neovim: migrate plugin manager from paq to packer

1 files changed, 799 insertions, 0 deletions

diff --git a/.config/nvim/lua/plugins.lua b/.config/nvim/lua/plugins.lua
new file mode 100644
index 0000000..07e350b
--- /dev/null
+++ b/.config/nvim/lua/plugins.lua
@@ -0,0 +1,799 @@
+vim.cmd.packadd('packer.nvim')
+local packer = require('packer')
+
+-- Plugins {{{1
+packer.startup(function(use)
+   -- Plugin management {{{2
+   use {
+      'wbthomason/packer.nvim',
+      opt = true,
+   }
+   -- Libraries {{{2
+   -- telescope.nvim depends on it.
+   use {
+      'nvim-lua/plenary.nvim',
+   }
+   -- Text editing {{{2
+   -- IME {{{3
+   -- SKK (Simple Kana to Kanji conversion program) for Vim.
+   use {
+      'vim-skk/eskk.vim',
+      config = function()
+         local my_env = require('my_env')
+
+         vim.g['eskk#dictionary'] = {
+            path = my_env.skk_dir .. '/jisyo',
+            sorted = false,
+            encoding = 'utf-8',
+         }
+
+         vim.g['eskk#large_dictionary'] = {
+            path = my_env.skk_dir .. '/jisyo.L',
+            sorted = true,
+            encoding = 'euc-jp',
+         }
+
+         vim.g['eskk#backup_dictionary'] = vim.g['eskk#dictionary'].path .. '.bak'
+
+         -- NOTE:
+         -- Boolean values are not accepted because eskk#utils#set_default() checks types.
+         vim.g['eskk#enable_completion'] = 0
+         vim.g['eskk#egg_like_newline'] = 1
+
+         -- Change default markers because they are EAW (East Asian Width) characters.
+         vim.g['eskk#marker_henkan'] = '[!]'
+         vim.g['eskk#marker_okuri'] = '-'
+         vim.g['eskk#marker_henkan_select'] = '[#]'
+         vim.g['eskk#marker_jisyo_touroku'] = '[?]'
+
+         vim.cmd([=[
+         function! My_eskk_initialize_pre()
+            for [orgtable, mode] in [['rom_to_hira', 'hira'], ['rom_to_kata', 'kata']]
+               let t = eskk#table#new(orgtable . '*', orgtable)
+               call t.add_map('z ', '　')
+               call t.add_map('0.', '0.')
+               call t.add_map('1.', '1.')
+               call t.add_map('2.', '2.')
+               call t.add_map('3.', '3.')
+               call t.add_map('4.', '4.')
+               call t.add_map('5.', '5.')
+               call t.add_map('6.', '6.')
+               call t.add_map('7.', '7.')
+               call t.add_map('8.', '8.')
+               call t.add_map('9.', '9.')
+               call t.add_map(':', ':')
+               call t.add_map('z:', '：')
+               " Workaround: 'zl' does not work as 'l' key leaves from SKK mode.
+               call t.add_map('zL', '→')
+               call eskk#register_mode_table(mode, t)
+            endfor
+         endfunction
+
+         autocmd Vimrc User eskk-initialize-pre call My_eskk_initialize_pre()
+
+         function! My_eskk_initialize_post()
+            " I don't use hankata mode for now.
+            EskkUnmap -type=mode:hira:toggle-hankata
+            EskkUnmap -type=mode:kata:toggle-hankata
+
+            " I don't use abbrev mode for now.
+            EskkUnmap -type=mode:hira:to-abbrev
+            EskkUnmap -type=mode:kata:to-abbrev
+
+            " I don't use ascii mode for now.
+            EskkUnmap -type=mode:hira:to-ascii
+            EskkUnmap -type=mode:kata:to-ascii
+
+            " Instead, l key disable SKK input.
+            EskkMap -type=disable l
+
+            " I type <C-m> for new line.
+            EskkMap -type=kakutei <C-m>
+
+            map!  jk  <Plug>(eskk:disable)<ESC>
+
+            " Custom highlight for henkan markers.
+            syntax match skkMarker '\[[!#?]\]'
+            hi link skkMarker Special
+         endfunction
+
+         autocmd Vimrc User eskk-initialize-post call My_eskk_initialize_post()
+         ]=])
+      end,
+   }
+   -- Operators {{{3
+   -- Support for user-defined operators.
+   use {
+      'kana/vim-operator-user',
+   }
+   -- Extract expression and make assingment statement.
+   use {
+      'tek/vim-operator-assign',
+   }
+   -- Replace text without updating registers.
+   use {
+      'kana/vim-operator-replace',
+      config = function()
+         vim.keymap.set('n', '<C-p>', '<Plug>(operator-replace)')
+         vim.keymap.set('o', '<C-p>', '<Plug>(operator-replace)')
+         vim.keymap.set('x', '<C-p>', '<Plug>(operator-replace)')
+      end,
+   }
+   -- Reverse text.
+   use {
+      'tyru/operator-reverse.vim',
+   }
+   -- Search in a specific region.
+   use {
+      'osyo-manga/vim-operator-search',
+      config = function()
+         -- Note: m/ is the prefix of comment out.
+         vim.keymap.set('n', 'm?', '<Plug>(operator-search)')
+         vim.keymap.set('o', 'm?', '<Plug>(operator-search)')
+         vim.keymap.set('x', 'm?', '<Plug>(operator-search)')
+      end,
+   }
+   -- Shiffle text.
+   use {
+      'pekepeke/vim-operator-shuffle',
+   }
+   -- Sort text characterwise and linewise.
+   use {
+      'emonkak/vim-operator-sort',
+   }
+   -- Super surround.
+   use {
+      'machakann/vim-sandwich',
+      config = function()
+         vim.fn['operator#sandwich#set']('add', 'all', 'highlight', 2)
+         vim.fn['operator#sandwich#set']('delete', 'all', 'highlight', 0)
+         vim.fn['operator#sandwich#set']('replace', 'all', 'highlight', 2)
+
+         do
+            local rs = vim.fn['sandwich#get_recipes']()
+
+            rs[#rs+1] = {
+               buns = {'「', '」'},
+               input = {'j[', 'j]'},
+            }
+            rs[#rs+1] = {
+               buns = {'『', '』'},
+               input = {'j{', 'j}'},
+            }
+            rs[#rs+1] = {
+               buns = {'【', '】'},
+               input = {'j(', 'j)'},
+            }
+
+            vim.g['sandwich#recipes'] = rs
+         end
+      end,
+   }
+   -- Non-operators {{{3
+   -- Comment out.
+   use {
+      'tyru/caw.vim',
+      opt = true,
+      setup = function()
+         vim.g.caw_no_default_keymappings = true
+      end,
+      config = function()
+         vim.keymap.set('n', 'm//', '<Plug>(caw:hatpos:toggle)')
+         vim.keymap.set('x', 'm//', '<Plug>(caw:hatpos:toggle)')
+         vim.keymap.set('n', 'm/w', '<Plug>(caw:wrap:comment)')
+         vim.keymap.set('x', 'm/w', '<Plug>(caw:wrap:comment)')
+         vim.keymap.set('n', 'm/W', '<Plug>(caw:wrap:uncomment)')
+         vim.keymap.set('x', 'm/W', '<Plug>(caw:wrap:uncomment)')
+         vim.keymap.set('n', 'm/b', '<Plug>(caw:box:comment)')
+         vim.keymap.set('x', 'm/b', '<Plug>(caw:box:comment)')
+      end,
+   }
+   -- Align text.
+   use {
+      'junegunn/vim-easy-align',
+      config = function()
+         vim.keymap.set('n', '=', '<Plug>(EasyAlign)')
+         vim.keymap.set('x', '=', '<Plug>(EasyAlign)')
+      end,
+   }
+   -- Text objects {{{2
+   -- Support for user-defined text objects.
+   use {
+      'kana/vim-textobj-user',
+   }
+   -- Text object for blockwise.
+   use {
+      'osyo-manga/vim-textobj-blockwise',
+   }
+   -- Text object for comment.
+   use {
+      'thinca/vim-textobj-comment',
+   }
+   -- Text object for continuous line.
+   use {
+      'rhysd/vim-textobj-continuous-line',
+      config = function()
+         local vimrc = require('vimrc')
+
+         vim.g.textobj_continuous_line_no_default_key_mappings = true
+
+         vim.keymap.set('o', 'aL', '<Plug>(textobj-continuous-cpp-a)')
+         vim.keymap.set('x', 'aL', '<Plug>(textobj-continuous-cpp-a)')
+         vim.keymap.set('o', 'iL', '<Plug>(textobj-continuous-cpp-i)')
+         vim.keymap.set('x', 'iL', '<Plug>(textobj-continuous-cpp-i)')
+
+         vimrc.autocmd('FileType', {
+            pattern = 'vim',
+            command = 'omap <buffer>  aL  <Plug>(textobj-continuous-vim-a)',
+         })
+         vimrc.autocmd('FileType', {
+            pattern = 'vim',
+            command = 'xmap <buffer>  aL  <Plug>(textobj-continuous-vim-a)',
+         })
+         vimrc.autocmd('FileType', {
+            pattern = 'vim',
+            command = 'omap <buffer>  iL  <Plug>(textobj-continuous-vim-i)',
+         })
+         vimrc.autocmd('FileType', {
+            pattern = 'vim',
+            command = 'xmap <buffer>  iL  <Plug>(textobj-continuous-vim-i)',
+         })
+      end,
+   }
+   -- Text object for function.
+   use {
+      'kana/vim-textobj-function',
+   }
+   -- Text object for indent.
+   use {
+      'kana/vim-textobj-indent',
+   }
+   -- Text object for last inserted text.
+   use {
+      'rhysd/vim-textobj-lastinserted',
+   }
+   -- Text object for last pasted text.
+   use {
+      'gilligan/textobj-lastpaste',
+      config = function()
+         vim.g.textobj_lastpaste_no_default_key_mappings = true
+
+         vim.keymap.set('o', 'iP', '<Plug>(textobj-lastpaste-i)')
+         vim.keymap.set('x', 'iP', '<Plug>(textobj-lastpaste-i)')
+         vim.keymap.set('o', 'aP', '<Plug>(textobj-lastpaste-a)')
+         vim.keymap.set('x', 'aP', '<Plug>(textobj-lastpaste-a)')
+      end,
+   }
+   -- Text object for last searched pattern.
+   use {
+      'kana/vim-textobj-lastpat',
+   }
+   -- Text object for line.
+   use {
+      'kana/vim-textobj-line',
+   }
+   -- Text object for parameter.
+   use {
+      'sgur/vim-textobj-parameter',
+   }
+   -- Text object for space.
+   use {
+      'saihoooooooo/vim-textobj-space',
+      opt = true,
+      setup = function()
+         vim.g.textobj_space_no_default_key_mappings = true
+      end,
+      config = function()
+         vim.keymap.set('o', 'a<Space>', '<Plug>(textobj-space-a)')
+         vim.keymap.set('x', 'a<Space>', '<Plug>(textobj-space-a)')
+         vim.keymap.set('o', 'i<Space>', '<Plug>(textobj-space-i)')
+         vim.keymap.set('x', 'i<Space>', '<Plug>(textobj-space-i)')
+      end,
+   }
+   -- Text object for syntax.
+   use {
+      'kana/vim-textobj-syntax',
+   }
+   -- Text object for URL.
+   use {
+      'mattn/vim-textobj-url',
+   }
+   -- Text object for words in words.
+   use {
+      'h1mesuke/textobj-wiw',
+      opt = true,
+      setup = function()
+         vim.g.textobj_wiw_no_default_key_mappings = true
+      end,
+      config = function()
+         vim.keymap.set('n', '<C-w>', '<Plug>(textobj-wiw-n)')
+         vim.keymap.set('o', '<C-w>', '<Plug>(textobj-wiw-n)')
+         vim.keymap.set('x', '<C-w>', '<Plug>(textobj-wiw-n)')
+         vim.keymap.set('n', 'g<C-w>', '<Plug>(textobj-wiw-p)')
+         vim.keymap.set('o', 'g<C-w>', '<Plug>(textobj-wiw-p)')
+         vim.keymap.set('x', 'g<C-w>', '<Plug>(textobj-wiw-p)')
+         vim.keymap.set('n', '<C-e>', '<Plug>(textobj-wiw-N)')
+         vim.keymap.set('o', '<C-e>', '<Plug>(textobj-wiw-N)')
+         vim.keymap.set('x', '<C-e>', '<Plug>(textobj-wiw-N)')
+         vim.keymap.set('n', 'g<C-e>', '<Plug>(textobj-wiw-P)')
+         vim.keymap.set('o', 'g<C-e>', '<Plug>(textobj-wiw-P)')
+         vim.keymap.set('x', 'g<C-e>', '<Plug>(textobj-wiw-P)')
+
+         vim.keymap.set('o', 'a<C-w>', '<Plug>(textobj-wiw-a)')
+         vim.keymap.set('x', 'a<C-w>', '<Plug>(textobj-wiw-a)')
+         vim.keymap.set('o', 'i<C-w>', '<Plug>(textobj-wiw-i)')
+         vim.keymap.set('x', 'i<C-w>', '<Plug>(textobj-wiw-i)')
+      end,
+   }
+   -- Search {{{2
+   -- Extend * and #.
+   use {
+      'haya14busa/vim-asterisk',
+      config = function()
+         vim.cmd([[
+         function! My_asterisk(ret, keeppos)
+            let g:asterisk#keeppos = a:keeppos
+            return a:ret
+         endfunction
+         ]])
+
+         -- Do not keep the relative cursor position.
+         vim.cmd([[
+         nmap <expr>  *  My_asterisk('<Plug>(asterisk-z*)', 0)
+         omap <expr>  *  My_asterisk('<Plug>(asterisk-z*)', 0)
+         xmap <expr>  *  My_asterisk('<Plug>(asterisk-z*)', 0)
+         nmap <expr>  g*  My_asterisk('<Plug>(asterisk-gz*)', 0)
+         omap <expr>  g*  My_asterisk('<Plug>(asterisk-gz*)', 0)
+         xmap <expr>  g*  My_asterisk('<Plug>(asterisk-gz*)', 0)
+         ]])
+
+         -- Keep the relative cursor position (use offset like /s+1).
+         -- Note: I fix the search direction in typing 'n' and 'N', so there is no
+         -- difference between '*' and '#'.
+         vim.cmd([[
+         nmap <expr>  #  My_asterisk('<Plug>(asterisk-z*)', 1)
+         omap <expr>  #  My_asterisk('<Plug>(asterisk-z*)', 1)
+         xmap <expr>  #  My_asterisk('<Plug>(asterisk-z*)', 1)
+         nmap <expr>  g#  My_asterisk('<Plug>(asterisk-gz*)', 1)
+         omap <expr>  g#  My_asterisk('<Plug>(asterisk-gz*)', 1)
+         xmap <expr>  g#  My_asterisk('<Plug>(asterisk-gz*)', 1)
+         ]])
+      end,
+   }
+   -- NOTE: it is a fork version of jremmen/vim-ripgrep
+   -- Integration with ripgrep, fast alternative of grep command.
+   use {
+      'nsfisis/vim-ripgrep',
+      config = function()
+         -- Workaround: do not open quickfix window.
+         -- exe g:rg_window_location 'copen'
+         vim.g.rg_window_location = 'silent! echo'
+         vim.g.rg_jump_to_first = true
+
+         vim.api.nvim_create_user_command(
+            'RG',
+            'Rg<bang> <args>',
+            {
+               bang = true,
+               bar = true,
+               nargs = '*',
+               complete = 'file',
+            }
+         )
+      end,
+   }
+   -- Files {{{2
+   -- Switch to related files.
+   use {
+      'kana/vim-altr',
+      config = function()
+         -- C/C++
+         vim.fn['altr#define']('%.c', '%.cpp', '%.cc', '%.h', '%.hh', '%.hpp')
+         -- Vim
+         vim.fn['altr#define']('autoload/%.vim', 'doc/%.txt', 'plugin/%.vim')
+
+         -- Go to File Alternative
+         vim.keymap.set('n', 'gfa', '<Plug>(altr-forward)')
+      end,
+   }
+   -- Filer for minimalists.
+   use {
+      'justinmk/vim-dirvish',
+   }
+   -- Appearance {{{2
+   -- Show highlight.
+   use {
+      'cocopon/colorswatch.vim',
+   }
+   -- Makes folding text cool.
+   use {
+      'LeafCage/foldCC.vim',
+      config = function()
+         vim.o.foldtext = 'FoldCCtext()'
+         vim.g.foldCCtext_head = 'repeat(">", v:foldlevel) . " "'
+      end,
+   }
+   -- Show indentation guide.
+   use {
+      'lukas-reineke/indent-blankline.nvim',
+      config = function()
+         require("indent_blankline").setup {
+            char_blankline = ' ',
+            show_first_indent_level = false,
+         }
+      end,
+   }
+   -- Highlight matched parentheses.
+   use {
+      'itchyny/vim-parenmatch',
+   }
+   -- Tree-sitter integration.
+   use {
+      'nvim-treesitter/nvim-treesitter',
+      config = function()
+         require('nvim-treesitter.configs').setup {
+            ensure_installed = 'all',
+            sync_install = false,
+            highlight = {
+               enable = true,
+               additional_vim_regex_highlighting = false,
+            },
+            --[[
+            incremental_selection = {
+               enable = true,
+               keymaps = {
+                  init_selection = 'TODO',
+                  node_incremental = 'TODO',
+                  scope_incremental = 'TODO',
+                  node_decremental = 'TODO',
+               },
+            },
+            --]]
+            indent = {
+               enable = false,
+            },
+            yati = {
+               enable = true,
+            },
+         }
+      end,
+   }
+   -- Tree-sitter debugging.
+   use {
+      'nvim-treesitter/playground',
+   }
+   -- Highlight specified words.
+   use {
+      't9md/vim-quickhl',
+      config = function()
+         -- TODO: CUI
+         vim.g.quickhl_manual_colors = {
+            'guifg=#101020 guibg=#8080c0 gui=bold',
+            'guifg=#101020 guibg=#80c080 gui=bold',
+            'guifg=#101020 guibg=#c08080 gui=bold',
+            'guifg=#101020 guibg=#80c0c0 gui=bold',
+            'guifg=#101020 guibg=#c0c080 gui=bold',
+            'guifg=#101020 guibg=#a0a0ff gui=bold',
+            'guifg=#101020 guibg=#a0ffa0 gui=bold',
+            'guifg=#101020 guibg=#ffa0a0 gui=bold',
+            'guifg=#101020 guibg=#a0ffff gui=bold',
+            'guifg=#101020 guibg=#ffffa0 gui=bold',
+         }
+
+         vim.keymap.set('n', '"', '<Plug>(quickhl-manual-this)')
+         vim.keymap.set('x', '"', '<Plug>(quickhl-manual-this)')
+         vim.keymap.set('n', '<C-c>', ':<C-u>nohlsearch <Bar> QuickhlManualReset<CR>', { silent=true })
+      end,
+   }
+   -- Yet another tree-sitter indentation.
+   -- TODO: uninstall it once the official nvim-treesitter provides sane indentation.
+   use {
+      'yioneko/nvim-yati',
+   }
+   -- Filetypes {{{2
+   -- Faster replacement for bundled filetype.vim
+   use {
+      'nathom/filetype.nvim',
+      config = function()
+         require('filetype').setup({
+            overrides = {
+               -- My settings here
+            },
+         })
+      end,
+   }
+   -- C/C++
+   use {
+      'rhysd/vim-clang-format',
+      config = function()
+         local vimrc = require('vimrc')
+
+         vim.g['clang_format#auto_format'] = true
+
+         vimrc.autocmd('FileType', {
+            pattern = {'javascript', 'typescript'},
+            command = 'ClangFormatAutoDisable',
+         })
+      end,
+   }
+   -- HTML/CSS
+   use {
+      'mattn/emmet-vim',
+      opt = true,
+      setup = function()
+         local vimrc = require('vimrc')
+
+         vim.g.user_emmet_install_global = false
+         vimrc.autocmd('FileType', {
+            pattern = {'html', 'css'},
+            command = 'EmmetInstall',
+         })
+      end,
+   }
+   -- Rust
+   use {
+      'rust-lang/rust.vim',
+      config = function()
+         vim.g.rustfmt_autosave = true
+      end,
+   }
+   -- QoL {{{2
+   -- Capture the output of a command.
+   use {
+      'tyru/capture.vim',
+   }
+   -- Write git commit message.
+   use {
+      'rhysd/committia.vim',
+      config = function()
+         vim.g.committia_hooks = {
+            edit_open = function(_info)
+               vim.wo.spell = true
+            end,
+         }
+      end,
+   }
+   -- Neovim clone of EasyMotion
+   use {
+      'phaazon/hop.nvim',
+      config = function()
+         local vimrc = require('vimrc')
+
+         require('hop').setup {
+            keys = 'asdfghweryuiocvbnmjkl;',
+         }
+
+         -- Emulate `g:EasyMotion_startofline = 0` in hop.nvim.
+         function vimrc.map_callbacks.hop_jk(opts)
+            local hop = require('hop')
+            local jump_target = require('hop.jump_target')
+
+            local column = vim.fn.col('.')
+            local match
+            if column == 1 then
+               match = function(_)
+                  return 0, 1, false
+               end
+            else
+               local pat = vim.regex('\\%' .. column .. 'c')
+               match = function(s)
+                  return pat:match_str(s)
+               end
+            end
+            setmetatable(opts, { __index = hop.opts })
+            hop.hint_with(
+               jump_target.jump_targets_by_scanning_lines({
+                  oneshot = true,
+                  match = match,
+               }),
+               opts
+            )
+         end
+
+         vim.keymap.set('', '<Plug>(hop-f)', "<Cmd>lua require('hop').hint_char1({ direction = require('hop.hint').HintDirection.AFTER_CURSOR,  current_line_only = true })<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-F)', "<Cmd>lua require('hop').hint_char1({ direction = require('hop.hint').HintDirection.BEFORE_CURSOR, current_line_only = true })<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-t)', "<Cmd>lua require('hop').hint_char1({ direction = require('hop.hint').HintDirection.AFTER_CURSOR,  current_line_only = true })<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-T)', "<Cmd>lua require('hop').hint_char1({ direction = require('hop.hint').HintDirection.BEFORE_CURSOR, current_line_only = true })<CR>", { silent=true })
+
+         vim.keymap.set('', '<Plug>(hop-s2)', "<Cmd>lua require('hop').hint_char2()<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-n)', "<Cmd>lua require('hop').hint_patterns({ direction = require('hop.hint').HintDirection.AFTER_CURSOR  }, vim.fn.getreg('/'))<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-N)', "<Cmd>lua require('hop').hint_patterns({ direction = require('hop.hint').HintDirection.BEFORE_CURSOR }, vim.fn.getreg('/'))<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-j)', "<Cmd>lua vimrc.map_callbacks.hop_jk({ direction = require('hop.hint').HintDirection.AFTER_CURSOR  })<CR>", { silent=true })
+         vim.keymap.set('', '<Plug>(hop-k)', "<Cmd>lua vimrc.map_callbacks.hop_jk({ direction = require('hop.hint').HintDirection.BEFORE_CURSOR })<CR>", { silent=true })
+
+         vim.keymap.set('n', 'f', '<Plug>(hop-f)')
+         vim.keymap.set('o', 'f', '<Plug>(hop-f)')
+         vim.keymap.set('x', 'f', '<Plug>(hop-f)')
+         vim.keymap.set('n', 'F', '<Plug>(hop-F)')
+         vim.keymap.set('o', 'F', '<Plug>(hop-F)')
+         vim.keymap.set('x', 'F', '<Plug>(hop-F)')
+         vim.keymap.set('o', 't', '<Plug>(hop-t)')
+         vim.keymap.set('x', 't', '<Plug>(hop-t)')
+         vim.keymap.set('o', 'T', '<Plug>(hop-T)')
+         vim.keymap.set('x', 'T', '<Plug>(hop-T)')
+
+         -- Note: Don't use the following key sequences! It is used 'vim-sandwich'.
+         --  * sa
+         --  * sd
+         --  * sr
+         vim.keymap.set('n', 'ss', '<Plug>(hop-s2)')
+         vim.keymap.set('o', 'ss', '<Plug>(hop-s2)')
+         vim.keymap.set('x', 'ss', '<Plug>(hop-s2)')
+         vim.keymap.set('n', 'sn', '<Plug>(hop-n)')
+         vim.keymap.set('o', 'sn', '<Plug>(hop-n)')
+         vim.keymap.set('x', 'sn', '<Plug>(hop-n)')
+         vim.keymap.set('n', 'sN', '<Plug>(hop-N)')
+         vim.keymap.set('o', 'sN', '<Plug>(hop-N)')
+         vim.keymap.set('x', 'sN', '<Plug>(hop-N)')
+         vim.keymap.set('n', 'sj', '<Plug>(hop-j)')
+         vim.keymap.set('o', 'sj', '<Plug>(hop-j)')
+         vim.keymap.set('x', 'sj', '<Plug>(hop-j)')
+         vim.keymap.set('n', 'sk', '<Plug>(hop-k)')
+         vim.keymap.set('o', 'sk', '<Plug>(hop-k)')
+         vim.keymap.set('x', 'sk', '<Plug>(hop-k)')
+      end,
+   }
+   -- Integration with EditorConfig (https://editorconfig.org)
+   use {
+      'editorconfig/editorconfig-vim',
+   }
+   -- Extend J.
+   use {
+      'osyo-manga/vim-jplus',
+      config = function()
+         vim.g['jplus#input_config'] = {
+            __DEFAULT__ = { delimiter_format = ' %d ' },
+            __EMPTY__ = { delimiter_format = '' },
+            [' '] = { delimiter_format = ' ' },
+            [','] = { delimiter_format = '%d ' },
+            [':'] = { delimiter_format = '%d ' },
+            [';'] = { delimiter_format = '%d ' },
+            l = { delimiter_format = '' },
+            L = { delimiter_format = '' },
+         }
+
+         vim.keymap.set('n', 'J', '<Plug>(jplus-getchar)')
+         vim.keymap.set('x', 'J', '<Plug>(jplus-getchar)')
+         vim.keymap.set('n', 'gJ', '<Plug>(jplus-input)')
+         vim.keymap.set('x', 'gJ', '<Plug>(jplus-input)')
+      end,
+   }
+   -- Improve behaviors of I, A and gI in Blockwise-Visual mode.
+   use {
+      'kana/vim-niceblock',
+      config = function()
+         vim.keymap.set('x', 'I', '<Plug>(niceblock-I)')
+         vim.keymap.set('x', 'gI', '<Plug>(niceblock-gI)')
+         vim.keymap.set('x', 'A', '<Plug>(niceblock-A)')
+      end,
+   }
+   -- Edit QuickFix and reflect to original buffers.
+   use {
+      'thinca/vim-qfreplace',
+      config = function()
+         vim.keymap.set('n', 'br', ':<C-u>Qfreplace SmartOpen<CR>', { silent=true })
+      end,
+   }
+   -- Run anything.
+   use {
+      'thinca/vim-quickrun',
+      config = function()
+         vim.g.quickrun_config = {
+            cpp = {
+               cmdopt = '--std=c++17 -Wall -Wextra',
+            },
+            d = {
+               exec = 'dub run',
+            },
+            haskell = {
+               exec = {'stack build', 'stack exec %{matchstr(globpath(".,..,../..,../../..", "*.cabal"), "\\w\\+\\ze\\.cabal")}'},
+            },
+            python = {
+               command = 'python3',
+            },
+         }
+
+         vim.keymap.set('n', 'BB', '<Plug>(quickrun)')
+         vim.keymap.set('x', 'BB', '<Plug>(quickrun)')
+      end,
+   }
+   -- Extend dot-repeat.
+   use {
+      'tpope/vim-repeat',
+      config = function()
+         vim.keymap.set('n', 'U', '<Plug>(RepeatRedo)')
+         -- Autoload vim-repeat immediately in order to make <Plug>(RepeatRedo) available.
+         -- repeat#setreg() does nothing here.
+         vim.fn['repeat#setreg']('', '')
+
+         -- Make them repeatable with vim-repeat.
+         vim.cmd([[
+         nnoremap <silent>  <Plug>(my-insert-blank-lines-after)
+            \ :<C-u>call v:lua.vimrc.map_callbacks.insert_blank_line(0)<Bar>
+            \ silent! call repeat#set("\<Lt>Plug>(my-insert-blank-lines-after)")<CR>
+         nnoremap <silent>  <Plug>(my-insert-blank-lines-before)
+            \ :<C-u>call v:lua.vimrc.map_callbacks.insert_blank_line(1)<Bar>
+            \ silent! call repeat#set("\<Lt>Plug>(my-insert-blank-lines-before)")<CR>
+         ]])
+      end,
+   }
+   -- Introduce user-defined mode.
+   use {
+      'kana/vim-submode',
+      config = function()
+         -- Global settings {{{3
+         vim.g.submode_always_show_submode = true
+         vim.g.submode_keyseqs_to_leave = { '<C-c>', '<ESC>' }
+         vim.g.submode_keep_leaving_key = true
+
+         -- yankround {{{3
+         vim.fn['submode#enter_with']('YankRound', 'nv', 'rs', 'gp', '<Plug>(yankround-p)')
+         vim.fn['submode#enter_with']('YankRound', 'nv', 'rs', 'gP', '<Plug>(yankround-P)')
+         vim.fn['submode#map']('YankRound', 'nv', 'rs', 'p', '<Plug>(yankround-prev)')
+         vim.fn['submode#map']('YankRound', 'nv', 'rs', 'P', '<Plug>(yankround-next)')
+
+         -- swap {{{3
+         vim.fn['submode#enter_with']('Swap', 'n', 'r', 'g>', '<Plug>(swap-next)')
+         vim.fn['submode#map']('Swap', 'n', 'r', '<', '<Plug>(swap-prev)')
+         vim.fn['submode#enter_with']('Swap', 'n', 'r', 'g<', '<Plug>(swap-prev)')
+         vim.fn['submode#map']('Swap', 'n', 'r', '>', '<Plug>(swap-next)')
+
+         -- Resizing a window (height) {{{3
+         vim.fn['submode#enter_with']('WinResizeH', 'n', '', 'trh')
+         vim.fn['submode#enter_with']('WinResizeH', 'n', '', 'trh')
+         vim.fn['submode#map']('WinResizeH', 'n', '', '+', '<C-w>+')
+         vim.fn['submode#map']('WinResizeH', 'n', '', '-', '<C-w>-')
+
+         -- Resizing a window (width) {{{3
+         vim.fn['submode#enter_with']('WinResizeW', 'n', '', 'trw')
+         vim.fn['submode#enter_with']('WinResizeW', 'n', '', 'trw')
+         vim.fn['submode#map']('WinResizeW', 'n', '', '+', '<C-w>>')
+         vim.fn['submode#map']('WinResizeW', 'n', '', '-', '<C-w><Lt>')
+
+         -- Super undo/redo {{{3
+         vim.fn['submode#enter_with']('Undo/Redo', 'n', '', 'gu', 'g-')
+         vim.fn['submode#map']('Undo/Redo', 'n', '', 'u', 'g-')
+         vim.fn['submode#enter_with']('Undo/Redo', 'n', '', 'gU', 'g+')
+         vim.fn['submode#map']('Undo/Redo', 'n', '', 'U', 'g+')
+         -- }}}
+      end,
+   }
+   -- Swap arguments.
+   use {
+      'machakann/vim-swap',
+      opt = true,
+      setup = function()
+         vim.g.swap_no_default_key_mappings = true
+      end,
+   }
+   -- Fuzzy finder.
+   use {
+      'nvim-telescope/telescope.nvim',
+   }
+   -- Adjust window size.
+   use {
+      'rhysd/vim-window-adjuster',
+      config = function()
+         vim.keymap.set('n', 'tRw', '<Cmd>AdjustScreenWidth<CR>')
+         vim.keymap.set('n', 'tRh', '<Cmd>AdjustScreenHeight<CR>')
+         vim.keymap.set('n', 'tRr', ':<C-u>AdjustScreenWidth <Bar> AdjustScreenHeight<CR>', { silent=true })
+      end,
+   }
+   -- Remember yank history and paste them.
+   use {
+      'LeafCage/yankround.vim',
+      config = function()
+         local my_env = require('my_env')
+
+         vim.g.yankround_dir = my_env.yankround_dir
+         vim.g.yankround_use_region_hl = true
+      end,
+   }
+   -- }}}
+end)
+-- }}}
+
+return {
+   compile = packer.compile,
+   sync = packer.sync,
+}