diff --git a/.config/nvim/after/ftplugin/css.lua b/.config/nvim/after/ftplugin/css.lua
index d89ac0f..71af6f1 100644
--- a/.config/nvim/after/ftplugin/css.lua
+++ b/.config/nvim/after/ftplugin/css.lua
@@ -1,4 +1,6 @@
+local optl = vim.opt_local
+
 -- options
-vim.opt.tabstop = 2
-vim.opt.shiftwidth = 2
-vim.opt.expandtab = true
+optl.tabstop = 2
+optl.shiftwidth = 2
+optl.expandtab = true
diff --git a/.config/nvim/after/ftplugin/lua.lua b/.config/nvim/after/ftplugin/lua.lua
index 2279bfa..a640189 100644
--- a/.config/nvim/after/ftplugin/lua.lua
+++ b/.config/nvim/after/ftplugin/lua.lua
@@ -1,7 +1,9 @@
+local optl = vim.opt_local
+
 -- options
-vim.opt.tabstop = 2
-vim.opt.shiftwidth = 2
-vim.opt.expandtab = true
+optl.tabstop = 2
+optl.shiftwidth = 2
+optl.expandtab = true
 
 -- treesitter
 vim.treesitter.start()
diff --git a/.config/nvim/after/ftplugin/markdown.lua b/.config/nvim/after/ftplugin/markdown.lua
index 265f6a0..22e5309 100644
--- a/.config/nvim/after/ftplugin/markdown.lua
+++ b/.config/nvim/after/ftplugin/markdown.lua
@@ -1,9 +1,11 @@
+local optl = vim.opt_local
+
 -- options
-vim.bo.tabstop = 2
-vim.bo.shiftwidth = 2
-vim.bo.expandtab = true
+optl.tabstop = 2
+optl.shiftwidth = 2
+optl.expandtab = true
 
 -- keymaps
 local keymap_set = vim.keymap.set
-keymap_set("n", "]h", "/\\_^#.*\\ze\\n\\{2}<esc>", {})
-keymap_set("n", "[h", "?\\_^#.*\\ze\\n\\{2}<esc>", {})
+keymap_set("n", "]h", "/\\_^#.*\\ze\\n\\{2}<esc>")
+keymap_set("n", "[h", "?\\_^#.*\\ze\\n\\{2}<esc>")
diff --git a/.config/nvim/after/syntax/markdown.vim b/.config/nvim/after/syntax/markdown.vim
index 9b9dd29..1f2e771 100644
--- a/.config/nvim/after/syntax/markdown.vim
+++ b/.config/nvim/after/syntax/markdown.vim
@@ -7,7 +7,7 @@ syntax clear markdownYamlHead
 syntax region markdownYamlHead start="^-\{3}\n\S" end="\S\n\%(-\|\.\)\{3}$" keepend contains=@markdownYamlTop,@Spell
 
 " citation
-syntax match markdownPCite "\^\@<!\[[^\[\]]\{-}-\{0,1}@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\_.\{-}\]" contains=@markdownInline,markdownCiteKey
+syntax match markdownPCite "\^\@<!\[\_[^\[\]]\{-}-\{0,1}@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\_.\{-}\]" contains=@markdownInline,markdownCiteKey
 syn match markdownICite "@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\s\[.\{-1,}\]" contains=markdownCiteKey,@Spell display
 syn match markdownCiteKey /\(-\=@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\)/ containedin=markdownPCite,markdownICite contains=@NoSpell display
 
@@ -17,5 +17,3 @@ hi def link markdownCiteKey markdownLabel
 hi def link markdownLabel Label
 
 let b:current_syntax = "markdown"
-
-" vim:set sw=2:
diff --git a/.config/nvim/colors/basic.lua b/.config/nvim/colors/basic.lua
index 7201e92..8a63ed3 100644
--- a/.config/nvim/colors/basic.lua
+++ b/.config/nvim/colors/basic.lua
@@ -276,7 +276,7 @@ local syntax_statement_h = { ctermfg = C.orange.cterm, fg = C.orange.gui }
 local syntax_preproc_h = { ctermfg = C.magenta.cterm, fg = C.magenta.gui }
 local syntax_type_h = { ctermfg = C.green.cterm, fg = C.green.gui }
 local syntax_special_h = { ctermfg = C.orange.cterm, fg = C.orange.gui }
-local syntax_underline_h = { ctermfg = C.blue.cterm, fg = C.blue.gui, underline = true }
+local syntax_underline_h = { underline = true }
 local syntax_ignore_h = { ctermfg = C.black.cterm, fg = C.black.gui }
 local syntax_error_h = { ctermfg = C.black.cterm, fg = C.black.gui, ctermbg = C.red.cterm, bg = C.red.gui }
 local syntax_warn_h = { ctermfg = C.black.cterm, fg = C.black.gui, ctermbg = C.orange.cterm, bg = C.orange.gui }
@@ -339,6 +339,9 @@ set_hl("markdownBoldDelimiter", markdown_delimiter_h)
 set_hl("markdownBoldItalicDelimiter", markdown_delimiter_h)
 set_hl("markdownStrikeDelimiter", markdown_delimiter_h)
 set_hl("markdownCodeDelimiter", markdown_delimiter_h)
+set_hl("markdownLinkTextDelimiter", markdown_delimiter_h)
+set_hl("markdownLinkDelimiter", markdown_delimiter_h)
+set_hl("markdownUrl", markdown_delimiter_h)
 
 set_hl("yamlBlockMappingKey", syntax_comment_h)
 set_hl("yamlPlainScalar", syntax_constant_h)
diff --git a/.config/nvim/init.lua b/.config/nvim/init.lua
index 56a4f08..84929ef 100644
--- a/.config/nvim/init.lua
+++ b/.config/nvim/init.lua
@@ -1,13 +1,14 @@
 local opt, api, cmd = vim.opt, vim.api, vim.cmd
 local fn, ui = vim.fn, vim.ui
 
+-- colorscheme -----------------------------------------------------------------
 cmd.colorscheme("basic")
 
 -- options ---------------------------------------------------------------------
 opt.undofile = true
 opt.backup = false
 opt.writebackup = false
-opt.mouse = {}
+opt.mouse = "nvi"
 opt.title = true
 
 opt.shortmess:append({ I = true })
@@ -19,7 +20,7 @@ opt.colorcolumn = "+1"
 
 opt.expandtab = true
 opt.tabstop = 4
-opt.shiftwidth = 2
+opt.shiftwidth = 4
 opt.softtabstop = -1
 opt.smarttab = true
 
@@ -27,19 +28,10 @@ opt.showtabline = 2
 opt.winbar = "%f%( %h%m%r%y%)"
 opt.laststatus = 3
 
-local statusline_group = api.nvim_create_augroup("Statusline", {})
-local cwd = fn.pathshorten(vim.fn.getcwd())
-api.nvim_create_autocmd({ "DirChanged" }, {
-  group = statusline_group,
-  callback = function()
-    cwd = fn.pathshorten(vim.fn.getcwd())
-  end
-})
-
 function _G.statusline()
   local wordcount = fn.wordcount()
   return table.concat({
-    cwd,
+    fn.pathshorten(fn.getcwd()),
     " %=",
     " <%b> ",
     wordcount.visual_chars or wordcount.cursor_chars, "/", wordcount.chars, " ",
@@ -53,102 +45,55 @@ opt.infercase = true
 opt.smartcase = true
 opt.smartindent = true
 opt.clipboard = "unnamedplus"
-opt.whichwrap = {
-  ["b"] = true,
-  ["s"] = true,
-  ["h"] = true,
-  ["l"] = true,
-  ["<"] = true,
-  [">"] = true,
-  ["~"] = true,
-  ["["] = true,
-  ["]"] = true
-}
 opt.wildoptions = { "fuzzy" }
 opt.wildignorecase = true
 
+
 opt.path = ".,,**"
 
-opt.completeopt = {
-  "menuone",
-  "preview",
-}
-
-local terminal_group = api.nvim_create_augroup("Terminal", {})
-api.nvim_create_autocmd({ "TermOpen" }, {
-  group = terminal_group,
-  callback = function()
-    local opt_l = vim.opt_local
-    opt_l.number = false
-    opt_l.relativenumber = false
-  end
-})
+opt.completeopt = { "menuone", "preview", }
 
 -- keymaps ---------------------------------------------------------------------
 local keymap_set = vim.keymap.set
 
-keymap_set("n", "<esc>", function()
-  cmd.nohlsearch()
-end, { desc = "Stop the highlighting for the 'hlsearch' option" })
+keymap_set("n", "<esc>", "<cmd>nohlsearch<cr>")
 
-keymap_set("c", "<m-h>", "<left>", { desc = "Left in c-mode" })
-keymap_set("c", "<m-l>", "<right>", { desc = "Right in c-mode" })
+keymap_set("c", "<m-h>", "<left>")
+keymap_set("c", "<m-l>", "<right>")
 
-keymap_set("n", "<leader>f", ":find ", { desc = ":find" })
-keymap_set("n", "<leader>b", ":buffer ", { desc = ":buffer" })
-keymap_set("n", "<leader>h", ":help ", { desc = ":help" })
+keymap_set("n", "<leader>f", ":find ")
+keymap_set("n", "<leader>b", ":buffer ")
+keymap_set("n", "<leader>h", ":help ")
+keymap_set("n", "<leader>g", ":vimgrep /")
 
-keymap_set("n", "<leader>s", function()
-  vim.opt_local.spell = not(vim.opt_local.spell:get())
-end, { desc = "Toggle spell" })
+keymap_set("n", "<leader>s", "<cmd>:set spell!<cr>")
 
-keymap_set("n", "<leader>m", "<cmd>make<cr>", { desc = ":make" })
+keymap_set("n", "<leader>m", "<cmd>make<cr>")
 
-keymap_set("n", "<leader>d", "<cmd>enew<cr><cmd>bd #<cr>", { desc = "Delete buffer" })
-keymap_set("n", "<leader>D", "<cmd>bd<cr>", { desc = "Delete buffer and close window" })
+keymap_set("n", "<leader>d", "<cmd>enew<cr><cmd>bdelete#<cr>")
+keymap_set("n", "<leader>D", "<cmd>bdelete<cr>")
 
-keymap_set("n", "]b", "<cmd>bnext<cr>", { desc = "Next buffer" })
-keymap_set("n", "[b", "<cmd>bprev<cr>", { desc = "Previous buffer" })
-keymap_set("n", "]t", "<cmd>tabnext<cr>", { desc = "Next tab" })
-keymap_set("n", "[t", "<cmd>tabprevious<cr>", { desc = "Previous tab" })
-keymap_set("n", "]q", "<cmd>cnext<cr>zz", { desc = "Next quickfix item" })
-keymap_set("n", "[q", "<cmd>cprev<cr>zz", { desc = "Previous quickfix item" })
+keymap_set("n", "]b", "<cmd>bnext<cr>")
+keymap_set("n", "[b", "<cmd>bprev<cr>")
+keymap_set("n", "]B", "<cmd>blast<cr>")
+keymap_set("n", "[B", "<cmd>bfirst<cr>")
+keymap_set("n", "]t", "<cmd>tabnext<cr>")
+keymap_set("n", "[t", "<cmd>tabprev<cr>")
+keymap_set("n", "]T", "<cmd>tablast<cr>")
+keymap_set("n", "[T", "<cmd>tabfirst<cr>")
+keymap_set("n", "]q", "<cmd>cnext<cr>zz")
+keymap_set("n", "[q", "<cmd>cprev<cr>zz")
+keymap_set("n", "]Q", "<cmd>clast<cr>zz")
+keymap_set("n", "[Q", "<cmd>cfirst<cr>zz")
 
-keymap_set("n", "<leader>co", "<cmd>copen<cr>", { desc = "Open quickfix window" })
-keymap_set("n", "<leader>cc", "<cmd>cclose<cr>", { desc = "Close quickfix window" })
+keymap_set("n", "<leader>co", "<cmd>copen<cr>")
+keymap_set("n", "<leader>cc", "<cmd>cclose<cr>")
 
-keymap_set("n", "<leader>g", function()
-  local pattern
-  ui.input({ prompt = ":vimgrep " }, function(input)
-    if not input then return end
-    if input:match("/.+/[gjf]*") then
-      pattern = input
-    else
-      pattern = ("/%s/g"):format(input)
-    end
-  end)
-  if not pattern then return end
-  local file
-  ui.input({
-    prompt = (":vimgrep %s "):format(pattern),
-    default = "**/*"
-  }, function(input)
-      if not input then return end
-    file = input
-  end)
-  if not file then return end
-  cmd.vimgrep(pattern, file)
-end, { desc = ":vimgrep" })
+keymap_set("i", "<c-f>", "<c-x><c-f>")
 
-keymap_set("i", "<c-f>", "<c-x><c-f>", { desc = "File name completion" })
+keymap_set("n", "<c-h>", "<c-w>h")
+keymap_set("n", "<c-j>", "<c-w>j")
+keymap_set("n", "<c-k>", "<c-w>k")
+keymap_set("n", "<c-l>", "<c-w>l")
 
--- netrw -----------------------------------------------------------------------
-local g = vim.g
-
-g.netrw_use_errorwindow = 0
-g.netrw_banner = 0
-g.netrw_bufsettings = "noma nomod nowrap ro nobl"
-g.netrw_fastbrowse = 0
-
-keymap_set("n", "<leader>.", "<cmd>Explore .<cr>",
-  { desc = "Explore current working directory" })
+keymap_set("n", "<leader>.", "<cmd>e.<cr>")