
+  config.cmdline[type] = c
+  config.cmdline[type].revision = revision + 1
+end
+
+---@return cmp.ConfigSchema
+config.get = function()
+  local global = config.global
+  if api.is_cmdline_mode() then
+    local type = vim.fn.getcmdtype()
+    local cmdline = config.cmdline[type] or { revision = 1, sources = {} }
+    return config.cache:ensure({ 'get_cmdline', type, global.revision or 0, cmdline.revision or 0 }, function()
+      return misc.merge(config.normalize(cmdline), config.normalize(global))
+    end)
+  else
+    local bufnr = vim.api.nvim_get_current_buf()
+    local buffer = config.buffers[bufnr] or { revision = 1 }
+    return config.cache:ensure({ 'get_buffer', bufnr, global.revision or 0, buffer.revision or 0 }, function()
+      return misc.merge(config.normalize(buffer), config.normalize(global))
+    end)
+  end
+end
+
+---Return cmp is enabled or not.
+config.enabled = function()
+  local enabled = config.get().enabled
+  if type(enabled) == 'function' then
+    enabled = enabled()
+  end
+  return enabled and api.is_suitable_mode()
+end
+
+---Return source config
+---@param name string
+---@return cmp.SourceConfig
+config.get_source_config = function(name)
+  local c = config.get()
+  for _, s in ipairs(c.sources) do
+    if s.name == name then
+      if type(s.opts) ~= 'table' then
+        s.opts = {}
+      end
+      return s
+    end
+  end
+  return nil
+end
+
+---Normalize mapping key
+---@param c cmp.ConfigSchema
+---@return cmp.ConfigSchema
+config.normalize = function(c)
+  if c.mapping then
+    local normalized = {}
+    for k, v in pairs(c.mapping) do
+      normalized[keymap.normalize(k)] = mapping(v, { 'i' })
+    end
+    c.mapping = normalized
+  end
+  return c
+end
+
+return config

bundle/nvim-cmp/lua/cmp/config/compare.lua

@@ -0,0 +1,103 @@
+local types = require('cmp.types')
+local misc = require('cmp.utils.misc')
+
+local compare = {}
+
+-- offset
+compare.offset = function(entry1, entry2)
+  local diff = entry1:get_offset() - entry2:get_offset()
+  if diff < 0 then
+    return true
+  elseif diff > 0 then
+    return false
+  end
+end
+
+-- exact
+compare.exact = function(entry1, entry2)
+  if entry1.exact ~= entry2.exact then
+    return entry1.exact
+  end
+end
+
+-- score
+compare.score = function(entry1, entry2)
+  local diff = entry2.score - entry1.score
+  if diff < 0 then
+    return true
+  elseif diff > 0 then
+    return false
+  end
+end
+
+-- recently_used
+compare.recently_used = setmetatable({
+  records = {},
+  add_entry = function(self, e)
+    self.records[e.completion_item.label] = vim.loop.now()
+  end,
+}, {
+  __call = function(self, entry1, entry2)
+    local t1 = self.records[entry1.completion_item.label] or -1
+    local t2 = self.records[entry2.completion_item.label] or -1
+    if t1 ~= t2 then
+      return t1 > t2
+    end
+  end,
+})
+
+-- kind
+compare.kind = function(entry1, entry2)
+  local kind1 = entry1:get_kind()
+  kind1 = kind1 == types.lsp.CompletionItemKind.Text and 100 or kind1
+  local kind2 = entry2:get_kind()
+  kind2 = kind2 == types.lsp.CompletionItemKind.Text and 100 or kind2
+  if kind1 ~= kind2 then
+    if kind1 == types.lsp.CompletionItemKind.Snippet then
+      return true
+    end
+    if kind2 == types.lsp.CompletionItemKind.Snippet then
+      return false
+    end
+    local diff = kind1 - kind2
+    if diff < 0 then
+      return true
+    elseif diff > 0 then
+      return false
+    end
+  end
+end
+
+-- sortText
+compare.sort_text = function(entry1, entry2)
+  if misc.safe(entry1.completion_item.sortText) and misc.safe(entry2.completion_item.sortText) then
+    local diff = vim.stricmp(entry1.completion_item.sortText, entry2.completion_item.sortText)
+    if diff < 0 then
+      return true
+    elseif diff > 0 then
+      return false
+    end
+  end
+end
+
+-- length
+compare.length = function(entry1, entry2)
+  local diff = #entry1.completion_item.label - #entry2.completion_item.label
+  if diff < 0 then
+    return true
+  elseif diff > 0 then
+    return false
+  end
+end
+
+-- order
+compare.order = function(entry1, entry2)
+  local diff = entry1.id - entry2.id
+  if diff < 0 then
+    return true
+  elseif diff > 0 then
+    return false
+  end
+end
+
+return compare

bundle/nvim-cmp/lua/cmp/config/default.lua

@@ -0,0 +1,130 @@
+local compare = require('cmp.config.compare')
+local mapping = require('cmp.config.mapping')
+local types = require('cmp.types')
+
+local WIDE_HEIGHT = 40
+
+---@return cmp.ConfigSchema
+return function()
+  return {
+    enabled = function()
+      return vim.api.nvim_buf_get_option(0, 'buftype') ~= 'prompt'
+    end,
+    completion = {
+      autocomplete = {
+        types.cmp.TriggerEvent.TextChanged,
+      },
+      completeopt = 'menu,menuone,noselect',
+      keyword_pattern = [[\%(-\?\d\+\%(\.\d\+\)\?\|\h\w*\%(-\w*\)*\)]],
+      keyword_length = 1,
+      get_trigger_characters = function(trigger_characters)
+        return trigger_characters
+      end,
+    },
+
+    snippet = {
+      expand = function()
+        error('snippet engine is not configured.')
+      end,
+    },
+
+    preselect = types.cmp.PreselectMode.Item,
+
+    documentation = {
+      border = { '', '', '', ' ', '', '', '', ' ' },
+      winhighlight = 'NormalFloat:NormalFloat,FloatBorder:NormalFloat',
+      maxwidth = math.floor((WIDE_HEIGHT * 2) * (vim.o.columns / (WIDE_HEIGHT * 2 * 16 / 9))),
+      maxheight = math.floor(WIDE_HEIGHT * (WIDE_HEIGHT / vim.o.lines)),
+    },
+
+    confirmation = {
+      default_behavior = types.cmp.ConfirmBehavior.Insert,
+      get_commit_characters = function(commit_characters)
+        return commit_characters
+      end,
+    },
+
+    sorting = {
+      priority_weight = 2,
+      comparators = {
+        compare.offset,
+        compare.exact,
+        compare.score,
+        compare.recently_used,
+        compare.kind,
+        compare.sort_text,
+        compare.length,
+        compare.order,
+      },
+    },
+
+    event = {},
+
+    mapping = {
+      ['<Down>'] = mapping({
+        i = mapping.select_next_item({ behavior = types.cmp.SelectBehavior.Select }),
+        c = function(fallback)
+          local cmp = require('cmp')
+          cmp.close()
+          vim.schedule(cmp.suspend())
+          fallback()
+        end,
+      }),
+      ['<Up>'] = mapping({
+        i = mapping.select_prev_item({ behavior = types.cmp.SelectBehavior.Select }),
+        c = function(fallback)
+          local cmp = require('cmp')
+          cmp.close()
+          vim.schedule(cmp.suspend())
+          fallback()
+        end,
+      }),
+      ['<Tab>'] = mapping({
+        c = function(fallback)
+          local cmp = require('cmp')
+          if #cmp.core:get_sources() > 0 and not cmp.get_config().experimental.native_menu then
+            if cmp.visible() then
+              cmp.select_next_item()
+            else
+              cmp.complete()
+            end
+          else
+            fallback()
+          end
+        end,
+      }),
+      ['<S-Tab>'] = mapping({
+        c = function(fallback)
+          local cmp = require('cmp')
+          if #cmp.core:get_sources() > 0 and not cmp.get_config().experimental.native_menu then
+            if cmp.visible() then
+              cmp.select_prev_item()
+            else
+              cmp.complete()
+            end
+          else
+            fallback()
+          end
+        end,
+      }),
+      ['<C-n>'] = mapping(mapping.select_next_item({ behavior = types.cmp.SelectBehavior.Insert }), { 'i', 'c' }),
+      ['<C-p>'] = mapping(mapping.select_prev_item({ behavior = types.cmp.SelectBehavior.Insert }), { 'i', 'c' }),
+      ['<C-y>'] = mapping.confirm({ select = false }),
+      ['<C-e>'] = mapping.abort(),
+    },
+
+    formatting = {
+      fields = { 'abbr', 'kind', 'menu' },
+      format = function(_, vim_item)
+        return vim_item
+      end,
+    },
+
+    experimental = {
+      native_menu = false,
+      ghost_text = false,
+    },
+
+    sources = {},
+  }
+end

bundle/nvim-cmp/lua/cmp/config/mapping.lua

@@ -0,0 +1,82 @@
+local mapping
+mapping = setmetatable({}, {
+  __call = function(_, invoke, modes)
+    if type(invoke) == 'function' then
+      local map = {}
+      for _, mode in ipairs(modes or { 'i' }) do
+        map[mode] = invoke
+      end
+      return map
+    end
+    return invoke
+  end,
+})
+
+---Invoke completion
+mapping.complete = function()
+  return function(fallback)
+    if not require('cmp').complete() then
+      fallback()
+    end
+  end
+end
+
+---Close current completion menu if it displayed.
+mapping.close = function()
+  return function(fallback)
+    if not require('cmp').close() then
+      fallback()
+    end
+  end
+end
+
+---Abort current completion menu if it displayed.
+mapping.abort = function()
+  return function(fallback)
+    if not require('cmp').abort() then
+      fallback()
+    end
+  end
+end
+
+---Scroll documentation window.
+mapping.scroll_docs = function(delta)
+  return function(fallback)
+    if not require('cmp').scroll_docs(delta) then
+      fallback()
+    end
+  end
+end
+
+---Select next completion item.
+mapping.select_next_item = function(option)
+  return function(fallback)
+    if not require('cmp').select_next_item(option) then
+      local release = require('cmp').core:suspend()
+      fallback()
+      vim.schedule(release)
+    end
+  end
+end
+
+---Select prev completion item.
+mapping.select_prev_item = function(option)
+  return function(fallback)
+    if not require('cmp').select_prev_item(option) then
+      local release = require('cmp').core:suspend()
+      fallback()
+      vim.schedule(release)
+    end
+  end
+end
+
+---Confirm selection
+mapping.confirm = function(option)
+  return function(fallback)
+    if not require('cmp').confirm(option) then
+      fallback()
+    end
+  end
+end
+
+return mapping

bundle/nvim-cmp/lua/cmp/config/sources.lua

@@ -0,0 +1,10 @@
+return function(...)
+  local sources = {}
+  for i, group in ipairs({ ... }) do
+    for _, source in ipairs(group) do
+      source.group_index = i
+      table.insert(sources, source)
+    end
+  end
+  return sources
+end

bundle/nvim-cmp/lua/cmp/context.lua

@@ -0,0 +1,105 @@
+local misc = require('cmp.utils.misc')
+local pattern = require('cmp.utils.pattern')
+local types = require('cmp.types')
+local cache = require('cmp.utils.cache')
+local api = require('cmp.utils.api')
+
+---@class cmp.Context
+---@field public id string
+---@field public cache cmp.Cache
+---@field public prev_context cmp.Context
+---@field public option cmp.ContextOption
+---@field public filetype string
+---@field public time number
+---@field public bufnr number
+---@field public cursor vim.Position|lsp.Position
+---@field public cursor_line string
+---@field public cursor_after_line string
+---@field public cursor_before_line string
+local context = {}
+
+---Create new empty context
+---@return cmp.Context
+context.empty = function()
+  local ctx = context.new({}) -- dirty hack to prevent recursive call `context.empty`.
+  ctx.bufnr = -1
+  ctx.input = ''
+  ctx.cursor = {}
+  ctx.cursor.row = -1
+  ctx.cursor.col = -1
+  return ctx
+end
+
+---Create new context
+---@param prev_context cmp.Context
+---@param option cmp.ContextOption
+---@return cmp.Context
+context.new = function(prev_context, option)
+  option = option or {}
+
+  local self = setmetatable({}, { __index = context })
+  self.id = misc.id('cmp.context.new')
+  self.cache = cache.new()
+  self.prev_context = prev_context or context.empty()
+  self.option = option or { reason = types.cmp.ContextReason.None }
+  self.filetype = vim.api.nvim_buf_get_option(0, 'filetype')
+  self.time = vim.loop.now()
+  self.bufnr = vim.api.nvim_get_current_buf()
+
+  local cursor = api.get_cursor()
+  self.cursor_line = api.get_current_line()
+  self.cursor = {}
+  self.cursor.row = cursor[1]
+  self.cursor.col = cursor[2] + 1
+  self.cursor.line = self.cursor.row - 1
+  self.cursor.character = misc.to_utfindex(self.cursor_line, self.cursor.col)
+  self.cursor_before_line = string.sub(self.cursor_line, 1, self.cursor.col - 1)
+  self.cursor_after_line = string.sub(self.cursor_line, self.cursor.col)
+  return self
+end
+
+---Return context creation reason.
+---@return cmp.ContextReason
+context.get_reason = function(self)
+  return self.option.reason
+end
+
+---Get keyword pattern offset
+---@return number|nil
+context.get_offset = function(self, keyword_pattern)
+  return self.cache:ensure({ 'get_offset', keyword_pattern, self.cursor_before_line }, function()
+    return pattern.offset(keyword_pattern .. '\\m$', self.cursor_before_line) or self.cursor.col
+  end)
+end
+
+---Return if this context is changed from previous context or not.
+---@return boolean
+context.changed = function(self, ctx)
+  local curr = self
+
+  if curr.bufnr ~= ctx.bufnr then
+    return true
+  end
+  if curr.cursor.row ~= ctx.cursor.row then
+    return true
+  end
+  if curr.cursor.col ~= ctx.cursor.col then
+    return true
+  end
+  if curr:get_reason() == types.cmp.ContextReason.Manual then
+    return true
+  end
+
+  return false
+end
+
+---Shallow clone
+context.clone = function(self)
+  local cloned = {}
+  for k, v in pairs(self) do
+    cloned[k] = v
+  end
+  return cloned
+end
+
+return context

bundle/nvim-cmp/lua/cmp/context_spec.lua

@@ -0,0 +1,31 @@
+local spec = require('cmp.utils.spec')
+
+local context = require('cmp.context')
+
+describe('context', function()
+  before_each(spec.before)
+
+  describe('new', function()
+    it('middle of text', function()
+      vim.fn.setline('1', 'function! s:name() abort')
+      vim.bo.filetype = 'vim'
+      vim.fn.execute('normal! fm')
+      local ctx = context.new()
+      assert.are.equal(ctx.filetype, 'vim')
+      assert.are.equal(ctx.cursor.row, 1)
+      assert.are.equal(ctx.cursor.col, 15)
+      assert.are.equal(ctx.cursor_line, 'function! s:name() abort')
+    end)
+
+    it('tab indent', function()
+      vim.fn.setline('1', '\t\tab')
+      vim.bo.filetype = 'vim'
+      vim.fn.execute('normal! fb')
+      local ctx = context.new()
+      assert.are.equal(ctx.filetype, 'vim')
+      assert.are.equal(ctx.cursor.row, 1)
+      assert.are.equal(ctx.cursor.col, 4)
+      assert.are.equal(ctx.cursor_line, '\t\tab')
+    end)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/core.lua

@@ -0,0 +1,435 @@
+local debug = require('cmp.utils.debug')
+local char = require('cmp.utils.char')
+local pattern = require('cmp.utils.pattern')
+local feedkeys = require('cmp.utils.feedkeys')
+local async = require('cmp.utils.async')
+local keymap = require('cmp.utils.keymap')
+local context = require('cmp.context')
+local source = require('cmp.source')
+local view = require('cmp.view')
+local misc = require('cmp.utils.misc')
+local config = require('cmp.config')
+local types = require('cmp.types')
+local api = require('cmp.utils.api')
+local event = require('cmp.utils.event')
+
+local SOURCE_TIMEOUT = 500
+local THROTTLE_TIME = 120
+local DEBOUNCE_TIME = 20
+
+---@class cmp.Core
+---@field public suspending boolean
+---@field public view cmp.View
+---@field public sources cmp.Source[]
+---@field public sources_by_name table<string, cmp.Source>
+---@field public context cmp.Context
+---@field public event cmp.Event
+local core = {}
+
+core.new = function()
+  local self = setmetatable({}, { __index = core })
+  self.suspending = false
+  self.sources = {}
+  self.sources_by_name = {}
+  self.context = context.new()
+  self.event = event.new()
+  self.view = view.new()
+  self.view.event:on('keymap', function(...)
+    self:on_keymap(...)
+  end)
+  return self
+end
+
+---Register source
+---@param s cmp.Source
+core.register_source = function(self, s)
+  self.sources[s.id] = s
+  if not self.sources_by_name[s.name] then
+    self.sources_by_name[s.name] = {}
+  end
+  table.insert(self.sources_by_name[s.name], s)
+end
+
+---Unregister source
+---@param source_id string
+core.unregister_source = function(self, source_id)
+  local name = self.sources[source_id].name
+  self.sources_by_name[name] = vim.tbl_filter(function(s)
+    return s.id ~= source_id
+  end, self.sources_by_name[name])
+  self.sources[source_id] = nil
+end
+
+---Get new context
+---@param option cmp.ContextOption
+---@return cmp.Context
+core.get_context = function(self, option)
+  local prev = self.context:clone()
+  prev.prev_context = nil
+  local ctx = context.new(prev, option)
+  self:set_context(ctx)
+  return self.context
+end
+
+---Set new context
+---@param ctx cmp.Context
+core.set_context = function(self, ctx)
+  self.context = ctx
+end
+
+---Suspend completion
+core.suspend = function(self)
+  self.suspending = true
+  return function()
+    self.suspending = false
+  end
+end
+
+---Get sources that sorted by priority
+---@param statuses cmp.SourceStatus[]
+---@return cmp.Source[]
+core.get_sources = function(self, statuses)
+  local sources = {}
+  for _, c in pairs(config.get().sources) do
+    for _, s in ipairs(self.sources_by_name[c.name] or {}) do
+      if not statuses or vim.tbl_contains(statuses, s.status) then
+        if s:is_available() then
+          table.insert(sources, s)
+        end
+      end
+    end
+  end
+  return sources
+end
+
+---Keypress handler
+core.on_keymap = function(self, keys, fallback)
+  local mode = api.get_mode()
+  for key, mapping in pairs(config.get().mapping) do
+    if keymap.equals(key, keys) and mapping[mode] then
+      return mapping[mode](fallback)
+    end
+  end
+
+  --Commit character. NOTE: This has a lot of cmp specific implementation to make more user-friendly.
+  local chars = keymap.t(keys)
+  local e = self.view:get_active_entry()
+  if e and vim.tbl_contains(config.get().confirmation.get_commit_characters(e:get_commit_characters()), chars) then
+    local is_printable = char.is_printable(string.byte(chars, 1))
+    self:confirm(e, {
+      behavior = is_printable and 'insert' or 'replace',
+    }, function()
+      local ctx = self:get_context()
+      local word = e:get_word()
+      if string.sub(ctx.cursor_before_line, -#word, ctx.cursor.col - 1) == word and is_printable then
+        fallback()
+      else
+        self:reset()
+      end
+    end)
+    return
+  end
+
+  fallback()
+end
+
+---Prepare completion
+core.prepare = function(self)
+  for keys, mapping in pairs(config.get().mapping) do
+    for mode in pairs(mapping) do
+      keymap.listen(mode, keys, function(...)
+        self:on_keymap(...)
+      end)
+    end
+  end
+end
+
+---Check auto-completion
+core.on_change = function(self, trigger_event)
+  local ignore = false
+  ignore = ignore or self.suspending
+  ignore = ignore or (vim.fn.pumvisible() == 1 and (vim.v.completed_item).word)
+  ignore = ignore or not self.view:ready()
+  if ignore then
+    self:get_context({ reason = types.cmp.ContextReason.Auto })
+    return
+  end
+
+  self:autoindent(trigger_event, function()
+    local ctx = self:get_context({ reason = types.cmp.ContextReason.Auto })
+    debug.log(('ctx: `%s`'):format(ctx.cursor_before_line))
+    if ctx:changed(ctx.prev_context) then
+      self.view:on_change()
+      debug.log('changed')
+
+      if vim.tbl_contains(config.get().completion.autocomplete or {}, trigger_event) then
+        self:complete(ctx)
+      else
+        self.filter.timeout = THROTTLE_TIME
+        self:filter()
+      end
+    else
+      debug.log('unchanged')
+    end
+  end)
+end
+
+---Cursor moved.
+core.on_moved = function(self)
+  local ignore = false
+  ignore = ignore or self.suspending
+  ignore = ignore or (vim.fn.pumvisible() == 1 and (vim.v.completed_item).word)
+  ignore = ignore or not self.view:visible()
+  if ignore then
+    return
+  end
+  self:filter()
+end
+
+---Check autoindent
+---@param trigger_event cmp.TriggerEvent
+---@param callback function
+core.autoindent = function(self, trigger_event, callback)
+  if trigger_event ~= types.cmp.TriggerEvent.TextChanged then
+    return callback()
+  end
+  if not api.is_insert_mode() then
+    return callback()
+  end
+
+  -- Check prefix
+  local cursor_before_line = api.get_cursor_before_line()
+  local prefix = pattern.matchstr('[^[:blank:]]\\+$', cursor_before_line) or ''
+  if #prefix == 0 then
+    return callback()
+  end
+
+  -- Scan indentkeys.
+  for _, key in ipairs(vim.split(vim.bo.indentkeys, ',')) do
+    if vim.tbl_contains({ '=' .. prefix, '0=' .. prefix }, key) then
+      local release = self:suspend()
+      vim.schedule(function() -- Check autoindent already applied.
+        if cursor_before_line == api.get_cursor_before_line() then
+          feedkeys.call(keymap.autoindent(), 'n', function()
+            release()
+            callback()
+          end)
+        else
+          callback()
+        end
+      end)
+      return
+    end
+  end
+
+  -- indentkeys does not matched.
+  callback()
+end
+
+---Invoke completion
+---@param ctx cmp.Context
+core.complete = function(self, ctx)
+  if not api.is_suitable_mode() then
+    return
+  end
+  self:set_context(ctx)
+
+  for _, s in ipairs(self:get_sources({ source.SourceStatus.WAITING, source.SourceStatus.COMPLETED })) do
+    s:complete(
+      ctx,
+      (function(src)
+        local callback
+        callback = function()
+          local new = context.new(ctx)
+          if new:changed(new.prev_context) and ctx == self.context then
+            src:complete(new, callback)
+          else
+            self.filter.stop()
+            self.filter.timeout = DEBOUNCE_TIME
+            self:filter()
+          end
+        end
+        return callback
+      end)(s)
+    )
+  end
+
+  self.filter.timeout = THROTTLE_TIME
+  self:filter()
+end
+
+---Update completion menu
+core.filter = async.throttle(
+  vim.schedule_wrap(function(self)
+    if not api.is_suitable_mode() then
+      return
+    end
+    if self.view:get_active_entry() ~= nil then
+      return
+    end
+    local ctx = self:get_context()
+
+    -- To wait for processing source for that's timeout.
+    local sources = {}
+    for _, s in ipairs(self:get_sources({ source.SourceStatus.FETCHING, source.SourceStatus.COMPLETED })) do
+      local time = SOURCE_TIMEOUT - s:get_fetching_time()
+      if not s.incomplete and time > 0 then
+        if #sources == 0 then
+          self.filter.stop()
+          self.filter.timeout = time + 1
+          self:filter()
+          return
+        end
+        break
+      end
+      table.insert(sources, s)
+    end
+    self.filter.timeout = THROTTLE_TIME
+
+    self.view:open(ctx, sources)
+  end),
+  THROTTLE_TIME
+)
+
+---Confirm completion.
+---@param e cmp.Entry
+---@param option cmp.ConfirmOption
+---@param callback function
+core.confirm = function(self, e, option, callback)
+  if not (e and not e.confirmed) then
+    return callback()
+  end
+  e.confirmed = true
+
+  debug.log('entry.confirm', e:get_completion_item())
+
+  local release = self:suspend()
+
+  -- Close menus.
+  self.view:close()
+
+  feedkeys.call('', 'n', function()
+    local ctx = context.new()
+    local keys = {}
+    table.insert(keys, keymap.backspace(ctx.cursor.character - vim.str_utfindex(ctx.cursor_line, e:get_offset() - 1)))
+    table.insert(keys, e:get_word())
+    table.insert(keys, keymap.undobreak())
+    feedkeys.call(table.concat(keys, ''), 'int')
+  end)
+  feedkeys.call('', 'n', function()
+    local ctx = context.new()
+    if api.is_cmdline_mode() then
+      local keys = {}
+      table.insert(keys, keymap.backspace(ctx.cursor.character - vim.str_utfindex(ctx.cursor_line, e:get_offset() - 1)))
+      table.insert(keys, string.sub(e.context.cursor_before_line, e:get_offset()))
+      feedkeys.call(table.concat(keys, ''), 'int')
+    else
+      vim.api.nvim_buf_set_text(0, ctx.cursor.row - 1, e:get_offset() - 1, ctx.cursor.row - 1, ctx.cursor.col - 1, {
+        string.sub(e.context.cursor_before_line, e:get_offset()),
+      })
+      vim.api.nvim_win_set_cursor(0, { e.context.cursor.row, e.context.cursor.col - 1 })
+    end
+  end)
+  feedkeys.call('', 'n', function()
+    if #(misc.safe(e:get_completion_item().additionalTextEdits) or {}) == 0 then
+      local pre = context.new()
+      e:resolve(function()
+        local new = context.new()
+        local text_edits = misc.safe(e:get_completion_item().additionalTextEdits) or {}
+        if #text_edits == 0 then
+          return
+        end
+
+        local has_cursor_line_text_edit = (function()
+          local minrow = math.min(pre.cursor.row, new.cursor.row)
+          local maxrow = math.max(pre.cursor.row, new.cursor.row)
+          for _, te in ipairs(text_edits) do
+            local srow = te.range.start.line + 1
+            local erow = te.range['end'].line + 1
+            if srow <= minrow and maxrow <= erow then
+              return true
+            end
+          end
+          return false
+        end)()
+        if has_cursor_line_text_edit then
+          return
+        end
+        vim.fn['cmp#apply_text_edits'](new.bufnr, text_edits)
+      end)
+    else
+      vim.fn['cmp#apply_text_edits'](vim.api.nvim_get_current_buf(), e:get_completion_item().additionalTextEdits)
+    end
+  end)
+  feedkeys.call('', 'n', function()
+    local ctx = context.new()
+    local completion_item = misc.copy(e:get_completion_item())
+    if not misc.safe(completion_item.textEdit) then
+      completion_item.textEdit = {}
+      completion_item.textEdit.newText = misc.safe(completion_item.insertText) or completion_item.word or completion_item.label
+    end
+    local behavior = option.behavior or config.get().confirmation.default_behavior
+    if behavior == types.cmp.ConfirmBehavior.Replace then
+      completion_item.textEdit.range = e:get_replace_range()
+    else
+      completion_item.textEdit.range = e:get_insert_range()
+    end
+
+    local diff_before = e.context.cursor.character - completion_item.textEdit.range.start.character
+    local diff_after = completion_item.textEdit.range['end'].character - e.context.cursor.character
+    local new_text = completion_item.textEdit.newText
+
+    if api.is_insert_mode() then
+      local is_snippet = completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet
+      completion_item.textEdit.range.start.line = ctx.cursor.line
+      completion_item.textEdit.range.start.character = ctx.cursor.character - diff_before
+      completion_item.textEdit.range['end'].line = ctx.cursor.line
+      completion_item.textEdit.range['end'].character = ctx.cursor.character + diff_after
+      if is_snippet then
+        completion_item.textEdit.newText = ''
+      end
+      vim.fn['cmp#apply_text_edits'](ctx.bufnr, { completion_item.textEdit })
+      local texts = vim.split(completion_item.textEdit.newText, '\n')
+      local position = completion_item.textEdit.range.start
+      position.line = position.line + (#texts - 1)
+      if #texts == 1 then
+        position.character = position.character + vim.str_utfindex(texts[1])
+      else
+        position.character = vim.str_utfindex(texts[#texts])
+      end
+      local pos = types.lsp.Position.to_vim(0, position)
+      vim.api.nvim_win_set_cursor(0, { pos.row, pos.col - 1 })
+      if is_snippet then
+        config.get().snippet.expand({
+          body = new_text,
+          insert_text_mode = completion_item.insertTextMode,
+        })
+      end
+    else
+      local keys = {}
+      table.insert(keys, string.rep(keymap.t('<BS>'), diff_before))
+      table.insert(keys, string.rep(keymap.t('<Del>'), diff_after))
+      table.insert(keys, new_text)
+      feedkeys.call(table.concat(keys, ''), 'int')
+    end
+  end)
+  feedkeys.call('', 'n', function()
+    e:execute(vim.schedule_wrap(function()
+      release()
+      self.event:emit('confirm_done', e)
+      if callback then
+        callback()
+      end
+    end))
+  end)
+end
+
+---Reset current completion state
+core.reset = function(self)
+  for _, s in pairs(self.sources) do
+    s:reset()
+  end
+  self:get_context() -- To prevent new event
+end
+
+return core

bundle/nvim-cmp/lua/cmp/core_spec.lua

@@ -0,0 +1,158 @@
+local spec = require('cmp.utils.spec')
+local feedkeys = require('cmp.utils.feedkeys')
+local types = require('cmp.types')
+local core = require('cmp.core')
+local source = require('cmp.source')
+local keymap = require('cmp.utils.keymap')
+local api = require('cmp.utils.api')
+
+describe('cmp.core', function()
+  describe('confirm', function()
+    local confirm = function(request, filter, completion_item)
+      local c = core.new()
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({ completion_item })
+        end,
+      })
+      c:register_source(s)
+      feedkeys.call(request, 'n', function()
+        c:complete(c:get_context({ reason = types.cmp.ContextReason.Manual }))
+        vim.wait(5000, function()
+          return #c.sources[s.id].entries > 0
+        end)
+      end)
+      feedkeys.call(filter, 'n', function()
+        c:confirm(c.sources[s.id].entries[1], {})
+      end)
+      local state = {}
+      feedkeys.call('', 'x', function()
+        feedkeys.call('', 'n', function()
+          if api.is_cmdline_mode() then
+            state.buffer = { api.get_current_line() }
+          else
+            state.buffer = vim.api.nvim_buf_get_lines(0, 0, -1, false)
+          end
+          state.cursor = api.get_cursor()
+        end)
+      end)
+      return state
+    end
+
+    describe('insert-mode', function()
+      before_each(spec.before)
+
+      it('label', function()
+        local state = confirm('iA', 'IU', {
+          label = 'AIUEO',
+        })
+        assert.are.same(state.buffer, { 'AIUEO' })
+        assert.are.same(state.cursor, { 1, 5 })
+      end)
+
+      it('insertText', function()
+        local state = confirm('iA', 'IU', {
+          label = 'AIUEO',
+          insertText = '_AIUEO_',
+        })
+        assert.are.same(state.buffer, { '_AIUEO_' })
+        assert.are.same(state.cursor, { 1, 7 })
+      end)
+
+      it('textEdit', function()
+        local state = confirm(keymap.t('i***AEO***<Left><Left><Left><Left><Left>'), 'IU', {
+          label = 'AIUEO',
+          textEdit = {
+            range = {
+              start = {
+                line = 0,
+                character = 3,
+              },
+              ['end'] = {
+                line = 0,
+                character = 6,
+              },
+            },
+            newText = 'foo\nbar\nbaz',
+          },
+        })
+        assert.are.same(state.buffer, { '***foo', 'bar', 'baz***' })
+        assert.are.same(state.cursor, { 3, 3 })
+      end)
+
+      it('insertText & snippet', function()
+        local state = confirm('iA', 'IU', {
+          label = 'AIUEO',
+          insertText = 'AIUEO($0)',
+          insertTextFormat = types.lsp.InsertTextFormat.Snippet,
+        })
+        assert.are.same(state.buffer, { 'AIUEO()' })
+        assert.are.same(state.cursor, { 1, 6 })
+      end)
+
+      it('textEdit & snippet', function()
+        local state = confirm(keymap.t('i***AEO***<Left><Left><Left><Left><Left>'), 'IU', {
+          label = 'AIUEO',
+          insertTextFormat = types.lsp.InsertTextFormat.Snippet,
+          textEdit = {
+            range = {
+              start = {
+                line = 0,
+                character = 3,
+              },
+              ['end'] = {
+                line = 0,
+                character = 6,
+              },
+            },
+            newText = 'foo\nba$0r\nbaz',
+          },
+        })
+        assert.are.same(state.buffer, { '***foo', 'bar', 'baz***' })
+        assert.are.same(state.cursor, { 2, 2 })
+      end)
+    end)
+
+    describe('cmdline-mode', function()
+      before_each(spec.before)
+
+      it('label', function()
+        local state = confirm(':A', 'IU', {
+          label = 'AIUEO',
+        })
+        assert.are.same(state.buffer, { 'AIUEO' })
+        assert.are.same(state.cursor[2], 5)
+      end)
+
+      it('insertText', function()
+        local state = confirm(':A', 'IU', {
+          label = 'AIUEO',
+          insertText = '_AIUEO_',
+        })
+        assert.are.same(state.buffer, { '_AIUEO_' })
+        assert.are.same(state.cursor[2], 7)
+      end)
+
+      it('textEdit', function()
+        local state = confirm(keymap.t(':***AEO***<Left><Left><Left><Left><Left>'), 'IU', {
+          label = 'AIUEO',
+          textEdit = {
+            range = {
+              start = {
+                line = 0,
+                character = 3,
+              },
+              ['end'] = {
+                line = 0,
+                character = 6,
+              },
+            },
+            newText = 'foobarbaz',
+          },
+        })
+        assert.are.same(state.buffer, { '***foobarbaz***' })
+        assert.are.same(state.cursor[2], 12)
+      end)
+    end)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/entry.lua

@@ -0,0 +1,430 @@
+local cache = require('cmp.utils.cache')
+local char = require('cmp.utils.char')
+local misc = require('cmp.utils.misc')
+local str = require('cmp.utils.str')
+local config = require('cmp.config')
+local types = require('cmp.types')
+local matcher = require('cmp.matcher')
+
+---@class cmp.Entry
+---@field public id number
+---@field public cache cmp.Cache
+---@field public match_cache cmp.Cache
+---@field public score number
+---@field public exact boolean
+---@field public matches table
+---@field public context cmp.Context
+---@field public source cmp.Source
+---@field public source_offset number
+---@field public source_insert_range lsp.Range
+---@field public source_replace_range lsp.Range
+---@field public completion_item lsp.CompletionItem
+---@field public resolved_completion_item lsp.CompletionItem|nil
+---@field public resolved_callbacks fun()[]
+---@field public resolving boolean
+---@field public confirmed boolean
+local entry = {}
+
+---Create new entry
+---@param ctx cmp.Context
+---@param source cmp.Source
+---@param completion_item lsp.CompletionItem
+---@return cmp.Entry
+entry.new = function(ctx, source, completion_item)
+  local self = setmetatable({}, { __index = entry })
+  self.id = misc.id('entry.new')
+  self.cache = cache.new()
+  self.match_cache = cache.new()
+  self.score = 0
+  self.exact = false
+  self.matches = {}
+  self.context = ctx
+  self.source = source
+  self.source_offset = source.request_offset
+  self.source_insert_range = source:get_default_insert_range()
+  self.source_replace_range = source:get_default_replace_range()
+  self.completion_item = completion_item
+  self.resolved_completion_item = nil
+  self.resolved_callbacks = {}
+  self.resolving = false
+  self.confirmed = false
+  return self
+end
+
+---Make offset value
+---@return number
+entry.get_offset = function(self)
+  return self.cache:ensure('get_offset', function()
+    local offset = self.source_offset
+    if misc.safe(self.completion_item.textEdit) then
+      local range = misc.safe(self.completion_item.textEdit.insert) or misc.safe(self.completion_item.textEdit.range)
+      if range then
+        local c = misc.to_vimindex(self.context.cursor_line, range.start.character)
+        for idx = c, self.source_offset do
+          if not char.is_white(string.byte(self.context.cursor_line, idx)) then
+            offset = idx
+            break
+          end
+        end
+      end
+    else
+      -- NOTE
+      -- The VSCode does not implement this but it's useful if the server does not care about word patterns.
+      -- We should care about this performance.
+      local word = self:get_word()
+      for idx = self.source_offset - 1, self.source_offset - #word, -1 do
+        if char.is_semantic_index(self.context.cursor_line, idx) then
+          local c = string.byte(self.context.cursor_line, idx)
+          if char.is_white(c) then
+            break
+          end
+          local match = true
+          for i = 1, self.source_offset - idx do
+            local c1 = string.byte(word, i)
+            local c2 = string.byte(self.context.cursor_line, idx + i - 1)
+            if not c1 or not c2 or c1 ~= c2 then
+              match = false
+              break
+            end
+          end
+          if match then
+            offset = math.min(offset, idx)
+          end
+        end
+      end
+    end
+    return offset
+  end)
+end
+
+---Create word for vim.CompletedItem
+---@return string
+entry.get_word = function(self)
+  return self.cache:ensure('get_word', function()
+    --NOTE: This is nvim-cmp specific implementation.
+    if misc.safe(self.completion_item.word) then
+      return self.completion_item.word
+    end
+
+    local word
+    if misc.safe(self.completion_item.textEdit) then
+      word = str.trim(self.completion_item.textEdit.newText)
+      local overwrite = self:get_overwrite()
+      if 0 < overwrite[2] or self.completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet then
+        word = str.get_word(word, string.byte(self.context.cursor_after_line, 1))
+      end
+    elseif misc.safe(self.completion_item.insertText) then
+      word = str.trim(self.completion_item.insertText)
+      if self.completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet then
+        word = str.get_word(word)
+      end
+    else
+      word = str.trim(self.completion_item.label)
+    end
+    return str.oneline(word)
+  end)
+end
+
+---Get overwrite information
+---@return number, number
+entry.get_overwrite = function(self)
+  return self.cache:ensure('get_overwrite', function()
+    if misc.safe(self.completion_item.textEdit) then
+      local r = misc.safe(self.completion_item.textEdit.insert) or misc.safe(self.completion_item.textEdit.range)
+      local s = misc.to_vimindex(self.context.cursor_line, r.start.character)
+      local e = misc.to_vimindex(self.context.cursor_line, r['end'].character)
+      local before = self.context.cursor.col - s
+      local after = e - self.context.cursor.col
+      return { before, after }
+    end
+    return { 0, 0 }
+  end)
+end
+
+---Create filter text
+---@return string
+entry.get_filter_text = function(self)
+  return self.cache:ensure('get_filter_text', function()
+    local word
+    if misc.safe(self.completion_item.filterText) then
+      word = self.completion_item.filterText
+    else
+      word = str.trim(self.completion_item.label)
+    end
+
+    -- @see https://github.com/clangd/clangd/issues/815
+    if misc.safe(self.completion_item.textEdit) then
+      local diff = self.source_offset - self:get_offset()
+      if diff > 0 then
+        if char.is_symbol(string.byte(self.context.cursor_line, self:get_offset())) then
+          local prefix = string.sub(self.context.cursor_line, self:get_offset(), self:get_offset() + diff)
+          if string.find(word, prefix, 1, true) ~= 1 then
+            word = prefix .. word
+          end
+        end
+      end
+    end
+
+    return word
+  end)
+end
+
+---Get LSP's insert text
+---@return string
+entry.get_insert_text = function(self)
+  return self.cache:ensure('get_insert_text', function()
+    local word
+    if misc.safe(self.completion_item.textEdit) then
+      word = str.trim(self.completion_item.textEdit.newText)
+      if self.completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet then
+        word = str.remove_suffix(str.remove_suffix(word, '$0'), '${0}')
+      end
+    elseif misc.safe(self.completion_item.insertText) then
+      word = str.trim(self.completion_item.insertText)
+      if self.completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet then
+        word = str.remove_suffix(str.remove_suffix(word, '$0'), '${0}')
+      end
+    else
+      word = str.trim(self.completion_item.label)
+    end
+    return word
+  end)
+end
+
+---Return the item is deprecated or not.
+---@return boolean
+entry.is_deprecated = function(self)
+  return self.completion_item.deprecated or vim.tbl_contains(self.completion_item.tags or {}, types.lsp.CompletionItemTag.Deprecated)
+end
+
+---Return view information.
+---@return { abbr: { text: string, bytes: number, width: number, hl_group: string }, kind: { text: string, bytes: number, width: number, hl_group: string }, menu: { text: string, bytes: number, width: number, hl_group: string } }
+entry.get_view = function(self, suggest_offset)
+  local item = self:get_vim_item(suggest_offset)
+  return self.cache:ensure({ 'get_view', self.resolved_completion_item and 1 or 0 }, function()
+    local view = {}
+    view.abbr = {}
+    view.abbr.text = item.abbr or ''
+    view.abbr.bytes = #view.abbr.text
+    view.abbr.width = vim.str_utfindex(view.abbr.text)
+    view.abbr.hl_group = self:is_deprecated() and 'CmpItemAbbrDeprecated' or 'CmpItemAbbr'
+    view.kind = {}
+    view.kind.text = item.kind or ''
+    view.kind.bytes = #view.kind.text
+    view.kind.width = vim.str_utfindex(view.kind.text)
+    view.kind.hl_group = 'CmpItemKind'
+    view.menu = {}
+    view.menu.text = item.menu or ''
+    view.menu.bytes = #view.menu.text
+    view.menu.width = vim.str_utfindex(view.menu.text)
+    view.menu.hl_group = 'CmpItemMenu'
+    view.dup = item.dup
+    return view
+  end)
+end
+
+---Make vim.CompletedItem
+---@param suggest_offset number
+---@return vim.CompletedItem
+entry.get_vim_item = function(self, suggest_offset)
+  return self.cache:ensure({ 'get_vim_item', suggest_offset, self.resolved_completion_item and 1 or 0 }, function()
+    local completion_item = self:get_completion_item()
+    local word = self:get_word()
+    local abbr = str.oneline(completion_item.label)
+
+    -- ~ indicator
+    if #(misc.safe(completion_item.additionalTextEdits) or {}) > 0 then
+      abbr = abbr .. '~'
+    elseif completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet then
+      local insert_text = self:get_insert_text()
+      if word ~= insert_text then
+        abbr = abbr .. '~'
+      end
+    end
+
+    -- append delta text
+    if suggest_offset < self:get_offset() then
+      word = string.sub(self.context.cursor_before_line, suggest_offset, self:get_offset() - 1) .. word
+    end
+
+    -- labelDetails.
+    local menu = nil
+    if misc.safe(completion_item.labelDetails) then
+      menu = ''
+      if misc.safe(completion_item.labelDetails.detail) then
+        menu = menu .. completion_item.labelDetails.detail
+      end
+      if misc.safe(completion_item.labelDetails.description) then
+        menu = menu .. completion_item.labelDetails.description
+      end
+    end
+
+    -- remove duplicated string.
+    for i = 1, #word - 1 do
+      if str.has_prefix(self.context.cursor_after_line, string.sub(word, i, #word)) then
+        word = string.sub(word, 1, i - 1)
+        break
+      end
+    end
+
+    local vim_item = {
+      word = word,
+      abbr = abbr,
+      kind = types.lsp.CompletionItemKind[self:get_kind()] or types.lsp.CompletionItemKind[1],
+      menu = menu,
+      dup = self.completion_item.dup or 1,
+    }
+    if config.get().formatting.format then
+      vim_item = config.get().formatting.format(self, vim_item)
+    end
+    vim_item.word = str.oneline(vim_item.word or '')
+    vim_item.abbr = str.oneline(vim_item.abbr or '')
+    vim_item.kind = str.oneline(vim_item.kind or '')
+    vim_item.menu = str.oneline(vim_item.menu or '')
+    vim_item.equal = 1
+    vim_item.empty = 1
+
+    return vim_item
+  end)
+end
+
+---Get commit characters
+---@return string[]
+entry.get_commit_characters = function(self)
+  return misc.safe(self:get_completion_item().commitCharacters) or {}
+end
+
+---Return insert range
+---@return lsp.Range|nil
+entry.get_insert_range = function(self)
+  local insert_range
+  if misc.safe(self.completion_item.textEdit) then
+    if misc.safe(self.completion_item.textEdit.insert) then
+      insert_range = self.completion_item.textEdit.insert
+    else
+      insert_range = self.completion_item.textEdit.range
+    end
+  else
+    insert_range = {
+      start = {
+        line = self.context.cursor.row - 1,
+        character = math.min(misc.to_utfindex(self.context.cursor_line, self:get_offset()), self.source_insert_range.start.character),
+      },
+      ['end'] = self.source_insert_range['end'],
+    }
+  end
+  return insert_range
+end
+
+---Return replace range
+---@return lsp.Range|nil
+entry.get_replace_range = function(self)
+  return self.cache:ensure('get_replace_range', function()
+    local replace_range
+    if misc.safe(self.completion_item.textEdit) then
+      if misc.safe(self.completion_item.textEdit.replace) then
+        replace_range = self.completion_item.textEdit.replace
+      else
+        replace_range = self.completion_item.textEdit.range
+      end
+    else
+      replace_range = {
+        start = {
+          line = self.source_replace_range.start.line,
+          character = math.min(misc.to_utfindex(self.context.cursor_line, self:get_offset()), self.source_replace_range.start.character),
+        },
+        ['end'] = self.source_replace_range['end'],
+      }
+    end
+    return replace_range
+  end)
+end
+
+---Match line.
+---@param input string
+---@return { score: number, matches: table[] }
+entry.match = function(self, input)
+  return self.match_cache:ensure(input, function()
+    local score, matches, _
+    score, matches = matcher.match(input, self:get_filter_text(), { self:get_word(), self:get_completion_item().label })
+    if self:get_filter_text() ~= self:get_completion_item().label then
+      _, matches = matcher.match(input, self:get_completion_item().label, { self:get_word() })
+    end
+    return { score = score, matches = matches }
+  end)
+end
+
+---Get resolved completion item if possible.
+---@return lsp.CompletionItem
+entry.get_completion_item = function(self)
+  return self.cache:ensure({ 'get_completion_item', (self.resolved_completion_item and 1 or 0) }, function()
+    if self.resolved_completion_item then
+      local completion_item = misc.copy(self.completion_item)
+      completion_item.detail = self.resolved_completion_item.detail or completion_item.detail
+      completion_item.documentation = self.resolved_completion_item.documentation or completion_item.documentation
+      completion_item.additionalTextEdits = self.resolved_completion_item.additionalTextEdits or completion_item.additionalTextEdits
+      return completion_item
+    end
+    return self.completion_item
+  end)
+end
+
+---Create documentation
+---@return string
+entry.get_documentation = function(self)
+  local item = self:get_completion_item()
+
+  local documents = {}
+
+  -- detail
+  if misc.safe(item.detail) and item.detail ~= '' then
+    table.insert(documents, {
+      kind = types.lsp.MarkupKind.Markdown,
+      value = ('```%s\n%s\n```'):format(self.context.filetype, str.trim(item.detail)),
+    })
+  end
+
+  if type(item.documentation) == 'string' and item.documentation ~= '' then
+    table.insert(documents, {
+      kind = types.lsp.MarkupKind.PlainText,
+      value = str.trim(item.documentation),
+    })
+  elseif type(item.documentation) == 'table' and item.documentation.value ~= '' then
+    table.insert(documents, item.documentation)
+  end
+
+  return vim.lsp.util.convert_input_to_markdown_lines(documents)
+end
+
+---Get completion item kind
+---@return lsp.CompletionItemKind
+entry.get_kind = function(self)
+  return misc.safe(self.completion_item.kind) or types.lsp.CompletionItemKind.Text
+end
+
+---Execute completion item's command.
+---@param callback fun()
+entry.execute = function(self, callback)
+  self.source:execute(self:get_completion_item(), callback)
+end
+
+---Resolve completion item.
+---@param callback fun()
+entry.resolve = function(self, callback)
+  if self.resolved_completion_item then
+    return callback()
+  end
+  table.insert(self.resolved_callbacks, callback)
+
+  if not self.resolving then
+    self.resolving = true
+    self.source:resolve(self.completion_item, function(completion_item)
+      self.resolved_completion_item = misc.safe(completion_item) or self.completion_item
+      for _, c in ipairs(self.resolved_callbacks) do
+        c()
+      end
+    end)
+  end
+end
+
+return entry

bundle/nvim-cmp/lua/cmp/entry_spec.lua

@@ -0,0 +1,281 @@
+local spec = require('cmp.utils.spec')
+
+local entry = require('cmp.entry')
+
+describe('entry', function()
+  before_each(spec.before)
+
+  it('one char', function()
+    local state = spec.state('@.', 1, 3)
+    state.input('@')
+    local e = entry.new(state.manual(), state.source(), {
+      label = '@',
+    })
+    assert.are.equal(e:get_offset(), 3)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, '@')
+  end)
+
+  it('word length (no fix)', function()
+    local state = spec.state('a.b', 1, 4)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = 'b',
+    })
+    assert.are.equal(e:get_offset(), 5)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, 'b')
+  end)
+
+  it('word length (fix)', function()
+    local state = spec.state('a.b', 1, 4)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = 'b.',
+    })
+    assert.are.equal(e:get_offset(), 3)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, 'b.')
+  end)
+
+  it('semantic index (no fix)', function()
+    local state = spec.state('a.bc', 1, 5)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = 'c.',
+    })
+    assert.are.equal(e:get_offset(), 6)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, 'c.')
+  end)
+
+  it('semantic index (fix)', function()
+    local state = spec.state('a.bc', 1, 5)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = 'bc.',
+    })
+    assert.are.equal(e:get_offset(), 3)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, 'bc.')
+  end)
+
+  it('[vscode-html-language-server] 1', function()
+    local state = spec.state('    </>', 1, 7)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = '/div',
+      textEdit = {
+        range = {
+          start = {
+            line = 0,
+            character = 0,
+          },
+          ['end'] = {
+            line = 0,
+            character = 6,
+          },
+        },
+        newText = '  </div',
+      },
+    })
+    assert.are.equal(e:get_offset(), 5)
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, '</div')
+  end)
+
+  it('[clangd] 1', function()
+    --NOTE: clangd does not return `.foo` as filterText but we should care about it.
+    --nvim-cmp does care it by special handling in entry.lua.
+    local state = spec.state('foo', 1, 4)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      insertText = '->foo',
+      label = ' foo',
+      textEdit = {
+        newText = '->foo',
+        range = {
+          start = {
+            character = 3,
+            line = 1,
+          },
+          ['end'] = {
+            character = 4,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(4).word, '->foo')
+    assert.are.equal(e:get_filter_text(), '.foo')
+  end)
+
+  it('[typescript-language-server] 1', function()
+    local state = spec.state('Promise.resolve()', 1, 18)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      label = 'catch',
+    })
+    -- The offset will be 18 in this situation because the server returns `[Symbol]` as candidate.
+    assert.are.equal(e:get_vim_item(18).word, '.catch')
+    assert.are.equal(e:get_filter_text(), 'catch')
+  end)
+
+  it('[typescript-language-server] 2', function()
+    local state = spec.state('Promise.resolve()', 1, 18)
+    state.input('.')
+    local e = entry.new(state.manual(), state.source(), {
+      filterText = '.Symbol',
+      label = 'Symbol',
+      textEdit = {
+        newText = '[Symbol]',
+        range = {
+          ['end'] = {
+            character = 18,
+            line = 0,
+          },
+          start = {
+            character = 17,
+            line = 0,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(18).word, '[Symbol]')
+    assert.are.equal(e:get_filter_text(), '.Symbol')
+  end)
+
+  it('[lua-language-server] 1', function()
+    local state = spec.state("local m = require'cmp.confi", 1, 28)
+    local e
+
+    -- press g
+    state.input('g')
+    e = entry.new(state.manual(), state.source(), {
+      insertTextFormat = 2,
+      label = 'cmp.config',
+      textEdit = {
+        newText = 'cmp.config',
+        range = {
+          ['end'] = {
+            character = 27,
+            line = 1,
+          },
+          start = {
+            character = 18,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(19).word, 'cmp.config')
+    assert.are.equal(e:get_filter_text(), 'cmp.config')
+
+    -- press '
+    state.input("'")
+    e = entry.new(state.manual(), state.source(), {
+      insertTextFormat = 2,
+      label = 'cmp.config',
+      textEdit = {
+        newText = 'cmp.config',
+        range = {
+          ['end'] = {
+            character = 27,
+            line = 1,
+          },
+          start = {
+            character = 18,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(19).word, 'cmp.config')
+    assert.are.equal(e:get_filter_text(), 'cmp.config')
+  end)
+
+  it('[lua-language-server] 2', function()
+    local state = spec.state("local m = require'cmp.confi", 1, 28)
+    local e
+
+    -- press g
+    state.input('g')
+    e = entry.new(state.manual(), state.source(), {
+      insertTextFormat = 2,
+      label = 'lua.cmp.config',
+      textEdit = {
+        newText = 'lua.cmp.config',
+        range = {
+          ['end'] = {
+            character = 27,
+            line = 1,
+          },
+          start = {
+            character = 18,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(19).word, 'lua.cmp.config')
+    assert.are.equal(e:get_filter_text(), 'lua.cmp.config')
+
+    -- press '
+    state.input("'")
+    e = entry.new(state.manual(), state.source(), {
+      insertTextFormat = 2,
+      label = 'lua.cmp.config',
+      textEdit = {
+        newText = 'lua.cmp.config',
+        range = {
+          ['end'] = {
+            character = 27,
+            line = 1,
+          },
+          start = {
+            character = 18,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(19).word, 'lua.cmp.config')
+    assert.are.equal(e:get_filter_text(), 'lua.cmp.config')
+  end)
+
+  it('[intelephense] 1', function()
+    local state = spec.state('\t\t', 1, 4)
+
+    -- press g
+    state.input('$')
+    local e = entry.new(state.manual(), state.source(), {
+      kind = 6,
+      label = '$this',
+      sortText = '$this',
+      textEdit = {
+        newText = '$this',
+        range = {
+          ['end'] = {
+            character = 3,
+            line = 1,
+          },
+          start = {
+            character = 2,
+            line = 1,
+          },
+        },
+      },
+    })
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, '$this')
+    assert.are.equal(e:get_filter_text(), '$this')
+  end)
+
+  it('[#47] word should not contain \\n character', function()
+    local state = spec.state('', 1, 1)
+
+    -- press g
+    state.input('_')
+    local e = entry.new(state.manual(), state.source(), {
+      kind = 6,
+      label = '__init__',
+      insertTextFormat = 1,
+      insertText = '__init__(self) -> None:\n  pass',
+    })
+    assert.are.equal(e:get_vim_item(e:get_offset()).word, '__init__(self) -> None:')
+    assert.are.equal(e:get_filter_text(), '__init__')
+  end)
+end)

bundle/nvim-cmp/lua/cmp/init.lua

@@ -0,0 +1,312 @@
+local core = require('cmp.core')
+local source = require('cmp.source')
+local config = require('cmp.config')
+local feedkeys = require('cmp.utils.feedkeys')
+local autocmd = require('cmp.utils.autocmd')
+local keymap = require('cmp.utils.keymap')
+local misc = require('cmp.utils.misc')
+
+local cmp = {}
+
+cmp.core = core.new()
+
+---Expose types
+for k, v in pairs(require('cmp.types.cmp')) do
+  cmp[k] = v
+end
+cmp.lsp = require('cmp.types.lsp')
+cmp.vim = require('cmp.types.vim')
+
+---Export default config presets.
+cmp.config = {}
+cmp.config.disable = misc.none
+cmp.config.compare = require('cmp.config.compare')
+cmp.config.sources = require('cmp.config.sources')
+
+---Expose event
+cmp.event = cmp.core.event
+
+---Export mapping
+cmp.mapping = require('cmp.config.mapping')
+
+---Register completion sources
+---@param name string
+---@param s cmp.Source
+---@return number
+cmp.register_source = function(name, s)
+  local src = source.new(name, s)
+  cmp.core:register_source(src)
+  return src.id
+end
+
+---Unregister completion source
+---@param id number
+cmp.unregister_source = function(id)
+  cmp.core:unregister_source(id)
+end
+
+---Get current configuration.
+---@return cmp.ConfigSchema
+cmp.get_config = function()
+  return require('cmp.config').get()
+end
+
+---Invoke completion manually
+cmp.complete = function()
+  cmp.core:complete(cmp.core:get_context({ reason = cmp.ContextReason.Manual }))
+  return true
+end
+
+---Return view is visible or not.
+cmp.visible = function()
+  return cmp.core.view:visible() or vim.fn.pumvisible() == 1
+end
+
+---Get current selected entry or nil
+cmp.get_selected_entry = function()
+  return cmp.core.view:get_selected_entry()
+end
+
+---Get current active entry or nil
+cmp.get_active_entry = function()
+  return cmp.core.view:get_active_entry()
+end
+
+---Close current completion
+cmp.close = function()
+  if cmp.core.view:visible() then
+    local release = cmp.core:suspend()
+    cmp.core.view:close()
+    cmp.core:reset()
+    vim.schedule(release)
+    return true
+  else
+    return false
+  end
+end
+
+---Abort current completion
+cmp.abort = function()
+  if cmp.core.view:visible() then
+    local release = cmp.core:suspend()
+    cmp.core.view:abort()
+    vim.schedule(release)
+    return true
+  else
+    return false
+  end
+end
+
+---Suspend completion.
+cmp.suspend = function()
+  return cmp.core:suspend()
+end
+
+---Select next item if possible
+cmp.select_next_item = function(option)
+  option = option or {}
+
+  -- Hack: Ignore when executing macro.
+  if vim.fn.reg_executing() ~= '' then
+    return true
+  end
+
+  if cmp.core.view:visible() then
+    local release = cmp.core:suspend()
+    cmp.core.view:select_next_item(option)
+    vim.schedule(release)
+    return true
+  elseif vim.fn.pumvisible() == 1 then
+    if (option.behavior or cmp.SelectBehavior.Insert) == cmp.SelectBehavior.Insert then
+      feedkeys.call(keymap.t('<C-n>'), 'n')
+    else
+      feedkeys.call(keymap.t('<Down>'), 'n')
+    end
+    return true
+  end
+  return false
+end
+
+---Select prev item if possible
+cmp.select_prev_item = function(option)
+  option = option or {}
+
+  -- Hack: Ignore when executing macro.
+  if vim.fn.reg_executing() ~= '' then
+    return true
+  end
+
+  if cmp.core.view:visible() then
+    local release = cmp.core:suspend()
+    cmp.core.view:select_prev_item(option)
+    vim.schedule(release)
+    return true
+  elseif vim.fn.pumvisible() == 1 then
+    if (option.behavior or cmp.SelectBehavior.Insert) == cmp.SelectBehavior.Insert then
+      feedkeys.call(keymap.t('<C-p>'), 'n')
+    else
+      feedkeys.call(keymap.t('<Up>'), 'n')
+    end
+    return true
+  end
+  return false
+end
+
+---Scrolling documentation window if possible
+cmp.scroll_docs = function(delta)
+  if cmp.core.view:visible() then
+    cmp.core.view:scroll_docs(delta)
+    return true
+  else
+    return false
+  end
+end
+
+---Confirm completion
+cmp.confirm = function(option, callback)
+  option = option or {}
+  callback = callback or function() end
+
+  -- Hack: Ignore when executing macro.
+  if vim.fn.reg_executing() ~= '' then
+    return true
+  end
+
+  local e = cmp.core.view:get_selected_entry() or (option.select and cmp.core.view:get_first_entry() or nil)
+  if e then
+    cmp.core:confirm(e, {
+      behavior = option.behavior,
+    }, function()
+      callback()
+      cmp.core:complete(cmp.core:get_context({ reason = cmp.ContextReason.TriggerOnly }))
+    end)
+    return true
+  else
+    if vim.fn.complete_info({ 'selected' }).selected ~= -1 then
+      feedkeys.call(keymap.t('<C-y>'), 'n')
+      return true
+    end
+    return false
+  end
+end
+
+---Show status
+cmp.status = function()
+  local kinds = {}
+  kinds.available = {}
+  kinds.unavailable = {}
+  kinds.installed = {}
+  kinds.invalid = {}
+  local names = {}
+  for _, s in pairs(cmp.core.sources) do
+    names[s.name] = true
+
+    if config.get_source_config(s.name) then
+      if s:is_available() then
+        table.insert(kinds.available, s:get_debug_name())
+      else
+        table.insert(kinds.unavailable, s:get_debug_name())
+      end
+    else
+      table.insert(kinds.installed, s:get_debug_name())
+    end
+  end
+  for _, s in ipairs(config.get().sources) do
+    if not names[s.name] then
+      table.insert(kinds.invalid, s.name)
+    end
+  end
+
+  if #kinds.available > 0 then
+    vim.api.nvim_echo({ { '\n', 'Normal' } }, false, {})
+    vim.api.nvim_echo({ { '# ready source names\n', 'Special' } }, false, {})
+    for _, name in ipairs(kinds.available) do
+      vim.api.nvim_echo({ { ('- %s\n'):format(name), 'Normal' } }, false, {})
+    end
+  end
+
+  if #kinds.unavailable > 0 then
+    vim.api.nvim_echo({ { '\n', 'Normal' } }, false, {})
+    vim.api.nvim_echo({ { '# unavailable source names\n', 'Comment' } }, false, {})
+    for _, name in ipairs(kinds.unavailable) do
+      vim.api.nvim_echo({ { ('- %s\n'):format(name), 'Normal' } }, false, {})
+    end
+  end
+
+  if #kinds.installed > 0 then
+    vim.api.nvim_echo({ { '\n', 'Normal' } }, false, {})
+    vim.api.nvim_echo({ { '# unused source names\n', 'WarningMsg' } }, false, {})
+    for _, name in ipairs(kinds.installed) do
+      vim.api.nvim_echo({ { ('- %s\n'):format(name), 'Normal' } }, false, {})
+    end
+  end
+
+  if #kinds.invalid > 0 then
+    vim.api.nvim_echo({ { '\n', 'Normal' } }, false, {})
+    vim.api.nvim_echo({ { '# unknown source names\n', 'ErrorMsg' } }, false, {})
+    for _, name in ipairs(kinds.invalid) do
+      vim.api.nvim_echo({ { ('- %s\n'):format(name), 'Normal' } }, false, {})
+    end
+  end
+end
+
+---@type cmp.Setup
+cmp.setup = setmetatable({
+  global = function(c)
+    config.set_global(c)
+  end,
+  buffer = function(c)
+    config.set_buffer(c, vim.api.nvim_get_current_buf())
+  end,
+  cmdline = function(type, c)
+    config.set_cmdline(c, type)
+  end,
+}, {
+  __call = function(self, c)
+    self.global(c)
+  end,
+})
+
+autocmd.subscribe('InsertEnter', function()
+  feedkeys.call('', 'i', function()
+    if config.enabled() then
+      cmp.core:prepare()
+      cmp.core:on_change('InsertEnter')
+    end
+  end)
+end)
+
+autocmd.subscribe('InsertLeave', function()
+  cmp.core:reset()
+  cmp.core.view:close()
+end)
+
+autocmd.subscribe('CmdlineEnter', function()
+  if config.enabled() then
+    cmp.core:prepare()
+    cmp.core:on_change('InsertEnter')
+  end
+end)
+
+autocmd.subscribe('CmdlineLeave', function()
+  cmp.core:reset()
+  cmp.core.view:close()
+end)
+
+autocmd.subscribe('TextChanged', function()
+  if config.enabled() then
+    cmp.core:on_change('TextChanged')
+  end
+end)
+
+autocmd.subscribe('CursorMoved', function()
+  if config.enabled() then
+    cmp.core:on_moved()
+  end
+end)
+
+cmp.event:on('confirm_done', function(e)
+  cmp.config.compare.recently_used:add_entry(e)
+end)
+
+return cmp

bundle/nvim-cmp/lua/cmp/matcher.lua

@@ -0,0 +1,292 @@
+local char = require('cmp.utils.char')
+
+local matcher = {}
+
+matcher.WORD_BOUNDALY_ORDER_FACTOR = 10
+
+matcher.PREFIX_FACTOR = 8
+matcher.NOT_FUZZY_FACTOR = 6
+
+---@type function
+matcher.debug = function(...)
+  return ...
+end
+
+--- score
+--
+-- ### The score
+--
+--   The `score` is `matched char count` generally.
+--
+--   But cmp will fix the score with some of the below points so the actual score is not `matched char count`.
+--
+--   1. Word boundary order
+--
+--     cmp prefers the match that near by word-beggining.
+--
+--   2. Strict case
+--
+--     cmp prefers strict match than ignorecase match.
+--
+--
+-- ### Matching specs.
+--
+--   1. Prefix matching per word boundary
+--
+--     `bora`         -> `border-radius` # imaginary score: 4
+--      ^^~~              ^^     ~~
+--
+--   2. Try sequential match first
+--
+--     `woroff`       -> `word_offset`   # imaginary score: 6
+--      ^^^~~~            ^^^  ~~~
+--
+--     * The `woroff`'s second `o` should not match `word_offset`'s first `o`
+--
+--   3. Prefer early word boundary
+--
+--     `call`         -> `call`          # imaginary score: 4.1
+--      ^^^^              ^^^^
+--     `call`         -> `condition_all` # imaginary score: 4
+--      ^~~~              ^         ~~~
+--
+--   4. Prefer strict match
+--
+--     `Buffer`       -> `Buffer`        # imaginary score: 6.1
+--      ^^^^^^            ^^^^^^
+--     `buffer`       -> `Buffer`        # imaginary score: 6
+--      ^^^^^^            ^^^^^^
+--
+--   5. Use remaining characters for substring match
+--
+--     `fmodify`        -> `fnamemodify`   # imaginary score: 1
+--      ^~~~~~~             ^    ~~~~~~
+--
+--   6. Avoid unexpected match detection
+--
+--     `candlesingle` -> candle#accept#single
+--      ^^^^^^~~~~~~     ^^^^^^        ~~~~~~
+--
+--      * The `accept`'s `a` should not match to `candle`'s `a`
+--
+---Match entry
+---@param input string
+---@param word string
+---@param words string[]
+---@return number
+matcher.match = function(input, word, words)
+  -- Empty input
+  if #input == 0 then
+    return matcher.PREFIX_FACTOR + matcher.NOT_FUZZY_FACTOR, {}
+  end
+
+  -- Ignore if input is long than word
+  if #input > #word then
+    return 0, {}
+  end
+
+  --- Gather matched regions
+  local matches = {}
+  local input_start_index = 1
+  local input_end_index = 1
+  local word_index = 1
+  local word_bound_index = 1
+  while input_end_index <= #input and word_index <= #word do
+    local m = matcher.find_match_region(input, input_start_index, input_end_index, word, word_index)
+    if m and input_end_index <= m.input_match_end then
+      m.index = word_bound_index
+      input_start_index = m.input_match_start + 1
+      input_end_index = m.input_match_end + 1
+      word_index = char.get_next_semantic_index(word, m.word_match_end)
+      table.insert(matches, m)
+    else
+      word_index = char.get_next_semantic_index(word, word_index)
+    end
+    word_bound_index = word_bound_index + 1
+  end
+
+  if #matches == 0 then
+    return 0, {}
+  end
+
+  matcher.debug(word, matches)
+
+  -- Add prefix bonus
+  local prefix = false
+  if matches[1].input_match_start == 1 and matches[1].word_match_start == 1 then
+    prefix = true
+  else
+    for _, w in ipairs(words or {}) do
+      prefix = true
+      local o = 1
+      for i = matches[1].input_match_start, matches[1].input_match_end do
+        if not char.match(string.byte(w, o), string.byte(input, i)) then
+          prefix = false
+          break
+        end
+        o = o + 1
+      end
+      if prefix then
+        break
+      end
+    end
+  end
+
+  -- Compute prefix match score
+  local score = prefix and matcher.PREFIX_FACTOR or 0
+  local offset = prefix and matches[1].index - 1 or 0
+  local idx = 1
+  for _, m in ipairs(matches) do
+    local s = 0
+    for i = math.max(idx, m.input_match_start), m.input_match_end do
+      s = s + 1
+      idx = i
+    end
+    idx = idx + 1
+    if s > 0 then
+      s = s * (1 + m.strict_ratio)
+      s = s * (1 + math.max(0, matcher.WORD_BOUNDALY_ORDER_FACTOR - (m.index - offset)) / matcher.WORD_BOUNDALY_ORDER_FACTOR)
+      score = score + s
+    end
+  end
+
+  -- Check remaining input as fuzzy
+  if matches[#matches].input_match_end < #input then
+    if prefix and matcher.fuzzy(input, word, matches) then
+      return score, matches
+    end
+    return 0, {}
+  end
+
+  return score + matcher.NOT_FUZZY_FACTOR, matches
+end
+
+--- fuzzy
+matcher.fuzzy = function(input, word, matches)
+  local last_match = matches[#matches]
+
+  -- Lately specified middle of text.
+  local input_index = last_match.input_match_end + 1
+  for i = 1, #matches - 1 do
+    local curr_match = matches[i]
+    local next_match = matches[i + 1]
+    local word_offset = 0
+    local word_index = char.get_next_semantic_index(word, curr_match.word_match_end)
+    while word_offset + word_index < next_match.word_match_start and input_index <= #input do
+      if char.match(string.byte(word, word_index + word_offset), string.byte(input, input_index)) then
+        input_index = input_index + 1
+        word_offset = word_offset + 1
+      else
+        word_index = char.get_next_semantic_index(word, word_index + word_offset)
+        word_offset = 0
+      end
+    end
+  end
+
+  -- Remaining text fuzzy match.
+  local last_input_index = input_index
+  local matched = false
+  local word_offset = 0
+  local word_index = last_match.word_match_end + 1
+  local input_match_start = -1
+  local input_match_end = -1
+  local word_match_start = -1
+  local strict_count = 0
+  local match_count = 0
+  while word_offset + word_index <= #word and input_index <= #input do
+    local c1, c2 = string.byte(word, word_index + word_offset), string.byte(input, input_index)
+    if char.match(c1, c2) then
+      if not matched then
+        input_match_start = input_index
+        word_match_start = word_index + word_offset
+      end
+      matched = true
+      input_index = input_index + 1
+      strict_count = strict_count + (c1 == c2 and 1 or 0)
+      match_count = match_count + 1
+    elseif matched then
+      input_index = last_input_index
+      input_match_end = input_index - 1
+    end
+    word_offset = word_offset + 1
+  end
+  if input_index > #input then
+    table.insert(matches, {
+      input_match_start = input_match_start,
+      input_match_end = input_match_end,
+      word_match_start = word_match_start,
+      word_match_end = word_index + word_offset - 1,
+      strict_ratio = strict_count / match_count,
+      fuzzy = true,
+    })
+    return true
+  end
+  return false
+end
+
+--- find_match_region
+matcher.find_match_region = function(input, input_start_index, input_end_index, word, word_index)
+  -- determine input position ( woroff -> word_offset )
+  while input_start_index < input_end_index do
+    if char.match(string.byte(input, input_end_index), string.byte(word, word_index)) then
+      break
+    end
+    input_end_index = input_end_index - 1
+  end
+
+  -- Can't determine input position
+  if input_end_index < input_start_index then
+    return nil
+  end
+
+  local input_match_start = -1
+  local input_index = input_end_index
+  local word_offset = 0
+  local strict_count = 0
+  local match_count = 0
+  while input_index <= #input and word_index + word_offset <= #word do
+    local c1 = string.byte(input, input_index)
+    local c2 = string.byte(word, word_index + word_offset)
+    if char.match(c1, c2) then
+      -- Match start.
+      if input_match_start == -1 then
+        input_match_start = input_index
+      end
+
+      strict_count = strict_count + (c1 == c2 and 1 or 0)
+      match_count = match_count + 1
+      word_offset = word_offset + 1
+    else
+      -- Match end (partial region)
+      if input_match_start ~= -1 then
+        return {
+          input_match_start = input_match_start,
+          input_match_end = input_index - 1,
+          word_match_start = word_index,
+          word_match_end = word_index + word_offset - 1,
+          strict_ratio = strict_count / match_count,
+          fuzzy = false,
+        }
+      else
+        return nil
+      end
+    end
+    input_index = input_index + 1
+  end
+
+  -- Match end (whole region)
+  if input_match_start ~= -1 then
+    return {
+      input_match_start = input_match_start,
+      input_match_end = input_index - 1,
+      word_match_start = word_index,
+      word_match_end = word_index + word_offset - 1,
+      strict_ratio = strict_count / match_count,
+      fuzzy = false,
+    }
+  end
+
+  return nil
+end
+
+return matcher

bundle/nvim-cmp/lua/cmp/matcher_spec.lua

@@ -0,0 +1,44 @@
+local spec = require('cmp.utils.spec')
+
+local matcher = require('cmp.matcher')
+
+describe('matcher', function()
+  before_each(spec.before)
+
+  it('match', function()
+    assert.is.truthy(matcher.match('', 'a') >= 1)
+    assert.is.truthy(matcher.match('a', 'a') >= 1)
+    assert.is.truthy(matcher.match('ab', 'a') == 0)
+    assert.is.truthy(matcher.match('ab', 'ab') > matcher.match('ab', 'a_b'))
+    assert.is.truthy(matcher.match('ab', 'a_b_c') > matcher.match('ac', 'a_b_c'))
+
+    assert.is.truthy(matcher.match('bora', 'border-radius') >= 1)
+    assert.is.truthy(matcher.match('woroff', 'word_offset') >= 1)
+    assert.is.truthy(matcher.match('call', 'call') > matcher.match('call', 'condition_all'))
+    assert.is.truthy(matcher.match('Buffer', 'Buffer') > matcher.match('Buffer', 'buffer'))
+    assert.is.truthy(matcher.match('fmodify', 'fnamemodify') >= 1)
+    assert.is.truthy(matcher.match('candlesingle', 'candle#accept#single') >= 1)
+    assert.is.truthy(matcher.match('conso', 'console') > matcher.match('conso', 'ConstantSourceNode'))
+    assert.is.truthy(matcher.match('var_', 'var_dump') >= 1)
+    assert.is.truthy(matcher.match('my_', 'my_awesome_variable') > matcher.match('my_', 'completion_matching_strategy_list'))
+    assert.is.truthy(matcher.match('luacon', 'lua_context') > matcher.match('luacon', 'LuaContext'))
+    assert.is.truthy(matcher.match('call', 'calc') == 0)
+
+    assert.is.truthy(matcher.match('vi', 'void#') >= 1)
+    assert.is.truthy(matcher.match('vo', 'void#') >= 1)
+    assert.is.truthy(matcher.match('usela', 'useLayoutEffect') > matcher.match('usela', 'useDataLayer'))
+    assert.is.truthy(matcher.match('true', 'v:true', { 'true' }) == matcher.match('true', 'true'))
+    assert.is.truthy(matcher.match('g', 'get', { 'get' }) > matcher.match('g', 'dein#get', { 'dein#get' }))
+    assert.is.truthy(matcher.match('2', '[[2021') >= 1)
+  end)
+
+  it('debug', function()
+    matcher.debug = function(...)
+      print(vim.inspect({ ... }))
+    end
+    -- print(vim.inspect({
+    --   a = matcher.match('true', 'v:true', { 'true' }),
+    --   b = matcher.match('true', 'true'),
+    -- }))
+  end)
+end)

bundle/nvim-cmp/lua/cmp/source.lua

@@ -0,0 +1,368 @@
+local context = require('cmp.context')
+local config = require('cmp.config')
+local entry = require('cmp.entry')
+local debug = require('cmp.utils.debug')
+local misc = require('cmp.utils.misc')
+local cache = require('cmp.utils.cache')
+local types = require('cmp.types')
+local async = require('cmp.utils.async')
+local pattern = require('cmp.utils.pattern')
+local char = require('cmp.utils.char')
+
+---@class cmp.Source
+---@field public id number
+---@field public name string
+---@field public source any
+---@field public cache cmp.Cache
+---@field public revision number
+---@field public context cmp.Context
+---@field public incomplete boolean
+---@field public is_triggered_by_symbol boolean
+---@field public entries cmp.Entry[]
+---@field public offset number
+---@field public request_offset number
+---@field public status cmp.SourceStatus
+---@field public complete_dedup function
+local source = {}
+
+---@alias cmp.SourceStatus "1" | "2" | "3"
+source.SourceStatus = {}
+source.SourceStatus.WAITING = 1
+source.SourceStatus.FETCHING = 2
+source.SourceStatus.COMPLETED = 3
+
+---@return cmp.Source
+source.new = function(name, s)
+  local self = setmetatable({}, { __index = source })
+  self.id = misc.id('cmp.source.new')
+  self.name = name
+  self.source = s
+  self.cache = cache.new()
+  self.complete_dedup = async.dedup()
+  self.revision = 0
+  self:reset()
+  return self
+end
+
+---Reset current completion state
+---@return boolean
+source.reset = function(self)
+  self.cache:clear()
+  self.revision = self.revision + 1
+  self.context = context.empty()
+  self.request_offset = -1
+  self.is_triggered_by_symbol = false
+  self.incomplete = false
+  self.entries = {}
+  self.offset = -1
+  self.status = source.SourceStatus.WAITING
+  self.complete_dedup(function() end)
+end
+
+---Return source option
+---@return cmp.SourceConfig
+source.get_config = function(self)
+  return config.get_source_config(self.name) or {}
+end
+
+---Get fetching time
+source.get_fetching_time = function(self)
+  if self.status == source.SourceStatus.FETCHING then
+    return vim.loop.now() - self.context.time
+  end
+  return 100 * 1000 -- return pseudo time if source isn't fetching.
+end
+
+---Return filtered entries
+---@param ctx cmp.Context
+---@return cmp.Entry[]
+source.get_entries = function(self, ctx)
+  if self.offset == -1 then
+    return {}
+  end
+
+  local target_entries = (function()
+    local key = { 'get_entries', self.revision }
+    for i = ctx.cursor.col, self.offset, -1 do
+      key[3] = string.sub(ctx.cursor_before_line, 1, i)
+      local prev_entries = self.cache:get(key)
+      if prev_entries then
+        return prev_entries
+      end
+    end
+    return self.entries
+  end)()
+
+  local inputs = {}
+  local entries = {}
+  for _, e in ipairs(target_entries) do
+    local o = e:get_offset()
+    if not inputs[o] then
+      inputs[o] = string.sub(ctx.cursor_before_line, o)
+    end
+
+    local match = e:match(inputs[o])
+    e.score = match.score
+    e.exact = false
+    if e.score >= 1 then
+      e.matches = match.matches
+      e.exact = e:get_filter_text() == inputs[o] or e:get_word() == inputs[o]
+      table.insert(entries, e)
+    end
+  end
+  self.cache:set({ 'get_entries', self.revision, ctx.cursor_before_line }, entries)
+
+  local max_item_count = self:get_config().max_item_count or 200
+  local limited_entries = {}
+  for _, e in ipairs(entries) do
+    table.insert(limited_entries, e)
+    if max_item_count and #limited_entries >= max_item_count then
+      break
+    end
+  end
+  return limited_entries
+end
+
+---Get default insert range
+---@return lsp.Range|nil
+source.get_default_insert_range = function(self)
+  if not self.context then
+    return nil
+  end
+
+  return self.cache:ensure({ 'get_default_insert_range', self.revision }, function()
+    return {
+      start = {
+        line = self.context.cursor.row - 1,
+        character = misc.to_utfindex(self.context.cursor_line, self.offset),
+      },
+      ['end'] = {
+        line = self.context.cursor.row - 1,
+        character = misc.to_utfindex(self.context.cursor_line, self.context.cursor.col),
+      },
+    }
+  end)
+end
+
+---Get default replace range
+---@return lsp.Range|nil
+source.get_default_replace_range = function(self)
+  if not self.context then
+    return nil
+  end
+
+  return self.cache:ensure({ 'get_default_replace_range', self.revision }, function()
+    local _, e = pattern.offset('^' .. '\\%(' .. self:get_keyword_pattern() .. '\\)', string.sub(self.context.cursor_line, self.offset))
+    return {
+      start = {
+        line = self.context.cursor.row - 1,
+        character = misc.to_utfindex(self.context.cursor_line, self.offset),
+      },
+      ['end'] = {
+        line = self.context.cursor.row - 1,
+        character = misc.to_utfindex(self.context.cursor_line, e and self.offset + e - 1 or self.context.cursor.col),
+      },
+    }
+  end)
+end
+
+---Return source name.
+source.get_debug_name = function(self)
+  local name = self.name
+  if self.source.get_debug_name then
+    name = self.source:get_debug_name()
+  end
+  return name
+end
+
+---Return the source is available or not.
+source.is_available = function(self)
+  if self.source.is_available then
+    return self.source:is_available()
+  end
+  return true
+end
+
+---Get keyword_pattern
+---@return string
+source.get_keyword_pattern = function(self)
+  local c = self:get_config()
+  if c.keyword_pattern then
+    return c.keyword_pattern
+  end
+  if self.source.get_keyword_pattern then
+    return self.source:get_keyword_pattern({
+      option = self:get_config().opts,
+    })
+  end
+  return config.get().completion.keyword_pattern
+end
+
+---Get keyword_length
+---@return number
+source.get_keyword_length = function(self)
+  local c = self:get_config()
+  if c.keyword_length then
+    return c.keyword_length
+  end
+  return config.get().completion.keyword_length or 1
+end
+
+---Get trigger_characters
+---@return string[]
+source.get_trigger_characters = function(self)
+  local trigger_characters = {}
+  if self.source.get_trigger_characters then
+    trigger_characters = self.source:get_trigger_characters({
+      option = self:get_config().opts,
+    }) or {}
+  end
+  if config.get().completion.get_trigger_characters then
+    return config.get().completion.get_trigger_characters(trigger_characters)
+  end
+  return trigger_characters
+end
+
+---Invoke completion
+---@param ctx cmp.Context
+---@param callback function
+---@return boolean Return true if not trigger completion.
+source.complete = function(self, ctx, callback)
+  local offset = ctx:get_offset(self:get_keyword_pattern())
+  if ctx.cursor.col <= offset then
+    self:reset()
+  end
+
+  local before_char = string.sub(ctx.cursor_before_line, -1)
+  local before_char_iw = string.match(ctx.cursor_before_line, '(.)%s*$') or before_char
+
+  if ctx:get_reason() == types.cmp.ContextReason.TriggerOnly then
+    if string.match(before_char, '^%a+$') then
+      before_char = ''
+    end
+    if string.match(before_char_iw, '^%a+$') then
+      before_char_iw = ''
+    end
+  end
+
+  local completion_context
+  if ctx:get_reason() == types.cmp.ContextReason.Manual then
+    completion_context = {
+      triggerKind = types.lsp.CompletionTriggerKind.Invoked,
+    }
+  else
+    if vim.tbl_contains(self:get_trigger_characters(), before_char) then
+      completion_context = {
+        triggerKind = types.lsp.CompletionTriggerKind.TriggerCharacter,
+        triggerCharacter = before_char,
+      }
+    elseif vim.tbl_contains(self:get_trigger_characters(), before_char_iw) then
+      completion_context = {
+        triggerKind = types.lsp.CompletionTriggerKind.TriggerCharacter,
+        triggerCharacter = before_char_iw,
+      }
+    elseif ctx:get_reason() ~= types.cmp.ContextReason.TriggerOnly then
+      if self:get_keyword_length() <= (ctx.cursor.col - offset) then
+        if self.incomplete and self.context.cursor.col ~= ctx.cursor.col then
+          completion_context = {
+            triggerKind = types.lsp.CompletionTriggerKind.TriggerForIncompleteCompletions,
+          }
+        elseif not vim.tbl_contains({ self.request_offset, self.offset }, offset) then
+          completion_context = {
+            triggerKind = types.lsp.CompletionTriggerKind.Invoked,
+          }
+        end
+      end
+    else
+      self:reset()
+    end
+  end
+
+  if not completion_context then
+    if ctx:get_reason() == types.cmp.ContextReason.TriggerOnly then
+      self:reset()
+    end
+    debug.log(self:get_debug_name(), 'skip completion')
+    return
+  end
+
+  if completion_context.triggerKind == types.lsp.CompletionTriggerKind.TriggerCharacter then
+    self.is_triggered_by_symbol = char.is_symbol(string.byte(completion_context.triggerCharacter))
+  end
+
+  debug.log(self:get_debug_name(), 'request', offset, vim.inspect(completion_context))
+  local prev_status = self.status
+  self.status = source.SourceStatus.FETCHING
+  self.request_offset = offset
+  self.offset = offset
+  self.context = ctx
+  self.source:complete(
+    {
+      context = ctx,
+      offset = self.offset,
+      option = self:get_config().opts,
+      completion_context = completion_context,
+    },
+    self.complete_dedup(vim.schedule_wrap(function(response)
+      response = response or {}
+
+      self.incomplete = response.isIncomplete or false
+
+      if #(response.items or response) > 0 then
+        debug.log(self:get_debug_name(), 'retrieve', #(response.items or response))
+        local old_offset = self.offset
+        local old_entries = self.entries
+
+        self.status = source.SourceStatus.COMPLETED
+        self.entries = {}
+        for i, item in ipairs(response.items or response) do
+          if (misc.safe(item) or {}).label then
+            local e = entry.new(ctx, self, item)
+            self.entries[i] = e
+            self.offset = math.min(self.offset, e:get_offset())
+          end
+        end
+        self.revision = self.revision + 1
+        if #self:get_entries(ctx) == 0 then
+          self.offset = old_offset
+          self.entries = old_entries
+          self.revision = self.revision + 1
+        end
+      else
+        debug.log(self:get_debug_name(), 'continue', 'nil')
+        if completion_context.triggerKind == types.lsp.CompletionTriggerKind.TriggerCharacter then
+          self:reset()
+        end
+        self.status = prev_status
+      end
+      callback()
+    end))
+  )
+  return true
+end
+
+---Resolve CompletionItem
+---@param item lsp.CompletionItem
+---@param callback fun(item: lsp.CompletionItem)
+source.resolve = function(self, item, callback)
+  if not self.source.resolve then
+    return callback(item)
+  end
+  self.source:resolve(item, function(resolved_item)
+    callback(resolved_item or item)
+  end)
+end
+
+---Execute command
+---@param item lsp.CompletionItem
+---@param callback fun()
+source.execute = function(self, item, callback)
+  if not self.source.execute then
+    return callback()
+  end
+  self.source:execute(item, function()
+    callback()
+  end)
+end
+
+return source

bundle/nvim-cmp/lua/cmp/source_spec.lua

@@ -0,0 +1,109 @@
+local config = require('cmp.config')
+local spec = require('cmp.utils.spec')
+
+local source = require('cmp.source')
+
+describe('source', function()
+  before_each(spec.before)
+
+  describe('keyword length', function()
+    it('not enough', function()
+      config.set_buffer({
+        completion = {
+          keyword_length = 3,
+        },
+      }, vim.api.nvim_get_current_buf())
+
+      local state = spec.state('', 1, 1)
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({ { label = 'spec' } })
+        end,
+      })
+      assert.is.truthy(not s:complete(state.input('a'), function() end))
+    end)
+
+    it('enough', function()
+      config.set_buffer({
+        completion = {
+          keyword_length = 3,
+        },
+      }, vim.api.nvim_get_current_buf())
+
+      local state = spec.state('', 1, 1)
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({ { label = 'spec' } })
+        end,
+      })
+      assert.is.truthy(s:complete(state.input('aiu'), function() end))
+    end)
+
+    it('enough -> not enough', function()
+      config.set_buffer({
+        completion = {
+          keyword_length = 3,
+        },
+      }, vim.api.nvim_get_current_buf())
+
+      local state = spec.state('', 1, 1)
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({ { label = 'spec' } })
+        end,
+      })
+      assert.is.truthy(s:complete(state.input('aiu'), function() end))
+      assert.is.truthy(not s:complete(state.backspace(), function() end))
+    end)
+
+    it('continue', function()
+      config.set_buffer({
+        completion = {
+          keyword_length = 3,
+        },
+      }, vim.api.nvim_get_current_buf())
+
+      local state = spec.state('', 1, 1)
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({ { label = 'spec' } })
+        end,
+      })
+      assert.is.truthy(s:complete(state.input('aiu'), function() end))
+      assert.is.truthy(not s:complete(state.input('eo'), function() end))
+    end)
+  end)
+
+  describe('isIncomplete', function()
+    it('isIncomplete=true', function()
+      local state = spec.state('', 1, 1)
+      local s = source.new('spec', {
+        complete = function(_, _, callback)
+          callback({
+            items = { { label = 'spec' } },
+            isIncomplete = true,
+          })
+        end,
+      })
+      vim.wait(100, function()
+        return s.status == source.SourceStatus.COMPLETED
+      end, 100, false)
+      assert.is.truthy(s:complete(state.input('s'), function() end))
+      vim.wait(100, function()
+        return s.status == source.SourceStatus.COMPLETED
+      end, 100, false)
+      assert.is.truthy(s:complete(state.input('p'), function() end))
+      vim.wait(100, function()
+        return s.status == source.SourceStatus.COMPLETED
+      end, 100, false)
+      assert.is.truthy(s:complete(state.input('e'), function() end))
+      vim.wait(100, function()
+        return s.status == source.SourceStatus.COMPLETED
+      end, 100, false)
+      assert.is.truthy(s:complete(state.input('c'), function() end))
+      vim.wait(100, function()
+        return s.status == source.SourceStatus.COMPLETED
+      end, 100, false)
+    end)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/types/cmp.lua

@@ -0,0 +1,128 @@
+local cmp = {}
+
+---@alias cmp.ConfirmBehavior "'insert'" | "'replace'"
+cmp.ConfirmBehavior = {}
+cmp.ConfirmBehavior.Insert = 'insert'
+cmp.ConfirmBehavior.Replace = 'replace'
+
+---@alias cmp.SelectBehavior "'insert'" | "'select'"
+cmp.SelectBehavior = {}
+cmp.SelectBehavior.Insert = 'insert'
+cmp.SelectBehavior.Select = 'select'
+
+---@alias cmp.ContextReason "'auto'" | "'manual'" | "'none'"
+cmp.ContextReason = {}
+cmp.ContextReason.Auto = 'auto'
+cmp.ContextReason.Manual = 'manual'
+cmp.ContextReason.TriggerOnly = 'triggerOnly'
+cmp.ContextReason.None = 'none'
+
+---@alias cmp.TriggerEvent "'InsertEnter'" | "'TextChanged'"
+cmp.TriggerEvent = {}
+cmp.TriggerEvent.InsertEnter = 'InsertEnter'
+cmp.TriggerEvent.TextChanged = 'TextChanged'
+
+---@alias cmp.PreselectMode "'item'" | "'None'"
+cmp.PreselectMode = {}
+cmp.PreselectMode.Item = 'item'
+cmp.PreselectMode.None = 'none'
+
+---@alias cmp.ItemField "'abbr'" | "'kind'" | "'menu'"
+cmp.ItemField = {}
+cmp.ItemField.Abbr = 'abbr'
+cmp.ItemField.Kind = 'kind'
+cmp.ItemField.Menu = 'menu'
+
+---@class cmp.ContextOption
+---@field public reason cmp.ContextReason|nil
+
+---@class cmp.ConfirmOption
+---@field public behavior cmp.ConfirmBehavior
+
+---@class cmp.SelectOption
+---@field public behavior cmp.SelectBehavior
+
+---@class cmp.SnippetExpansionParams
+---@field public body string
+---@field public insert_text_mode number
+
+---@class cmp.Setup
+---@field public __call fun(c: cmp.ConfigSchema)
+---@field public buffer fun(c: cmp.ConfigSchema)
+---@field public global fun(c: cmp.ConfigSchema)
+---@field public cmdline fun(type: string, c: cmp.ConfigSchema)
+
+---@class cmp.SourceBaseApiParams
+---@field public option table
+
+---@class cmp.SourceCompletionApiParams : cmp.SourceBaseApiParams
+---@field public context cmp.Context
+---@field public offset number
+---@field public completion_context lsp.CompletionContext
+
+---@class cmp.Mapping
+---@field public i nil|function(fallback: function): void
+---@field public c nil|function(fallback: function): void
+---@field public x nil|function(fallback: function): void
+---@field public s nil|function(fallback: function): void
+
+---@class cmp.ConfigSchema
+---@field private revision number
+---@field public enabled fun():boolean|boolean
+---@field public preselect cmp.PreselectMode
+---@field public completion cmp.CompletionConfig
+---@field public documentation cmp.DocumentationConfig|"false"
+---@field public confirmation cmp.ConfirmationConfig
+---@field public sorting cmp.SortingConfig
+---@field public formatting cmp.FormattingConfig
+---@field public snippet cmp.SnippetConfig
+---@field public mapping table<string, cmp.Mapping>
+---@field public sources cmp.SourceConfig[]
+---@field public experimental cmp.ExperimentalConfig
+
+---@class cmp.CompletionConfig
+---@field public autocomplete cmp.TriggerEvent[]
+---@field public completeopt string
+---@field public keyword_pattern string
+---@field public keyword_length number
+---@field public get_trigger_characters fun(trigger_characters: string[]): string[]
+
+---@class cmp.DocumentationConfig
+---@field public border string[]
+---@field public winhighlight string
+---@field public maxwidth number|nil
+---@field public maxheight number|nil
+---@field public zindex number|nil
+
+---@class cmp.ConfirmationConfig
+---@field public default_behavior cmp.ConfirmBehavior
+---@field public get_commit_characters fun(commit_characters: string[]): string[]
+
+---@class cmp.SortingConfig
+---@field public priority_weight number
+---@field public comparators function[]
+
+---@class cmp.FormattingConfig
+---@field public fields cmp.ItemField[]
+---@field public format fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem
+
+---@class cmp.SnippetConfig
+---@field public expand fun(args: cmp.SnippetExpansionParams)
+
+---@class cmp.ExperimentalConfig
+---@field public native_menu boolean
+---@field public ghost_text cmp.GhostTextConfig|"false"
+
+---@class cmp.GhostTextConfig
+---@field hl_group string
+
+---@class cmp.SourceConfig
+---@field public name string
+---@field public opts table
+---@field public priority number|nil
+---@field public keyword_pattern string
+---@field public keyword_length number
+---@field public max_item_count number
+---@field public group_index number
+
+return cmp

bundle/nvim-cmp/lua/cmp/types/init.lua

@@ -0,0 +1,7 @@
+local types = {}
+
+types.cmp = require('cmp.types.cmp')
+types.lsp = require('cmp.types.lsp')
+types.vim = require('cmp.types.vim')
+
+return types

bundle/nvim-cmp/lua/cmp/types/lsp.lua

@@ -0,0 +1,197 @@
+local misc = require('cmp.utils.misc')
+---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/
+---@class lsp
+local lsp = {}
+
+lsp.Position = {}
+
+---Convert lsp.Position to vim.Position
+---@param buf number|string
+---@param position lsp.Position
+---@return vim.Position
+lsp.Position.to_vim = function(buf, position)
+  if not vim.api.nvim_buf_is_loaded(buf) then
+    vim.fn.bufload(buf)
+  end
+  local lines = vim.api.nvim_buf_get_lines(buf, position.line, position.line + 1, false)
+  if #lines > 0 then
+    return {
+      row = position.line + 1,
+      col = misc.to_vimindex(lines[1], position.character),
+    }
+  end
+  return {
+    row = position.line + 1,
+    col = position.character + 1,
+  }
+end
+
+---Convert lsp.Position to vim.Position
+---@param buf number|string
+---@param position vim.Position
+---@return lsp.Position
+lsp.Position.to_lsp = function(buf, position)
+  if not vim.api.nvim_buf_is_loaded(buf) then
+    vim.fn.bufload(buf)
+  end
+  local lines = vim.api.nvim_buf_get_lines(buf, position.row - 1, position.row, false)
+  if #lines > 0 then
+    return {
+      line = position.row - 1,
+      character = misc.to_utfindex(lines[1], position.col),
+    }
+  end
+  return {
+    line = position.row - 1,
+    character = position.col - 1,
+  }
+end
+
+lsp.Range = {}
+
+---Convert lsp.Position to vim.Position
+---@param buf number|string
+---@param range lsp.Range
+---@return vim.Range
+lsp.Range.to_vim = function(buf, range)
+  return {
+    start = lsp.Position.to_vim(buf, range.start),
+    ['end'] = lsp.Position.to_vim(buf, range['end']),
+  }
+end
+
+---Convert lsp.Position to vim.Position
+---@param buf number|string
+---@param range vim.Range
+---@return lsp.Range
+lsp.Range.to_lsp = function(buf, range)
+  return {
+    start = lsp.Position.to_lsp(buf, range.start),
+    ['end'] = lsp.Position.to_lsp(buf, range['end']),
+  }
+end
+
+---@alias lsp.CompletionTriggerKind "1" | "2" | "3"
+lsp.CompletionTriggerKind = {}
+lsp.CompletionTriggerKind.Invoked = 1
+lsp.CompletionTriggerKind.TriggerCharacter = 2
+lsp.CompletionTriggerKind.TriggerForIncompleteCompletions = 3
+
+---@class lsp.CompletionContext
+---@field public triggerKind lsp.CompletionTriggerKind
+---@field public triggerCharacter string|nil
+
+---@alias lsp.InsertTextFormat "1" | "2"
+lsp.InsertTextFormat = {}
+lsp.InsertTextFormat.PlainText = 1
+lsp.InsertTextFormat.Snippet = 2
+lsp.InsertTextFormat = vim.tbl_add_reverse_lookup(lsp.InsertTextFormat)
+
+---@alias lsp.InsertTextMode "1" | "2"
+lsp.InsertTextMode = {}
+lsp.InsertTextMode.AsIs = 0
+lsp.InsertTextMode.AdjustIndentation = 1
+lsp.InsertTextMode = vim.tbl_add_reverse_lookup(lsp.InsertTextMode)
+
+---@alias lsp.MarkupKind "'plaintext'" | "'markdown'"
+lsp.MarkupKind = {}
+lsp.MarkupKind.PlainText = 'plaintext'
+lsp.MarkupKind.Markdown = 'markdown'
+lsp.MarkupKind.Markdown = 'markdown'
+lsp.MarkupKind = vim.tbl_add_reverse_lookup(lsp.MarkupKind)
+
+---@alias lsp.CompletionItemTag "1"
+lsp.CompletionItemTag = {}
+lsp.CompletionItemTag.Deprecated = 1
+lsp.CompletionItemTag = vim.tbl_add_reverse_lookup(lsp.CompletionItemTag)
+
+---@alias lsp.CompletionItemKind "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "10" | "11" | "12" | "13" | "14" | "15" | "16" | "17" | "18" | "19" | "20" | "21" | "22" | "23" | "24" | "25"
+lsp.CompletionItemKind = {}
+lsp.CompletionItemKind.Text = 1
+lsp.CompletionItemKind.Method = 2
+lsp.CompletionItemKind.Function = 3
+lsp.CompletionItemKind.Constructor = 4
+lsp.CompletionItemKind.Field = 5
+lsp.CompletionItemKind.Variable = 6
+lsp.CompletionItemKind.Class = 7
+lsp.CompletionItemKind.Interface = 8
+lsp.CompletionItemKind.Module = 9
+lsp.CompletionItemKind.Property = 10
+lsp.CompletionItemKind.Unit = 11
+lsp.CompletionItemKind.Value = 12
+lsp.CompletionItemKind.Enum = 13
+lsp.CompletionItemKind.Keyword = 14
+lsp.CompletionItemKind.Snippet = 15
+lsp.CompletionItemKind.Color = 16
+lsp.CompletionItemKind.File = 17
+lsp.CompletionItemKind.Reference = 18
+lsp.CompletionItemKind.Folder = 19
+lsp.CompletionItemKind.EnumMember = 20
+lsp.CompletionItemKind.Constant = 21
+lsp.CompletionItemKind.Struct = 22
+lsp.CompletionItemKind.Event = 23
+lsp.CompletionItemKind.Operator = 24
+lsp.CompletionItemKind.TypeParameter = 25
+lsp.CompletionItemKind = vim.tbl_add_reverse_lookup(lsp.CompletionItemKind)
+
+---@class lsp.CompletionList
+---@field public isIncomplete boolean
+---@field public items lsp.CompletionItem[]
+
+---@alias lsp.CompletionResponse lsp.CompletionList|lsp.CompletionItem[]|nil
+
+---@class lsp.MarkupContent
+---@field public kind lsp.MarkupKind
+---@field public value string
+
+---@class lsp.Position
+---@field public line number
+---@field public character number
+
+---@class lsp.Range
+---@field public start lsp.Position
+---@field public end lsp.Position
+
+---@class lsp.Command
+---@field public title string
+---@field public command string
+---@field public arguments any[]|nil
+
+---@class lsp.TextEdit
+---@field public range lsp.Range|nil
+---@field public newText string
+
+---@class lsp.InsertReplaceTextEdit
+---@field public insert lsp.Range|nil
+---@field public replace lsp.Range|nil
+---@field public newText string
+
+---@class lsp.CompletionItemLabelDetails
+---@field public detail string|nil
+---@field public description string|nil
+
+---@class lsp.CompletionItem
+---@field public label string
+---@field public labelDetails lsp.CompletionItemLabelDetails|nil
+---@field public kind lsp.CompletionItemKind|nil
+---@field public tags lsp.CompletionItemTag[]|nil
+---@field public detail string|nil
+---@field public documentation lsp.MarkupContent|string|nil
+---@field public deprecated boolean|nil
+---@field public preselect boolean|nil
+---@field public sortText string|nil
+---@field public filterText string|nil
+---@field public insertText string|nil
+---@field public insertTextFormat lsp.InsertTextFormat
+---@field public insertTextMode lsp.InsertTextMode
+---@field public textEdit lsp.TextEdit|lsp.InsertReplaceTextEdit|nil
+---@field public additionalTextEdits lsp.TextEdit[]
+---@field public commitCharacters string[]|nil
+---@field public command lsp.Command|nil
+---@field public data any|nil
+---
+---TODO: Should send the issue for upstream?
+---@field public word string|nil
+---@field public dup boolean|nil
+
+return lsp

bundle/nvim-cmp/lua/cmp/types/lsp_spec.lua

@@ -0,0 +1,46 @@
+local spec = require('cmp.utils.spec')
+local lsp = require('cmp.types.lsp')
+
+describe('types.lsp', function()
+  before_each(spec.before)
+  describe('Position', function()
+    vim.fn.setline('1', {
+      'あいうえお',
+      'かきくけこ',
+      'さしすせそ',
+    })
+    local vim_position, lsp_position
+
+    vim_position = lsp.Position.to_vim('%', { line = 1, character = 3 })
+    assert.are.equal(vim_position.row, 2)
+    assert.are.equal(vim_position.col, 10)
+    lsp_position = lsp.Position.to_lsp('%', vim_position)
+    assert.are.equal(lsp_position.line, 1)
+    assert.are.equal(lsp_position.character, 3)
+
+    vim_position = lsp.Position.to_vim('%', { line = 1, character = 0 })
+    assert.are.equal(vim_position.row, 2)
+    assert.are.equal(vim_position.col, 1)
+    lsp_position = lsp.Position.to_lsp('%', vim_position)
+    assert.are.equal(lsp_position.line, 1)
+    assert.are.equal(lsp_position.character, 0)
+
+    vim_position = lsp.Position.to_vim('%', { line = 1, character = 5 })
+    assert.are.equal(vim_position.row, 2)
+    assert.are.equal(vim_position.col, 16)
+    lsp_position = lsp.Position.to_lsp('%', vim_position)
+    assert.are.equal(lsp_position.line, 1)
+    assert.are.equal(lsp_position.character, 5)
+
+    -- overflow (lsp -> vim)
+    vim_position = lsp.Position.to_vim('%', { line = 1, character = 6 })
+    assert.are.equal(vim_position.row, 2)
+    assert.are.equal(vim_position.col, 16)
+
+    -- overflow(vim -> lsp)
+    vim_position.col = vim_position.col + 1
+    lsp_position = lsp.Position.to_lsp('%', vim_position)
+    assert.are.equal(lsp_position.line, 1)
+    assert.are.equal(lsp_position.character, 5)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/types/vim.lua

@@ -0,0 +1,17 @@
+---@class vim.CompletedItem
+---@field public word string
+---@field public abbr string|nil
+---@field public kind string|nil
+---@field public menu string|nil
+---@field public equal "1"|nil
+---@field public empty "1"|nil
+---@field public dup "1"|nil
+---@field public id any
+
+---@class vim.Position
+---@field public row number
+---@field public col number
+
+---@class vim.Range
+---@field public start vim.Position
+---@field public end vim.Position

bundle/nvim-cmp/lua/cmp/utils/api.lua

@@ -0,0 +1,68 @@
+local api = {}
+
+local CTRL_V = vim.api.nvim_replace_termcodes('<C-v>', true, true, true)
+local CTRL_S = vim.api.nvim_replace_termcodes('<C-s>', true, true, true)
+
+api.get_mode = function()
+  local mode = vim.api.nvim_get_mode().mode:sub(1, 1)
+  if mode == 'i' then
+    return 'i' -- insert
+  elseif mode == 'v' or mode == 'V' or mode == CTRL_V then
+    return 'x' -- visual
+  elseif mode == 's' or mode == 'S' or mode == CTRL_S then
+    return 's' -- select
+  elseif mode == 'c' and vim.fn.getcmdtype() ~= '=' then
+    return 'c' -- cmdline
+  end
+end
+
+api.is_insert_mode = function()
+  return api.get_mode() == 'i'
+end
+
+api.is_cmdline_mode = function()
+  return api.get_mode() == 'c'
+end
+
+api.is_select_mode = function()
+  return api.get_mode() == 's'
+end
+
+api.is_visual_mode = function()
+  return api.get_mode() == 'x'
+end
+
+api.is_suitable_mode = function()
+  local mode = api.get_mode()
+  return mode == 'i' or mode == 'c'
+end
+
+api.get_current_line = function()
+  if api.is_cmdline_mode() then
+    return vim.fn.getcmdline()
+  end
+  return vim.api.nvim_get_current_line()
+end
+
+api.get_cursor = function()
+  if api.is_cmdline_mode() then
+    return { vim.o.lines - (vim.api.nvim_get_option('cmdheight') or 1) + 1, vim.fn.getcmdpos() - 1 }
+  end
+  return vim.api.nvim_win_get_cursor(0)
+end
+
+api.get_screen_cursor = function()
+  if api.is_cmdline_mode() then
+    return api.get_cursor()
+  end
+  local cursor = api.get_cursor()
+  local pos = vim.fn.screenpos(0, cursor[1], cursor[2] + 1)
+  return { pos.row, pos.col - 1 }
+end
+
+api.get_cursor_before_line = function()
+  local cursor = api.get_cursor()
+  return string.sub(api.get_current_line(), 1, cursor[2])
+end
+
+return api

bundle/nvim-cmp/lua/cmp/utils/api_spec.lua

@@ -0,0 +1,46 @@
+local spec = require('cmp.utils.spec')
+local keymap = require('cmp.utils.keymap')
+local feedkeys = require('cmp.utils.feedkeys')
+local api = require('cmp.utils.api')
+
+describe('api', function()
+  describe('get_cursor', function()
+    before_each(spec.before)
+    it('insert-mode', function()
+      local cursor
+      feedkeys.call(keymap.t('i\t1234567890'), 'nx', function()
+        cursor = api.get_cursor()
+      end)
+      assert.are.equal(cursor[2], 11)
+    end)
+    it('cmdline-mode', function()
+      local cursor
+      keymap.set_map(0, 'c', '<Plug>(cmp-spec-spy)', function()
+        cursor = api.get_cursor()
+      end, { expr = true, noremap = true })
+      feedkeys.call(keymap.t(':\t1234567890'), 'n')
+      feedkeys.call(keymap.t('<Plug>(cmp-spec-spy)'), 'x')
+      assert.are.equal(cursor[2], 11)
+    end)
+  end)
+
+  describe('get_cursor_before_line', function()
+    before_each(spec.before)
+    it('insert-mode', function()
+      local cursor_before_line
+      feedkeys.call(keymap.t('i\t1234567890<Left><Left>'), 'nx', function()
+        cursor_before_line = api.get_cursor_before_line()
+      end)
+      assert.are.same(cursor_before_line, '\t12345678')
+    end)
+    it('cmdline-mode', function()
+      local cursor_before_line
+      keymap.set_map(0, 'c', '<Plug>(cmp-spec-spy)', function()
+        cursor_before_line = api.get_cursor_before_line()
+      end, { expr = true, noremap = true })
+      feedkeys.call(keymap.t(':\t1234567890<Left><Left>'), 'n')
+      feedkeys.call(keymap.t('<Plug>(cmp-spec-spy)'), 'x')
+      assert.are.same(cursor_before_line, '\t12345678')
+    end)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/async.lua

@@ -0,0 +1,101 @@
+local async = {}
+
+---@class cmp.AsyncThrottle
+---@field public timeout number
+---@field public stop function
+---@field public __call function
+
+---@param fn function
+---@param timeout number
+---@return cmp.AsyncThrottle
+async.throttle = function(fn, timeout)
+  local time = nil
+  local timer = vim.loop.new_timer()
+  return setmetatable({
+    timeout = timeout,
+    stop = function()
+      time = nil
+      timer:stop()
+    end,
+  }, {
+    __call = function(self, ...)
+      local args = { ... }
+
+      if time == nil then
+        time = vim.loop.now()
+      end
+      timer:stop()
+
+      local delta = math.max(1, self.timeout - (vim.loop.now() - time))
+      timer:start(delta, 0, function()
+        time = nil
+        fn(unpack(args))
+      end)
+    end,
+  })
+end
+
+---Control async tasks.
+async.step = function(...)
+  local tasks = { ... }
+  local next
+  next = function(...)
+    if #tasks > 0 then
+      table.remove(tasks, 1)(next, ...)
+    end
+  end
+  table.remove(tasks, 1)(next)
+end
+
+---Timeout callback function
+---@param fn function
+---@param timeout number
+---@return function
+async.timeout = function(fn, timeout)
+  local timer
+  local done = false
+  local callback = function(...)
+    if not done then
+      done = true
+      timer:stop()
+      timer:close()
+      fn(...)
+    end
+  end
+  timer = vim.loop.new_timer()
+  timer:start(timeout, 0, function()
+    callback()
+  end)
+  return callback
+end
+
+---@alias cmp.AsyncDedup fun(callback: function): function
+
+---Create deduplicated callback
+---@return function
+async.dedup = function()
+  local id = 0
+  return function(callback)
+    id = id + 1
+
+    local current = id
+    return function(...)
+      if current == id then
+        callback(...)
+      end
+    end
+  end
+end
+
+---Convert async process as sync
+async.sync = function(runner, timeout)
+  local done = false
+  runner(function()
+    done = true
+  end)
+  vim.wait(timeout, function()
+    return done
+  end, 10, false)
+end
+
+return async

bundle/nvim-cmp/lua/cmp/utils/async_spec.lua

@@ -0,0 +1,69 @@
+local async = require('cmp.utils.async')
+
+describe('utils.async', function()
+  it('throttle', function()
+    local count = 0
+    local now
+    local f = async.throttle(function()
+      count = count + 1
+    end, 100)
+
+    -- 1. delay for 100ms
+    now = vim.loop.now()
+    f.timeout = 100
+    f()
+    vim.wait(1000, function()
+      return count == 1
+    end)
+    assert.is.truthy(math.abs(f.timeout - (vim.loop.now() - now)) < 10)
+
+    -- 2. delay for 500ms
+    now = vim.loop.now()
+    f.timeout = 500
+    f()
+    vim.wait(1000, function()
+      return count == 2
+    end)
+    assert.is.truthy(math.abs(f.timeout - (vim.loop.now() - now)) < 10)
+
+    -- 4. delay for 500ms and wait 100ms (remain 400ms)
+    f.timeout = 500
+    f()
+    vim.wait(100) -- remain 400ms
+
+    -- 5. call immediately (100ms already elapsed from No.4)
+    now = vim.loop.now()
+    f.timeout = 100
+    f()
+    vim.wait(1000, function()
+      return count == 3
+    end)
+    assert.is.truthy(math.abs(vim.loop.now() - now) < 10)
+  end)
+  it('step', function()
+    local done = false
+    local step = {}
+    async.step(function(next)
+      vim.defer_fn(function()
+        table.insert(step, 1)
+        next()
+      end, 10)
+    end, function(next)
+      vim.defer_fn(function()
+        table.insert(step, 2)
+        next()
+      end, 10)
+    end, function(next)
+      vim.defer_fn(function()
+        table.insert(step, 3)
+        next()
+      end, 10)
+    end, function()
+      done = true
+    end)
+    vim.wait(1000, function()
+      return done
+    end)
+    assert.are.same(step, { 1, 2, 3 })
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/autocmd.lua

@@ -0,0 +1,35 @@
+local debug = require('cmp.utils.debug')
+
+local autocmd = {}
+
+autocmd.events = {}
+
+---Subscribe autocmd
+---@param event string
+---@param callback function
+---@return function
+autocmd.subscribe = function(event, callback)
+  autocmd.events[event] = autocmd.events[event] or {}
+  table.insert(autocmd.events[event], callback)
+  return function()
+    for i, callback_ in ipairs(autocmd.events[event]) do
+      if callback_ == callback then
+        table.remove(autocmd.events[event], i)
+        break
+      end
+    end
+  end
+end
+
+---Emit autocmd
+---@param event string
+autocmd.emit = function(event)
+  debug.log(' ')
+  debug.log(string.format('>>> %s', event))
+  autocmd.events[event] = autocmd.events[event] or {}
+  for _, callback in ipairs(autocmd.events[event]) do
+    callback()
+  end
+end
+
+return autocmd

bundle/nvim-cmp/lua/cmp/utils/binary.lua

@@ -0,0 +1,33 @@
+local binary = {}
+
+---Insert item to list to ordered index
+---@param list any[]
+---@param item any
+---@param func fun(a: any, b: any): "1"|"-1"|"0"
+binary.insort = function(list, item, func)
+  table.insert(list, binary.search(list, item, func), item)
+end
+
+---Search suitable index from list
+---@param list any[]
+---@param item any
+---@param func fun(a: any, b: any): "1"|"-1"|"0"
+---@return number
+binary.search = function(list, item, func)
+  local s = 1
+  local e = #list
+  while s <= e do
+    local idx = math.floor((e + s) / 2)
+    local diff = func(item, list[idx])
+    if diff > 0 then
+      s = idx + 1
+    elseif diff < 0 then
+      e = idx - 1
+    else
+      return idx + 1
+    end
+  end
+  return s
+end
+
+return binary

bundle/nvim-cmp/lua/cmp/utils/binary_spec.lua

@@ -0,0 +1,28 @@
+local binary = require('cmp.utils.binary')
+
+describe('utils.binary', function()
+  it('insort', function()
+    local func = function(a, b)
+      return a.score - b.score
+    end
+    local list = {}
+    binary.insort(list, { id = 'a', score = 1 }, func)
+    binary.insort(list, { id = 'b', score = 5 }, func)
+    binary.insort(list, { id = 'c', score = 2.5 }, func)
+    binary.insort(list, { id = 'd', score = 2 }, func)
+    binary.insort(list, { id = 'e', score = 8 }, func)
+    binary.insort(list, { id = 'g', score = 8 }, func)
+    binary.insort(list, { id = 'h', score = 7 }, func)
+    binary.insort(list, { id = 'i', score = 6 }, func)
+    binary.insort(list, { id = 'j', score = 4 }, func)
+    assert.are.equal(list[1].id, 'a')
+    assert.are.equal(list[2].id, 'd')
+    assert.are.equal(list[3].id, 'c')
+    assert.are.equal(list[4].id, 'j')
+    assert.are.equal(list[5].id, 'b')
+    assert.are.equal(list[6].id, 'i')
+    assert.are.equal(list[7].id, 'h')
+    assert.are.equal(list[8].id, 'e')
+    assert.are.equal(list[9].id, 'g')
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/buffer.lua

@@ -0,0 +1,17 @@
+local buffer = {}
+
+buffer.ensure = setmetatable({
+  cache = {},
+}, {
+  __call = function(self, name)
+    if not (self.cache[name] and vim.api.nvim_buf_is_valid(self.cache[name])) then
+      local buf = vim.api.nvim_create_buf(false, true)
+      vim.api.nvim_buf_set_option(buf, 'buftype', 'nofile')
+      vim.api.nvim_buf_set_option(buf, 'bufhidden', 'hide')
+      self.cache[name] = buf
+    end
+    return self.cache[name]
+  end,
+})
+
+return buffer

bundle/nvim-cmp/lua/cmp/utils/cache.lua

@@ -0,0 +1,58 @@
+---@class cmp.Cache
+---@field public entries any
+local cache = {}
+
+cache.new = function()
+  local self = setmetatable({}, { __index = cache })
+  self.entries = {}
+  return self
+end
+
+---Get cache value
+---@param key string
+---@return any|nil
+cache.get = function(self, key)
+  key = self:key(key)
+  if self.entries[key] ~= nil then
+    return self.entries[key]
+  end
+  return nil
+end
+
+---Set cache value explicitly
+---@param key string
+---@vararg any
+cache.set = function(self, key, value)
+  key = self:key(key)
+  self.entries[key] = value
+end
+
+---Ensure value by callback
+---@param key string
+---@param callback fun(): any
+cache.ensure = function(self, key, callback)
+  local value = self:get(key)
+  if value == nil then
+    local v = callback()
+    self:set(key, v)
+    return v
+  end
+  return value
+end
+
+---Clear all cache entries
+cache.clear = function(self)
+  self.entries = {}
+end
+
+---Create key
+---@param key string|table
+---@return string
+cache.key = function(_, key)
+  if type(key) == 'table' then
+    return table.concat(key, ':')
+  end
+  return key
+end
+
+return cache

bundle/nvim-cmp/lua/cmp/utils/char.lua

@@ -0,0 +1,115 @@
+local alpha = {}
+string.gsub('abcdefghijklmnopqrstuvwxyz', '.', function(char)
+  alpha[string.byte(char)] = true
+end)
+
+local ALPHA = {}
+string.gsub('ABCDEFGHIJKLMNOPQRSTUVWXYZ', '.', function(char)
+  ALPHA[string.byte(char)] = true
+end)
+
+local digit = {}
+string.gsub('1234567890', '.', function(char)
+  digit[string.byte(char)] = true
+end)
+
+local white = {}
+string.gsub(' \t\n', '.', function(char)
+  white[string.byte(char)] = true
+end)
+
+local char = {}
+
+---@param byte number
+---@return boolean
+char.is_upper = function(byte)
+  return ALPHA[byte]
+end
+
+---@param byte number
+---@return boolean
+char.is_alpha = function(byte)
+  return alpha[byte] or ALPHA[byte]
+end
+
+---@param byte number
+---@return boolean
+char.is_digit = function(byte)
+  return digit[byte]
+end
+
+---@param byte number
+---@return boolean
+char.is_white = function(byte)
+  return white[byte]
+end
+
+---@param byte number
+---@return boolean
+char.is_symbol = function(byte)
+  return not (char.is_alnum(byte) or char.is_white(byte))
+end
+
+---@param byte number
+---@return boolean
+char.is_printable = function(byte)
+  return string.match(string.char(byte), '^%c$') == nil
+end
+
+---@param byte number
+---@return boolean
+char.is_alnum = function(byte)
+  return char.is_alpha(byte) or char.is_digit(byte)
+end
+
+---@param text string
+---@param index number
+---@return boolean
+char.is_semantic_index = function(text, index)
+  if index <= 1 then
+    return true
+  end
+
+  local prev = string.byte(text, index - 1)
+  local curr = string.byte(text, index)
+
+  if not char.is_upper(prev) and char.is_upper(curr) then
+    return true
+  end
+  if char.is_symbol(curr) or char.is_white(curr) then
+    return true
+  end
+  if not char.is_alpha(prev) and char.is_alpha(curr) then
+    return true
+  end
+  if not char.is_digit(prev) and char.is_digit(curr) then
+    return true
+  end
+  return false
+end
+
+---@param text string
+---@param current_index number
+---@return boolean
+char.get_next_semantic_index = function(text, current_index)
+  for i = current_index + 1, #text do
+    if char.is_semantic_index(text, i) then
+      return i
+    end
+  end
+  return #text + 1
+end
+
+---Ignore case match
+---@param byte1 number
+---@param byte2 number
+---@return boolean
+char.match = function(byte1, byte2)
+  if not char.is_alpha(byte1) or not char.is_alpha(byte2) then
+    return byte1 == byte2
+  end
+  local diff = byte1 - byte2
+  return diff == 0 or diff == 32 or diff == -32
+end
+
+return char

bundle/nvim-cmp/lua/cmp/utils/debug.lua

@@ -0,0 +1,20 @@
+local debug = {}
+
+debug.flag = false
+
+---Print log
+---@vararg any
+debug.log = function(...)
+  if debug.flag then
+    local data = {}
+    for _, v in ipairs({ ... }) do
+      if not vim.tbl_contains({ 'string', 'number', 'boolean' }, type(v)) then
+        v = vim.inspect(v)
+      end
+      table.insert(data, v)
+    end
+    print(table.concat(data, '\t'))
+  end
+end
+
+return debug

bundle/nvim-cmp/lua/cmp/utils/event.lua

@@ -0,0 +1,51 @@
+---@class cmp.Event
+---@field private events table<string, function[]>
+local event = {}
+
+---Create vents
+event.new = function()
+  local self = setmetatable({}, { __index = event })
+  self.events = {}
+  return self
+end
+
+---Add event listener
+---@param name string
+---@param callback function
+---@return function
+event.on = function(self, name, callback)
+  if not self.events[name] then
+    self.events[name] = {}
+  end
+  table.insert(self.events[name], callback)
+  return function()
+    self:off(name, callback)
+  end
+end
+
+---Remove event listener
+---@param name string
+---@param callback function
+event.off = function(self, name, callback)
+  for i, callback_ in ipairs(self.events[name] or {}) do
+    if callback_ == callback then
+      table.remove(self.events[name], i)
+      break
+    end
+  end
+end
+
+---Remove all events
+event.clear = function(self)
+  self.events = {}
+end
+
+---Emit event
+---@param name string
+event.emit = function(self, name, ...)
+  for _, callback in ipairs(self.events[name] or {}) do
+    callback(...)
+  end
+end
+
+return event

bundle/nvim-cmp/lua/cmp/utils/feedkeys.lua

@@ -0,0 +1,110 @@
+local keymap = require('cmp.utils.keymap')
+local misc = require('cmp.utils.misc')
+
+local feedkeys = {}
+
+feedkeys.call = setmetatable({
+  callbacks = {},
+}, {
+  __call = function(self, keys, mode, callback)
+    if vim.fn.reg_recording() ~= '' then
+      return feedkeys.call_macro(keys, mode, callback)
+    end
+
+    local is_insert = string.match(mode, 'i') ~= nil
+    local is_immediate = string.match(mode, 'x') ~= nil
+
+    local queue = {}
+    if #keys > 0 then
+      table.insert(queue, { keymap.t('<Cmd>set lazyredraw<CR>'), 'n' })
+      table.insert(queue, { keymap.t('<Cmd>set textwidth=0<CR>'), 'n' })
+      table.insert(queue, { keymap.t('<Cmd>set eventignore=all<CR>'), 'n' })
+      table.insert(queue, { keys, string.gsub(mode, '[itx]', ''), true })
+      table.insert(queue, { keymap.t('<Cmd>set %slazyredraw<CR>'):format(vim.o.lazyredraw and '' or 'no'), 'n' })
+      table.insert(queue, { keymap.t('<Cmd>set textwidth=%s<CR>'):format(vim.bo.textwidth or 0), 'n' })
+      table.insert(queue, { keymap.t('<Cmd>set eventignore=%s<CR>'):format(vim.o.eventignore or ''), 'n' })
+    end
+
+    if callback then
+      local id = misc.id('cmp.utils.feedkeys.call')
+      self.callbacks[id] = callback
+      table.insert(queue, { keymap.t('<Cmd>call v:lua.cmp.utils.feedkeys.call.run(%s)<CR>'):format(id), 'n', true })
+    end
+
+    if is_insert then
+      for i = #queue, 1, -1 do
+        vim.api.nvim_feedkeys(queue[i][1], queue[i][2] .. 'i', queue[i][3])
+      end
+    else
+      for i = 1, #queue do
+        vim.api.nvim_feedkeys(queue[i][1], queue[i][2], queue[i][3])
+      end
+    end
+
+    if is_immediate then
+      vim.api.nvim_feedkeys('', 'x', true)
+    end
+  end,
+})
+misc.set(_G, { 'cmp', 'utils', 'feedkeys', 'call', 'run' }, function(id)
+  if feedkeys.call.callbacks[id] then
+    feedkeys.call.callbacks[id]()
+    feedkeys.call.callbacks[id] = nil
+  end
+  return ''
+end)
+
+feedkeys.call_macro = setmetatable({
+  queue = {},
+  current = nil,
+  timer = vim.loop.new_timer(),
+  running = false,
+}, {
+  __call = function(self, keys, mode, callback)
+    local is_insert = string.match(mode, 'i') ~= nil
+    table.insert(self.queue, is_insert and 1 or #self.queue + 1, {
+      keys = keys,
+      mode = mode,
+      callback = callback,
+    })
+
+    if not self.running then
+      self.running = true
+      local consume
+      consume = vim.schedule_wrap(function()
+        if vim.fn.getchar(1) == 0 then
+          if self.current then
+            vim.cmd(('set backspace=%s'):format(self.current.backspace or ''))
+            vim.cmd(('set eventignore=%s'):format(self.current.eventignore or ''))
+            if self.current.callback then
+              self.current.callback()
+            end
+            self.current = nil
+          end
+
+          local current = table.remove(self.queue, 1)
+          if current then
+            self.current = {
+              keys = current.keys,
+              callback = current.callback,
+              backspace = vim.o.backspace,
+              eventignore = vim.o.eventignore,
+            }
+            vim.api.nvim_feedkeys(keymap.t('<Cmd>set backspace=start<CR>'), 'n', true)
+            vim.api.nvim_feedkeys(keymap.t('<Cmd>set eventignore=all<CR>'), 'n', true)
+            vim.api.nvim_feedkeys(current.keys, string.gsub(current.mode, '[i]', ''), true) -- 'i' flag is manually resolved.
+          end
+        end
+
+        if #self.queue ~= 0 or self.current then
+          vim.defer_fn(consume, 1)
+        else
+          self.running = false
+        end
+      end)
+      vim.defer_fn(consume, 1)
+    end
+  end,
+})
+
+return feedkeys

bundle/nvim-cmp/lua/cmp/utils/feedkeys_spec.lua

@@ -0,0 +1,56 @@
+local spec = require('cmp.utils.spec')
+local keymap = require('cmp.utils.keymap')
+
+local feedkeys = require('cmp.utils.feedkeys')
+
+describe('feedkeys', function()
+  before_each(spec.before)
+
+  it('dot-repeat', function()
+    local reg
+    feedkeys.call(keymap.t('iaiueo<Esc>'), 'nx', function()
+      reg = vim.fn.getreg('.')
+    end)
+    assert.are.equal(reg, keymap.t('aiueo'))
+  end)
+
+  it('textwidth', function()
+    vim.cmd([[setlocal textwidth=6]])
+    feedkeys.call(keymap.t('iaiueo '), 'nx')
+    feedkeys.call(keymap.t('aaiueoaiueo'), 'nx')
+    assert.are.same(vim.api.nvim_buf_get_lines(0, 0, -1, false), {
+      'aiueo aiueoaiueo',
+    })
+  end)
+
+  it('autoindent', function()
+    vim.cmd([[setlocal indentkeys+==end]])
+    feedkeys.call(keymap.t('iif<CR><Tab>end') .. keymap.autoindent(), 'nx')
+    assert.are.same(vim.api.nvim_buf_get_lines(0, 0, -1, false), {
+      'if',
+      'end',
+    })
+  end)
+
+  it('testability', function()
+    feedkeys.call('i', 'n', function()
+      feedkeys.call('', 'n', function()
+        feedkeys.call('aiueo', 'in')
+      end)
+      feedkeys.call('', 'n', function()
+        feedkeys.call(keymap.t('<BS><BS><BS><BS><BS>'), 'in')
+      end)
+      feedkeys.call('', 'n', function()
+        feedkeys.call(keymap.t('abcde'), 'in')
+      end)
+      feedkeys.call('', 'n', function()
+        feedkeys.call(keymap.t('<BS><BS><BS><BS><BS>'), 'in')
+      end)
+      feedkeys.call('', 'n', function()
+        feedkeys.call(keymap.t('12345'), 'in')
+      end)
+    end)
+    feedkeys.call('', 'x')
+    assert.are.same(vim.api.nvim_buf_get_lines(0, 0, -1, false), { '12345' })
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/highlight.lua

@@ -0,0 +1,46 @@
+local highlight = {}
+
+highlight.keys = {
+  'gui',
+  'guifg',
+  'guibg',
+  'cterm',
+  'ctermfg',
+  'ctermbg',
+}
+
+highlight.inherit = function(name, source, override)
+  local cmd = ('highlight! default %s'):format(name)
+  for _, key in ipairs(highlight.keys) do
+    if override[key] then
+      cmd = cmd .. (' %s=%s'):format(key, override[key])
+    else
+      local v = highlight.get(source, key)
+      v = v == '' and 'NONE' or v
+      cmd = cmd .. (' %s=%s'):format(key, v)
+    end
+  end
+  vim.cmd(cmd)
+end
+
+highlight.get = function(source, key)
+  if key == 'gui' or key == 'cterm' then
+    local ui = {}
+    for _, k in ipairs({ 'bold', 'italic', 'reverse', 'inverse', 'standout', 'underline', 'undercurl', 'strikethrough' }) do
+      if vim.fn.synIDattr(vim.fn.hlID(source), k, key) == 1 then
+        table.insert(ui, k)
+      end
+    end
+    return table.concat(ui, ',')
+  elseif key == 'guifg' then
+    return vim.fn.synIDattr(vim.fn.hlID(source), 'fg#', 'gui')
+  elseif key == 'guibg' then
+    return vim.fn.synIDattr(vim.fn.hlID(source), 'bg#', 'gui')
+  elseif key == 'ctermfg' then
+    return vim.fn.synIDattr(vim.fn.hlID(source), 'fg', 'term')
+  elseif key == 'ctermbg' then
+    return vim.fn.synIDattr(vim.fn.hlID(source), 'bg', 'term')
+  end
+end
+
+return highlight

bundle/nvim-cmp/lua/cmp/utils/keymap.lua

@@ -0,0 +1,267 @@
+local misc = require('cmp.utils.misc')
+local api = require('cmp.utils.api')
+
+local keymap = {}
+
+---Shortcut for nvim_replace_termcodes
+---@param keys string
+---@return string
+keymap.t = function(keys)
+  return vim.api.nvim_replace_termcodes(keys, true, true, true)
+end
+
+---Normalize key sequence.
+---@param keys string
+---@return string
+keymap.normalize = function(keys)
+  vim.api.nvim_set_keymap('t', '<Plug>(cmp.utils.keymap.normalize)', keys, {})
+  for _, map in ipairs(vim.api.nvim_get_keymap('t')) do
+    if keymap.equals(map.lhs, '<Plug>(cmp.utils.keymap.normalize)') then
+      return map.rhs
+    end
+  end
+  return keys
+end
+
+---Return vim notation keymapping (simple conversion).
+---@param s string
+---@return string
+keymap.to_keymap = setmetatable({
+  ['<CR>'] = { '\n', '\r', '\r\n' },
+  ['<Tab>'] = { '\t' },
+  ['<BSlash>'] = { '\\' },
+  ['<Bar>'] = { '|' },
+  ['<Space>'] = { ' ' },
+}, {
+  __call = function(self, s)
+    return string.gsub(s, '.', function(c)
+      for key, chars in pairs(self) do
+        if vim.tbl_contains(chars, c) then
+          return key
+        end
+      end
+      return c
+    end)
+  end,
+})
+
+---Mode safe break undo
+keymap.undobreak = function()
+  if not api.is_insert_mode() then
+    return ''
+  end
+  return keymap.t('<C-g>u')
+end
+
+---Mode safe join undo
+keymap.undojoin = function()
+  if not api.is_insert_mode() then
+    return ''
+  end
+  return keymap.t('<C-g>U')
+end
+
+---Create backspace keys.
+---@param count number
+---@return string
+keymap.backspace = function(count)
+  if count <= 0 then
+    return ''
+  end
+  local keys = {}
+  table.insert(keys, keymap.t(string.rep('<BS>', count)))
+  return table.concat(keys, '')
+end
+
+---Create autoindent keys
+---@return string
+keymap.autoindent = function()
+  local keys = {}
+  table.insert(keys, keymap.t('<Cmd>setlocal cindent<CR>'))
+  table.insert(keys, keymap.t('<Cmd>setlocal indentkeys+=!^F<CR>'))
+  table.insert(keys, keymap.t('<C-f>'))
+  table.insert(keys, keymap.t('<Cmd>setlocal %scindent<CR>'):format(vim.bo.cindent and '' or 'no'))
+  table.insert(keys, keymap.t('<Cmd>setlocal indentkeys=%s<CR>'):format(vim.bo.indentkeys:gsub('|', '\\|')))
+  return table.concat(keys, '')
+end
+
+---Return two key sequence are equal or not.
+---@param a string
+---@param b string
+---@return boolean
+keymap.equals = function(a, b)
+  return keymap.t(a) == keymap.t(b)
+end
+
+---Register keypress handler.
+keymap.listen = function(mode, lhs, callback)
+  lhs = keymap.normalize(keymap.to_keymap(lhs))
+
+  local existing = keymap.get_mapping(mode, lhs)
+  local id = string.match(existing.rhs, 'v:lua%.cmp%.utils%.keymap%.set_map%((%d+)%)')
+  if id and keymap.set_map.callbacks[tonumber(id, 10)] then
+    return
+  end
+
+  local bufnr = existing.buffer and vim.api.nvim_get_current_buf() or -1
+  local fallback = keymap.evacuate(bufnr, mode, lhs)
+  keymap.set_map(bufnr, mode, lhs, function()
+    if mode == 'c' and vim.fn.getcmdtype() == '=' then
+      return vim.api.nvim_feedkeys(keymap.t(fallback.keys), fallback.mode, true)
+    end
+
+    callback(
+      lhs,
+      misc.once(function()
+        vim.api.nvim_feedkeys(keymap.t(fallback.keys), fallback.mode, true)
+      end)
+    )
+  end, {
+    expr = false,
+    noremap = true,
+    silent = true,
+  })
+end
+
+---Get mapping
+---@param mode string
+---@param lhs string
+---@return table
+keymap.get_mapping = function(mode, lhs)
+  lhs = keymap.normalize(lhs)
+
+  for _, map in ipairs(vim.api.nvim_buf_get_keymap(0, mode)) do
+    if keymap.equals(map.lhs, lhs) then
+      return {
+        lhs = map.lhs,
+        rhs = map.rhs,
+        expr = map.expr == 1,
+        noremap = map.noremap == 1,
+        script = map.script == 1,
+        silent = map.silent == 1,
+        nowait = map.nowait == 1,
+        buffer = true,
+      }
+    end
+  end
+
+  for _, map in ipairs(vim.api.nvim_get_keymap(mode)) do
+    if keymap.equals(map.lhs, lhs) then
+      return {
+        lhs = map.lhs,
+        rhs = map.rhs,
+        expr = map.expr == 1,
+        noremap = map.noremap == 1,
+        script = map.script == 1,
+        silent = map.silent == 1,
+        nowait = map.nowait == 1,
+        buffer = false,
+      }
+    end
+  end
+
+  return {
+    lhs = lhs,
+    rhs = lhs,
+    expr = false,
+    noremap = true,
+    script = false,
+    silent = false,
+    nowait = false,
+    buffer = false,
+  }
+end
+
+---Evacuate existing key mapping
+---@param bufnr number
+---@param mode string
+---@param lhs string
+---@return { keys: string, mode: string }
+keymap.evacuate = function(bufnr, mode, lhs)
+  local map = keymap.get_mapping(mode, lhs)
+  if not map then
+    return { keys = lhs, mode = 'itn' }
+  end
+
+  -- Keep existing mapping as <Plug> mapping. We escape fisrt recursive key sequence. See `:help recursive_mapping`)
+  local rhs = map.rhs
+  if not map.noremap and map.expr then
+    -- remap & expr mapping should evacuate as <Plug> mapping with solving recursive mapping.
+    rhs = function()
+      return keymap.t(keymap.recursive(bufnr, mode, lhs, vim.api.nvim_eval(map.rhs)))
+    end
+  elseif map.noremap and map.expr then
+    -- noremap & expr mapping should always evacuate as <Plug> mapping.
+    rhs = rhs
+  elseif map.script then
+    -- script mapping should always evacuate as <Plug> mapping.
+    rhs = rhs
+  elseif not map.noremap then
+    -- remap & non-expr mapping should be checked if recursive or not.
+    rhs = keymap.recursive(bufnr, mode, lhs, rhs)
+    if keymap.equals(rhs, map.rhs) or map.noremap then
+      return { keys = rhs, mode = 'it' .. (map.noremap and 'n' or '') }
+    end
+  else
+    -- noremap & non-expr mapping doesn't need to evacuate.
+    return { keys = rhs, mode = 'it' .. (map.noremap and 'n' or '') }
+  end
+
+  local fallback = ('<Plug>(cmp.utils.keymap.evacuate:%s)'):format(map.lhs)
+  keymap.set_map(bufnr, mode, fallback, rhs, {
+    expr = map.expr,
+    noremap = map.noremap,
+    script = map.script,
+    silent = mode ~= 'c', -- I can't understand but it solves the #427 (wilder.nvim's mapping does not work if silent=true in cmdline mode...)
+  })
+  return { keys = fallback, mode = 'it' }
+end
+
+---Solve recursive mapping
+---@param bufnr number
+---@param mode string
+---@param lhs string
+---@param rhs string
+---@return string
+keymap.recursive = function(bufnr, mode, lhs, rhs)
+  rhs = keymap.normalize(rhs)
+
+  local recursive_lhs = ('<Plug>(cmp.utils.keymap.recursive:%s)'):format(lhs)
+  local recursive_rhs = string.gsub(rhs, '^' .. vim.pesc(keymap.normalize(lhs)), recursive_lhs)
+  if not keymap.equals(recursive_rhs, rhs) then
+    keymap.set_map(bufnr, mode, recursive_lhs, lhs, {
+      expr = false,
+      noremap = true,
+      silent = true,
+    })
+  end
+  return recursive_rhs
+end
+
+---Set keymapping
+keymap.set_map = setmetatable({
+  callbacks = {},
+}, {
+  __call = function(self, bufnr, mode, lhs, rhs, opts)
+    if type(rhs) == 'function' then
+      local id = misc.id('cmp.utils.keymap.set_map')
+      self.callbacks[id] = rhs
+      if opts.expr then
+        rhs = ('v:lua.cmp.utils.keymap.set_map(%s)'):format(id)
+      else
+        rhs = ('<Cmd>call v:lua.cmp.utils.keymap.set_map(%s)<CR>'):format(id)
+      end
+    end
+
+    if bufnr == -1 then
+      vim.api.nvim_set_keymap(mode, lhs, rhs, opts)
+    else
+      vim.api.nvim_buf_set_keymap(bufnr, mode, lhs, rhs, opts)
+    end
+  end,
+})
+misc.set(_G, { 'cmp', 'utils', 'keymap', 'set_map' }, function(id)
+  return keymap.set_map.callbacks[id]() or ''
+end)
+
+return keymap

bundle/nvim-cmp/lua/cmp/utils/keymap_spec.lua

@@ -0,0 +1,81 @@
+local spec = require('cmp.utils.spec')
+
+local keymap = require('cmp.utils.keymap')
+
+describe('keymap', function()
+  before_each(spec.before)
+
+  it('to_keymap', function()
+    assert.are.equal(keymap.to_keymap('\n'), '<CR>')
+    assert.are.equal(keymap.to_keymap('<CR>'), '<CR>')
+    assert.are.equal(keymap.to_keymap('|'), '<Bar>')
+  end)
+
+  describe('evacuate', function()
+    before_each(spec.before)
+
+    it('expr & register', function()
+      vim.api.nvim_buf_set_keymap(0, 'i', '(', [['<C-r>="("<CR>']], {
+        expr = true,
+        noremap = false,
+      })
+      local fallback = keymap.evacuate(0, 'i', '(')
+      vim.api.nvim_feedkeys('i' .. keymap.t(fallback.keys), fallback.mode .. 'x', true)
+      assert.are.same({ '(' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+    end)
+
+    it('recursive & <Plug> (tpope/vim-endwise)', function()
+      vim.api.nvim_buf_set_keymap(0, 'i', '<Plug>(paren-close)', [[)<Left>]], {
+        expr = false,
+        noremap = true,
+      })
+      vim.api.nvim_buf_set_keymap(0, 'i', '(', [[(<Plug>(paren-close)]], {
+        expr = false,
+        noremap = false,
+      })
+      local fallback = keymap.evacuate(0, 'i', '(')
+      vim.api.nvim_feedkeys('i' .. keymap.t(fallback.keys), fallback.mode .. 'x', true)
+      assert.are.same({ '()' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+    end)
+
+    describe('expr & recursive', function()
+      before_each(spec.before)
+
+      it('true', function()
+        vim.api.nvim_buf_set_keymap(0, 'i', '<Tab>', [[v:true ? '<C-r>="foobar"<CR>' : '<Tab>aiueo']], {
+          expr = true,
+          noremap = false,
+        })
+        local fallback = keymap.evacuate(0, 'i', '<Tab>')
+        vim.api.nvim_feedkeys('i' .. keymap.t(fallback.keys), fallback.mode .. 'x', true)
+        assert.are.same({ 'foobar' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+      end)
+      it('false', function()
+        vim.api.nvim_buf_set_keymap(0, 'i', '<Tab>', [[v:false ? '<C-r>="foobar"<CR>' : '<Tab>aiueo']], {
+          expr = true,
+          noremap = false,
+        })
+        local fallback = keymap.evacuate(0, 'i', '<Tab>')
+        vim.api.nvim_feedkeys('i' .. keymap.t(fallback.keys), fallback.mode .. 'x', true)
+        assert.are.same({ '\taiueo' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+      end)
+    end)
+  end)
+  describe('realworld', function()
+    before_each(spec.before)
+    it('#226', function()
+      keymap.listen('i', '<c-n>', function(_, fallback)
+        fallback()
+      end)
+      vim.api.nvim_feedkeys(keymap.t('iaiueo<CR>a<C-n><C-n>'), 'tx', true)
+      assert.are.same({ 'aiueo', 'aiueo' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+    end)
+    it('#414', function()
+      keymap.listen('i', '<M-j>', function()
+        vim.api.nvim_feedkeys(keymap.t('<C-n>'), 'int', true)
+      end)
+      vim.api.nvim_feedkeys(keymap.t('iaiueo<CR>a<M-j><M-j>'), 'tx', true)
+      assert.are.same({ 'aiueo', 'aiueo' }, vim.api.nvim_buf_get_lines(0, 0, -1, true))
+    end)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/misc.lua

@@ -0,0 +1,181 @@
+local misc = {}
+
+---Create once callback
+---@param callback function
+---@return function
+misc.once = function(callback)
+  local done = false
+  return function(...)
+    if done then
+      return
+    end
+    done = true
+    callback(...)
+  end
+end
+
+---Return concatenated list
+---@param list1 any[]
+---@param list2 any[]
+---@return any[]
+misc.concat = function(list1, list2)
+  local new_list = {}
+  for _, v in ipairs(list1) do
+    table.insert(new_list, v)
+  end
+  for _, v in ipairs(list2) do
+    table.insert(new_list, v)
+  end
+  return new_list
+end
+
+---The symbol to remove key in misc.merge.
+misc.none = vim.NIL
+
+---Merge two tables recursively
+---@generic T
+---@param v1 T
+---@param v2 T
+---@return T
+misc.merge = function(v1, v2)
+  local merge1 = type(v1) == 'table' and (not vim.tbl_islist(v1) or vim.tbl_isempty(v1))
+  local merge2 = type(v2) == 'table' and (not vim.tbl_islist(v2) or vim.tbl_isempty(v2))
+  if merge1 and merge2 then
+    local new_tbl = {}
+    for k, v in pairs(v2) do
+      new_tbl[k] = misc.merge(v1[k], v)
+    end
+    for k, v in pairs(v1) do
+      if v2[k] == nil and v ~= misc.none then
+        new_tbl[k] = v
+      end
+    end
+    return new_tbl
+  end
+  if v1 == misc.none then
+    return nil
+  end
+  if v1 == nil then
+    if v2 == misc.none then
+      return nil
+    else
+      return v2
+    end
+  end
+  if v1 == true then
+    if merge2 then
+      return v2
+    end
+    return {}
+  end
+
+  return v1
+end
+
+---Generate id for group name
+misc.id = setmetatable({
+  group = {},
+}, {
+  __call = function(_, group)
+    misc.id.group[group] = misc.id.group[group] or vim.loop.now()
+    misc.id.group[group] = misc.id.group[group] + 1
+    return misc.id.group[group]
+  end,
+})
+
+---Check the value is nil or not.
+---@param v boolean
+---@return boolean
+misc.safe = function(v)
+  if v == nil or v == vim.NIL then
+    return nil
+  end
+  return v
+end
+
+---Treat 1/0 as bool value
+---@param v boolean|"1"|"0"
+---@param def boolean
+---@return boolean
+misc.bool = function(v, def)
+  if misc.safe(v) == nil then
+    return def
+  end
+  return v == true or v == 1
+end
+
+---Set value to deep object
+---@param t table
+---@param keys string[]
+---@param v any
+misc.set = function(t, keys, v)
+  local c = t
+  for i = 1, #keys - 1 do
+    local key = keys[i]
+    c[key] = misc.safe(c[key]) or {}
+    c = c[key]
+  end
+  c[keys[#keys]] = v
+end
+
+---Copy table
+---@generic T
+---@param tbl T
+---@return T
+misc.copy = function(tbl)
+  if type(tbl) ~= 'table' then
+    return tbl
+  end
+
+  if vim.tbl_islist(tbl) then
+    local copy = {}
+    for i, value in ipairs(tbl) do
+      copy[i] = misc.copy(value)
+    end
+    return copy
+  end
+
+  local copy = {}
+  for key, value in pairs(tbl) do
+    copy[key] = misc.copy(value)
+  end
+  return copy
+end
+
+---Safe version of vim.str_utfindex
+---@param text string
+---@param vimindex number
+---@return number
+misc.to_utfindex = function(text, vimindex)
+  return vim.str_utfindex(text, math.max(0, math.min(vimindex - 1, #text)))
+end
+
+---Safe version of vim.str_byteindex
+---@param text string
+---@param utfindex number
+---@return number
+misc.to_vimindex = function(text, utfindex)
+  for i = utfindex, 1, -1 do
+    local s, v = pcall(function()
+      return vim.str_byteindex(text, i) + 1
+    end)
+    if s then
+      return v
+    end
+  end
+  return utfindex + 1
+end
+
+---Mark the function as deprecated
+misc.deprecated = function(fn, msg)
+  local printed = false
+  return function(...)
+    if not printed then
+      print(msg)
+      printed = true
+    end
+    return fn(...)
+  end
+end
+
+return misc

bundle/nvim-cmp/lua/cmp/utils/misc_spec.lua

@@ -0,0 +1,51 @@
+local spec = require('cmp.utils.spec')
+
+local misc = require('cmp.utils.misc')
+
+describe('misc', function()
+  before_each(spec.before)
+
+  it('merge', function()
+    local merged
+    merged = misc.merge({
+      a = {},
+    }, {
+      a = {
+        b = 1,
+      },
+    })
+    assert.are.equal(merged.a.b, 1)
+
+    merged = misc.merge({
+      a = false,
+    }, {
+      a = {
+        b = 1,
+      },
+    })
+    assert.are.equal(merged.a, false)
+
+    merged = misc.merge({
+      a = misc.none,
+    }, {
+      a = {
+        b = 1,
+      },
+    })
+    assert.are.equal(merged.a, nil)
+
+    merged = misc.merge({
+      a = misc.none,
+    }, {
+      a = nil,
+    })
+    assert.are.equal(merged.a, nil)
+
+    merged = misc.merge({
+      a = nil,
+    }, {
+      a = misc.none,
+    })
+    assert.are.equal(merged.a, nil)
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/pattern.lua

@@ -0,0 +1,28 @@
+local pattern = {}
+
+pattern._regexes = {}
+
+pattern.regex = function(p)
+  if not pattern._regexes[p] then
+    pattern._regexes[p] = vim.regex(p)
+  end
+  return pattern._regexes[p]
+end
+
+pattern.offset = function(p, text)
+  local s, e = pattern.regex(p):match_str(text)
+  if s then
+    return s + 1, e + 1
+  end
+  return nil, nil
+end
+
+pattern.matchstr = function(p, text)
+  local s, e = pattern.offset(p, text)
+  if s then
+    return string.sub(text, s, e)
+  end
+  return nil
+end
+
+return pattern

bundle/nvim-cmp/lua/cmp/utils/spec.lua

@@ -0,0 +1,92 @@
+local context = require('cmp.context')
+local source = require('cmp.source')
+local types = require('cmp.types')
+local config = require('cmp.config')
+
+local spec = {}
+
+spec.before = function()
+  vim.cmd([[
+    bdelete!
+    enew!
+    imapclear
+    imapclear <buffer>
+    cmapclear
+    cmapclear <buffer>
+    smapclear
+    smapclear <buffer>
+    xmapclear
+    xmapclear <buffer>
+    tmapclear
+    tmapclear <buffer>
+    setlocal noswapfile
+    setlocal virtualedit=all
+    setlocal completeopt=menu,menuone,noselect
+  ]])
+  config.set_global({
+    sources = {
+      { name = 'spec' },
+    },
+    snippet = {
+      expand = function(args)
+        local ctx = context.new()
+        vim.api.nvim_buf_set_text(ctx.bufnr, ctx.cursor.row - 1, ctx.cursor.col - 1, ctx.cursor.row - 1, ctx.cursor.col - 1, vim.split(string.gsub(args.body, '%$0', ''), '\n'))
+        for i, t in ipairs(vim.split(args.body, '\n')) do
+          local s = string.find(t, '$0', 1, true)
+          if s then
+            if i == 1 then
+              vim.api.nvim_win_set_cursor(0, { ctx.cursor.row, ctx.cursor.col + s - 2 })
+            else
+              vim.api.nvim_win_set_cursor(0, { ctx.cursor.row + i - 1, s - 1 })
+            end
+            break
+          end
+        end
+      end,
+    },
+  })
+  config.set_cmdline({
+    sources = {
+      { name = 'spec' },
+    },
+  }, ':')
+end
+
+spec.state = function(text, row, col)
+  vim.fn.setline(1, text)
+  vim.fn.cursor(row, col)
+  local ctx = context.empty()
+  local s = source.new('spec', {
+    complete = function() end,
+  })
+  return {
+    context = function()
+      return ctx
+    end,
+    source = function()
+      return s
+    end,
+    backspace = function()
+      vim.fn.feedkeys('x', 'nx')
+      vim.fn.feedkeys('h', 'nx')
+      ctx = context.new(ctx, { reason = types.cmp.ContextReason.Auto })
+      s:complete(ctx, function() end)
+      return ctx
+    end,
+    input = function(char)
+      vim.fn.feedkeys(('i%s'):format(char), 'nx')
+      vim.fn.feedkeys(string.rep('l', #char), 'nx')
+      ctx.prev_context = nil
+      ctx = context.new(ctx, { reason = types.cmp.ContextReason.Auto })
+      s:complete(ctx, function() end)
+      return ctx
+    end,
+    manual = function()
+      ctx = context.new(ctx, { reason = types.cmp.ContextReason.Manual })
+      s:complete(ctx, function() end)
+      return ctx
+    end,
+  }
+end
+
+return spec

bundle/nvim-cmp/lua/cmp/utils/str.lua

@@ -0,0 +1,156 @@
+local char = require('cmp.utils.char')
+local pattern = require('cmp.utils.pattern')
+
+local str = {}
+
+local INVALID_CHARS = {}
+INVALID_CHARS[string.byte("'")] = true
+INVALID_CHARS[string.byte('"')] = true
+INVALID_CHARS[string.byte('=')] = true
+INVALID_CHARS[string.byte('$')] = true
+INVALID_CHARS[string.byte('(')] = true
+INVALID_CHARS[string.byte('[')] = true
+INVALID_CHARS[string.byte(' ')] = true
+INVALID_CHARS[string.byte('\t')] = true
+INVALID_CHARS[string.byte('\n')] = true
+INVALID_CHARS[string.byte('\r')] = true
+
+local NR_BYTE = string.byte('\n')
+
+local PAIR_CHARS = {}
+PAIR_CHARS[string.byte('[')] = string.byte(']')
+PAIR_CHARS[string.byte('(')] = string.byte(')')
+PAIR_CHARS[string.byte('<')] = string.byte('>')
+
+---Return if specified text has prefix or not
+---@param text string
+---@param prefix string
+---@return boolean
+str.has_prefix = function(text, prefix)
+  if #text < #prefix then
+    return false
+  end
+  for i = 1, #prefix do
+    if not char.match(string.byte(text, i), string.byte(prefix, i)) then
+      return false
+    end
+  end
+  return true
+end
+
+---Remove suffix
+---@param text string
+---@param suffix string
+---@return string
+str.remove_suffix = function(text, suffix)
+  if #text < #suffix then
+    return text
+  end
+
+  local i = 0
+  while i < #suffix do
+    if string.byte(text, #text - i) ~= string.byte(suffix, #suffix - i) then
+      return text
+    end
+    i = i + 1
+  end
+  return string.sub(text, 1, -#suffix - 1)
+end
+
+---strikethrough
+---@param text string
+---@return string
+str.strikethrough = function(text)
+  local r = pattern.regex('.')
+  local buffer = ''
+  while text ~= '' do
+    local s, e = r:match_str(text)
+    if not s then
+      break
+    end
+    buffer = buffer .. string.sub(text, s, e) .. '̶'
+    text = string.sub(text, e + 1)
+  end
+  return buffer
+end
+
+---trim
+---@param text string
+---@return string
+str.trim = function(text)
+  local s = 1
+  for i = 1, #text do
+    if not char.is_white(string.byte(text, i)) then
+      s = i
+      break
+    end
+  end
+
+  local e = #text
+  for i = #text, 1, -1 do
+    if not char.is_white(string.byte(text, i)) then
+      e = i
+      break
+    end
+  end
+  if s == 1 and e == #text then
+    return text
+  end
+  return string.sub(text, s, e)
+end
+
+---get_word
+---@param text string
+---@return string
+str.get_word = function(text, stop_char)
+  local valids = {}
+  local has_valid = false
+  for idx = 1, #text do
+    local c = string.byte(text, idx)
+    local invalid = INVALID_CHARS[c] and not (valids[c] and stop_char ~= c)
+    if has_valid and invalid then
+      return string.sub(text, 1, idx - 1)
+    end
+    valids[c] = true
+    if PAIR_CHARS[c] then
+      valids[PAIR_CHARS[c]] = true
+    end
+    has_valid = has_valid or not invalid
+  end
+  return text
+end
+
+---Oneline
+---@param text string
+---@return string
+str.oneline = function(text)
+  for i = 1, #text do
+    if string.byte(text, i) == NR_BYTE then
+      return string.sub(text, 1, i - 1)
+    end
+  end
+  return text
+end
+
+---Escape special chars
+---@param text string
+---@param chars string[]
+---@return string
+str.escape = function(text, chars)
+  table.insert(chars, '\\')
+  local escaped = {}
+  local i = 1
+  while i <= #text do
+    local c = string.sub(text, i, i)
+    if vim.tbl_contains(chars, c) then
+      table.insert(escaped, '\\')
+      table.insert(escaped, c)
+    else
+      table.insert(escaped, c)
+    end
+    i = i + 1
+  end
+  return table.concat(escaped, '')
+end
+
+return str

bundle/nvim-cmp/lua/cmp/utils/str_spec.lua

@@ -0,0 +1,30 @@
+local str = require('cmp.utils.str')
+
+describe('utils.str', function()
+  it('get_word', function()
+    assert.are.equal(str.get_word('print'), 'print')
+    assert.are.equal(str.get_word('$variable'), '$variable')
+    assert.are.equal(str.get_word('print()'), 'print')
+    assert.are.equal(str.get_word('["cmp#confirm"]'), '["cmp#confirm"]')
+    assert.are.equal(str.get_word('"devDependencies":', string.byte('"')), '"devDependencies')
+  end)
+
+  it('strikethrough', function()
+    assert.are.equal(str.strikethrough('あいうえお'), 'あ̶い̶う̶え̶お̶')
+  end)
+
+  it('remove_suffix', function()
+    assert.are.equal(str.remove_suffix('log()', '$0'), 'log()')
+    assert.are.equal(str.remove_suffix('log()$0', '$0'), 'log()')
+    assert.are.equal(str.remove_suffix('log()${0}', '${0}'), 'log()')
+    assert.are.equal(str.remove_suffix('log()${0:placeholder}', '${0}'), 'log()${0:placeholder}')
+  end)
+
+  it('escape', function()
+    assert.are.equal(str.escape('plain', {}), 'plain')
+    assert.are.equal(str.escape('plain\\', {}), 'plain\\\\')
+    assert.are.equal(str.escape('plain\\"', {}), 'plain\\\\"')
+    assert.are.equal(str.escape('pla"in', { '"' }), 'pla\\"in')
+    assert.are.equal(str.escape('call("")', { '"' }), 'call(\\"\\")')
+  end)
+end)

bundle/nvim-cmp/lua/cmp/utils/window.lua

@@ -0,0 +1,261 @@
+local cache = require('cmp.utils.cache')
+local misc = require('cmp.utils.misc')
+local buffer = require('cmp.utils.buffer')
+local api = require('cmp.utils.api')
+
+---@class cmp.WindowStyle
+---@field public relative string
+---@field public row number
+---@field public col number
+---@field public width number
+---@field public height number
+---@field public zindex number|nil
+
+---@class cmp.Window
+---@field public name string
+---@field public win number|nil
+---@field public swin1 number|nil
+---@field public swin2 number|nil
+---@field public style cmp.WindowStyle
+---@field public opt table<string, any>
+---@field public cache cmp.Cache
+local window = {}
+
+---new
+---@return cmp.Window
+window.new = function()
+  local self = setmetatable({}, { __index = window })
+  self.name = misc.id('cmp.utils.window.new')
+  self.win = nil
+  self.swin1 = nil
+  self.swin2 = nil
+  self.style = {}
+  self.cache = cache.new()
+  self.opt = {}
+  return self
+end
+
+---Set window option.
+---NOTE: If the window already visible, immediately applied to it.
+---@param key string
+---@param value any
+window.option = function(self, key, value)
+  if vim.fn.exists('+' .. key) == 0 then
+    return
+  end
+
+  if value == nil then
+    return self.opt[key]
+  end
+
+  self.opt[key] = value
+  if self:visible() then
+    vim.api.nvim_win_set_option(self.win, key, value)
+  end
+end
+
+---Set style.
+---@param style cmp.WindowStyle
+window.set_style = function(self, style)
+  if vim.o.columns and vim.o.columns <= style.col + style.width then
+    style.width = vim.o.columns - style.col - 1
+  end
+  if vim.o.lines and vim.o.lines <= style.row + style.height then
+    style.height = vim.o.lines - style.row - 1
+  end
+  self.style = style
+  self.style.zindex = self.style.zindex or 1
+end
+
+---Return buffer id.
+---@return number
+window.get_buffer = function(self)
+  return buffer.ensure(self.name)
+end
+
+---Open window
+---@param style cmp.WindowStyle
+window.open = function(self, style)
+  if style then
+    self:set_style(style)
+  end
+
+  if self.style.width < 1 or self.style.height < 1 then
+    return
+  end
+
+  if self.win and vim.api.nvim_win_is_valid(self.win) then
+    vim.api.nvim_win_set_config(self.win, self.style)
+  else
+    local s = misc.copy(self.style)
+    s.noautocmd = true
+    self.win = vim.api.nvim_open_win(buffer.ensure(self.name), false, s)
+    for k, v in pairs(self.opt) do
+      vim.api.nvim_win_set_option(self.win, k, v)
+    end
+  end
+  self:update()
+end
+
+---Update
+window.update = function(self)
+  if self:has_scrollbar() then
+    local total = self:get_content_height()
+    local info = self:info()
+    local bar_height = math.ceil(info.height * (info.height / total))
+    local bar_offset = math.min(info.height - bar_height, math.floor(info.height * (vim.fn.getwininfo(self.win)[1].topline / total)))
+    local style1 = {}
+    style1.relative = 'editor'
+    style1.style = 'minimal'
+    style1.width = 1
+    style1.height = info.height
+    style1.row = info.row
+    style1.col = info.col + info.width - (info.has_scrollbar and 1 or 0)
+    style1.zindex = (self.style.zindex and (self.style.zindex + 1) or 1)
+    if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
+      vim.api.nvim_win_set_config(self.swin1, style1)
+    else
+      style1.noautocmd = true
+      self.swin1 = vim.api.nvim_open_win(buffer.ensure(self.name .. 'sbuf1'), false, style1)
+      vim.api.nvim_win_set_option(self.swin1, 'winhighlight', 'EndOfBuffer:PmenuSbar,Normal:PmenuSbar,NormalNC:PmenuSbar,NormalFloat:PmenuSbar')
+    end
+    local style2 = {}
+    style2.relative = 'editor'
+    style2.style = 'minimal'
+    style2.width = 1
+    style2.height = bar_height
+    style2.row = info.row + bar_offset
+    style2.col = info.col + info.width - (info.has_scrollbar and 1 or 0)
+    style2.zindex = (self.style.zindex and (self.style.zindex + 2) or 2)
+    if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
+      vim.api.nvim_win_set_config(self.swin2, style2)
+    else
+      style2.noautocmd = true
+      self.swin2 = vim.api.nvim_open_win(buffer.ensure(self.name .. 'sbuf2'), false, style2)
+      vim.api.nvim_win_set_option(self.swin2, 'winhighlight', 'EndOfBuffer:PmenuThumb,Normal:PmenuThumb,NormalNC:PmenuThumb,NormalFloat:PmenuThumb')
+    end
+  else
+    if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
+      vim.api.nvim_win_hide(self.swin1)
+      self.swin1 = nil
+    end
+    if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
+      vim.api.nvim_win_hide(self.swin2)
+      self.swin2 = nil
+    end
+  end
+
+  -- In cmdline, vim does not redraw automatically.
+  if api.is_cmdline_mode() then
+    vim.api.nvim_win_call(self.win, function()
+      vim.cmd([[redraw]])
+    end)
+  end
+end
+
+---Close window
+window.close = function(self)
+  if self.win and vim.api.nvim_win_is_valid(self.win) then
+    if self.win and vim.api.nvim_win_is_valid(self.win) then
+      vim.api.nvim_win_hide(self.win)
+      self.win = nil
+    end
+    if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
+      vim.api.nvim_win_hide(self.swin1)
+      self.swin1 = nil
+    end
+    if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
+      vim.api.nvim_win_hide(self.swin2)
+      self.swin2 = nil
+    end
+  end
+end
+
+---Return the window is visible or not.
+window.visible = function(self)
+  return self.win and vim.api.nvim_win_is_valid(self.win)
+end
+
+---Return the scrollbar will shown or not.
+window.has_scrollbar = function(self)
+  return (self.style.height or 0) < self:get_content_height()
+end
+
+---Return win info.
+window.info = function(self)
+  local border_width = self:get_border_width()
+  local has_scrollbar = self:has_scrollbar()
+  return {
+    row = self.style.row,
+    col = self.style.col,
+    width = self.style.width + border_width + (has_scrollbar and 1 or 0),
+    height = self.style.height,
+    border_width = border_width,
+    has_scrollbar = has_scrollbar,
+  }
+end
+
+---Get border width
+---@return number
+window.get_border_width = function(self)
+  local border = self.style.border
+  if type(border) == 'table' then
+    local new_border = {}
+    while #new_border < 8 do
+      for _, b in ipairs(border) do
+        table.insert(new_border, b)
+      end
+    end
+    border = new_border
+  end
+
+  local w = 0
+  if border then
+    if type(border) == 'string' then
+      if border == 'single' then
+        w = 2
+      elseif border == 'solid' then
+        w = 2
+      elseif border == 'double' then
+        w = 2
+      elseif border == 'rounded' then
+        w = 2
+      elseif border == 'shadow' then
+        w = 1
+      end
+    elseif type(border) == 'table' then
+      local b4 = type(border[4]) == 'table' and border[4][1] or border[4]
+      if #b4 > 0 then
+        w = w + 1
+      end
+      local b8 = type(border[8]) == 'table' and border[8][1] or border[8]
+      if #b8 > 0 then
+        w = w + 1
+      end
+    end
+  end
+  return w
+end
+
+---Get scroll height.
+---@return number
+window.get_content_height = function(self)
+  if not self:option('wrap') then
+    return vim.api.nvim_buf_line_count(self:get_buffer())
+  end
+
+  return self.cache:ensure({
+    'get_content_height',
+    self.style.width,
+    self:get_buffer(),
+    vim.api.nvim_buf_get_changedtick(self:get_buffer()),
+  }, function()
+    local height = 0
+    for _, text in ipairs(vim.api.nvim_buf_get_lines(self:get_buffer(), 0, -1, false)) do
+      height = height + math.ceil(math.max(1, vim.str_utfindex(text)) / self.style.width)
+    end
+    return height
+  end)
+end
+
+return window

bundle/nvim-cmp/lua/cmp/view.lua

@@ -0,0 +1,227 @@
+local config = require('cmp.config')
+local async = require('cmp.utils.async')
+local event = require('cmp.utils.event')
+local keymap = require('cmp.utils.keymap')
+local docs_view = require('cmp.view.docs_view')
+local custom_entries_view = require('cmp.view.custom_entries_view')
+local native_entries_view = require('cmp.view.native_entries_view')
+local ghost_text_view = require('cmp.view.ghost_text_view')
+
+---@class cmp.View
+---@field public event cmp.Event
+---@field private resolve_dedup cmp.AsyncDedup
+---@field private native_entries_view cmp.NativeEntriesView
+---@field private custom_entries_view cmp.CustomEntriesView
+---@field private change_dedup cmp.AsyncDedup
+---@field private docs_view cmp.DocsView
+---@field private ghost_text_view cmp.GhostTextView
+local view = {}
+
+---Create menu
+view.new = function()
+  local self = setmetatable({}, { __index = view })
+  self.resolve_dedup = async.dedup()
+  self.custom_entries_view = custom_entries_view.new()
+  self.native_entries_view = native_entries_view.new()
+  self.docs_view = docs_view.new()
+  self.ghost_text_view = ghost_text_view.new()
+  self.event = event.new()
+
+  return self
+end
+
+---Return the view components are available or not.
+---@return boolean
+view.ready = function(self)
+  return self:_get_entries_view():ready()
+end
+
+---OnChange handler.
+view.on_change = function(self)
+  self:_get_entries_view():on_change()
+end
+
+---Open menu
+---@param ctx cmp.Context
+---@param sources cmp.Source[]
+view.open = function(self, ctx, sources)
+  local source_group_map = {}
+  for _, s in ipairs(sources) do
+    local group_index = s:get_config().group_index or 0
+    if not source_group_map[group_index] then
+      source_group_map[group_index] = {}
+    end
+    table.insert(source_group_map[group_index], s)
+  end
+
+  local group_indexes = vim.tbl_keys(source_group_map)
+  table.sort(group_indexes, function(a, b)
+    return a ~= b and (a < b) or nil
+  end)
+
+  local entries = {}
+  for _, group_index in ipairs(group_indexes) do
+    local source_group = source_group_map[group_index] or {}
+
+    -- check the source triggered by character
+    local has_triggered_by_symbol_source = false
+    for _, s in ipairs(source_group) do
+      if #s:get_entries(ctx) > 0 then
+        if s.is_triggered_by_symbol then
+          has_triggered_by_symbol_source = true
+          break
+        end
+      end
+    end
+
+    -- create filtered entries.
+    local offset = ctx.cursor.col
+    for i, s in ipairs(source_group) do
+      if s.offset <= offset then
+        if not has_triggered_by_symbol_source or s.is_triggered_by_symbol then
+          -- source order priority bonus.
+          local priority = s:get_config().priority or ((#source_group - (i - 1)) * config.get().sorting.priority_weight)
+
+          for _, e in ipairs(s:get_entries(ctx)) do
+            e.score = e.score + priority
+            table.insert(entries, e)
+            offset = math.min(offset, e:get_offset())
+          end
+        end
+      end
+    end
+
+    -- sort.
+    local comparetors = config.get().sorting.comparators
+    table.sort(entries, function(e1, e2)
+      for _, fn in ipairs(comparetors) do
+        local diff = fn(e1, e2)
+        if diff ~= nil then
+          return diff
+        end
+      end
+    end)
+
+    -- open
+    if #entries > 0 then
+      self:_get_entries_view():open(offset, entries)
+      break
+    end
+  end
+
+  -- close.
+  if #entries == 0 then
+    self:close()
+  end
+end
+
+---Close menu
+view.close = function(self)
+  self:_get_entries_view():close()
+  self.docs_view:close()
+  self.ghost_text_view:hide()
+end
+
+---Abort menu
+view.abort = function(self)
+  self:_get_entries_view():abort()
+  self.docs_view:close()
+  self.ghost_text_view:hide()
+end
+
+---Return the view is visible or not.
+---@return boolean
+view.visible = function(self)
+  return self:_get_entries_view():visible()
+end
+
+---Scroll documentation window if possible.
+---@param delta number
+view.scroll_docs = function(self, delta)
+  self.docs_view:scroll(delta)
+end
+
+---Select prev menu item.
+---@param option cmp.SelectOption
+view.select_next_item = function(self, option)
+  self:_get_entries_view():select_next_item(option)
+end
+
+---Select prev menu item.
+---@param option cmp.SelectOption
+view.select_prev_item = function(self, option)
+  self:_get_entries_view():select_prev_item(option)
+end
+
+---Get first entry
+---@param self cmp.Entry|nil
+view.get_first_entry = function(self)
+  return self:_get_entries_view():get_first_entry()
+end
+
+---Get current selected entry
+---@return cmp.Entry|nil
+view.get_selected_entry = function(self)
+  return self:_get_entries_view():get_selected_entry()
+end
+
+---Get current active entry
+---@return cmp.Entry|nil
+view.get_active_entry = function(self)
+  return self:_get_entries_view():get_active_entry()
+end
+
+---Return current configured entries_view
+---@return cmp.CustomEntriesView|cmp.NativeEntriesView
+view._get_entries_view = function(self)
+  local c = config.get()
+  self.native_entries_view.event:clear()
+  self.custom_entries_view.event:clear()
+
+  if c.experimental.native_menu then
+    self.native_entries_view.event:on('change', function()
+      self:on_entry_change()
+    end)
+    return self.native_entries_view
+  else
+    self.custom_entries_view.event:on('change', function()
+      self:on_entry_change()
+    end)
+    return self.custom_entries_view
+  end
+end
+
+---On entry change
+view.on_entry_change = async.throttle(
+  vim.schedule_wrap(function(self)
+    if not self:visible() then
+      return
+    end
+    local e = self:get_selected_entry()
+    if e then
+      for _, c in ipairs(config.get().confirmation.get_commit_characters(e:get_commit_characters())) do
+        keymap.listen('i', c, function(...)
+          self.event:emit('keymap', ...)
+        end)
+      end
+      e:resolve(vim.schedule_wrap(self.resolve_dedup(function()
+        if not self:visible() then
+          return
+        end
+        self.docs_view:open(e, self:_get_entries_view():info())
+      end)))
+    else
+      self.docs_view:close()
+    end
+
+    e = e or self:get_first_entry()
+    if e then
+      self.ghost_text_view:show(e)
+    else
+      self.ghost_text_view:hide()
+    end
+  end),
+  20
+)
+
+return view

bundle/nvim-cmp/lua/cmp/vim_source.lua

@@ -0,0 +1,53 @@
+local misc = require('cmp.utils.misc')
+
+local vim_source = {}
+
+---@param id number
+---@param args any[]
+vim_source.on_callback = function(id, args)
+  if vim_source.to_callback.callbacks[id] then
+    vim_source.to_callback.callbacks[id](unpack(args))
+  end
+end
+
+---@param callback function
+---@return number
+vim_source.to_callback = setmetatable({
+  callbacks = {},
+}, {
+  __call = function(self, callback)
+    local id = misc.id('cmp.vim_source.to_callback')
+    self.callbacks[id] = function(...)
+      callback(...)
+      self.callbacks[id] = nil
+    end
+    return id
+  end,
+})
+
+---Convert to serializable args.
+---@param args any[]
+vim_source.to_args = function(args)
+  for i, arg in ipairs(args) do
+    if type(arg) == 'function' then
+      args[i] = vim_source.to_callback(arg)
+    end
+  end
+  return args
+end
+
+---@param bridge_id number
+---@param methods string[]
+vim_source.new = function(bridge_id, methods)
+  local self = {}
+  for _, method in ipairs(methods) do
+    self[method] = (function(m)
+      return function(_, ...)
+        return vim.fn['cmp#_method'](bridge_id, m, vim_source.to_args({ ... }))
+      end
+    end)(method)
+  end
+  return self
+end
+
+return vim_source

bundle/nvim-cmp/plugin/cmp.lua

@@ -0,0 +1,127 @@
+if vim.g.loaded_cmp then
+  return
+end
+vim.g.loaded_cmp = true
+
+local api = require "cmp.utils.api"
+local misc = require('cmp.utils.misc')
+local config = require('cmp.config')
+local highlight = require('cmp.utils.highlight')
+
+-- TODO: https://github.com/neovim/neovim/pull/14661
+vim.cmd [[
+  augroup ___cmp___
+    autocmd!
+    autocmd InsertEnter * lua require'cmp.utils.autocmd'.emit('InsertEnter')
+    autocmd InsertLeave * lua require'cmp.utils.autocmd'.emit('InsertLeave')
+    autocmd TextChangedI,TextChangedP * lua require'cmp.utils.autocmd'.emit('TextChanged')
+    autocmd CursorMovedI * lua require'cmp.utils.autocmd'.emit('CursorMoved')
+    autocmd CompleteChanged * lua require'cmp.utils.autocmd'.emit('CompleteChanged')
+    autocmd CompleteDone * lua require'cmp.utils.autocmd'.emit('CompleteDone')
+    autocmd ColorScheme * call v:lua.cmp.plugin.colorscheme()
+    autocmd CmdlineEnter * call v:lua.cmp.plugin.cmdline.enter()
+  augroup END
+]]
+
+misc.set(_G, { 'cmp', 'plugin', 'cmdline', 'enter' }, function()
+  if config.get().experimental.native_menu then
+    return
+  end
+  if vim.fn.expand('<afile>')~= '=' then
+    vim.schedule(function()
+      if api.is_cmdline_mode() then
+        vim.cmd [[
+          augroup cmp-cmdline
+            autocmd!
+            autocmd CmdlineChanged * lua require'cmp.utils.autocmd'.emit('TextChanged')
+            autocmd CmdlineLeave * call v:lua.cmp.plugin.cmdline.leave()
+          augroup END
+        ]]
+        require('cmp.utils.autocmd').emit('CmdlineEnter')
+      end
+    end)
+  end
+end)
+
+misc.set(_G, { 'cmp', 'plugin', 'cmdline', 'leave' }, function()
+  if vim.fn.expand('<afile>') ~= '=' then
+    vim.cmd [[
+      augroup cmp-cmdline
+        autocmd!
+      augroup END
+    ]]
+    require('cmp.utils.autocmd').emit('CmdlineLeave')
+  end
+end)
+
+misc.set(_G, { 'cmp', 'plugin', 'colorscheme' }, function()
+  highlight.inherit('CmpItemAbbrDefault', 'Pmenu', {
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+  highlight.inherit('CmpItemAbbrDeprecatedDefault', 'Comment', {
+    gui = 'NONE',
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+  highlight.inherit('CmpItemAbbrMatchDefault', 'Pmenu', {
+    gui = 'NONE',
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+  highlight.inherit('CmpItemAbbrMatchFuzzyDefault', 'Pmenu', {
+    gui = 'NONE',
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+  highlight.inherit('CmpItemKindDefault', 'Special', {
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+  highlight.inherit('CmpItemMenuDefault', 'Pmenu', {
+    guibg = 'NONE',
+    ctermbg = 'NONE',
+  })
+end)
+_G.cmp.plugin.colorscheme()
+
+if vim.fn.hlexists('CmpItemAbbr') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemAbbr CmpItemAbbrDefault]]
+end
+
+if vim.fn.hlexists('CmpItemAbbrDeprecated') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemAbbrDeprecated CmpItemAbbrDeprecatedDefault]]
+end
+
+if vim.fn.hlexists('CmpItemAbbrMatch') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemAbbrMatch CmpItemAbbrMatchDefault]]
+end
+
+if vim.fn.hlexists('CmpItemAbbrMatchFuzzy') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemAbbrMatchFuzzy CmpItemAbbrMatchFuzzyDefault]]
+end
+
+if vim.fn.hlexists('CmpItemKind') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemKind CmpItemKindDefault]]
+end
+
+if vim.fn.hlexists('CmpItemMenu') ~= 1 then
+  vim.cmd [[highlight! default link CmpItemMenu CmpItemMenuDefault]]
+end
+
+vim.cmd [[command! CmpStatus lua require('cmp').status()]]
+
+vim.cmd [[doautocmd <nomodeline> User cmp#ready]]
+
+if vim.on_key then
+  vim.on_key(function(keys)
+    if keys == vim.api.nvim_replace_termcodes('<C-c>', true, true, true) then
+      vim.schedule(function()
+        if not api.is_suitable_mode() then
+          require('cmp.utils.autocmd').emit('InsertLeave')
+        end
+      end)
+    end
+  end, vim.api.nvim_create_namespace('cmp.plugin'))
+end
+