Move autocmd in viml to Lua

init.lua

@@ -19,7 +19,7 @@ utils.is_compatible_version(expected_version)
 local core_conf_files = {
   "globals.lua", -- some global settings
   "options.vim", -- setting options in nvim
-  "autocommands.vim", -- various autocommands
+  "custom-autocmd.lua", -- various autocommands
   "mappings.lua", -- all the user-defined mappings
   "plugins.vim", -- all the plugins installed and their configurations
   "colorschemes.lua", -- colorscheme settings

lua/custom-autocmd.lua

@@ -38,8 +38,8 @@ api.nvim_create_autocmd("TextYankPost", {
   pattern = "*",
   group = yank_group,
   callback = function(ev)
-    if vim.v.event.operator == 'y' then
+    if vim.v.event.operator == "y" then
-      vim.fn.setpos('.', vim.g.current_cursor_pos)
+      vim.fn.setpos(".", vim.g.current_cursor_pos)
     end
   end,
 })
@@ -102,4 +102,166 @@ local function open_nvim_tree(data)
   require("nvim-tree.api").tree.open()
 end
 
-vim.api.nvim_create_autocmd({ "VimEnter" }, { callback = open_nvim_tree })
+api.nvim_create_autocmd({ "VimEnter" }, { callback = open_nvim_tree })
+
+-- Do not use smart case in command line mode, extracted from https://vi.stackexchange.com/a/16511/15292.
+api.nvim_create_augroup("dynamic_smartcase", { clear = true })
+api.nvim_create_autocmd("CmdLineEnter", {
+  group = "dynamic_smartcase",
+  pattern = ":",
+  callback = function()
+    vim.o.smartcase = false
+  end,
+})
+
+api.nvim_create_autocmd("CmdLineLeave", {
+  group = "dynamic_smartcase",
+  pattern = ":",
+  callback = function()
+    vim.o.smartcase = true
+  end,
+})
+
+api.nvim_create_autocmd("TermOpen", {
+  group = api.nvim_create_augroup("term_start", { clear = true }),
+  pattern = "*",
+  callback = function()
+    -- Do not use number and relative number for terminal inside nvim
+    vim.wo.relativenumber = false
+    vim.wo.number = false
+
+    -- Go to insert mode by default to start typing command
+    vim.cmd("startinsert")
+  end,
+})
+
+-- Return to last cursor position when opening a file, note that here we cannot use BufReadPost
+-- as event. It seems that when BufReadPost is triggered, FileType event is still not run.
+-- So the filetype for this buffer is empty string.
+api.nvim_create_autocmd("FileType", {
+  group = api.nvim_create_augroup("resume_cursor_position", { clear = true }),
+  pattern = "*",
+  callback = function(ev)
+    local mark_pos = api.nvim_buf_get_mark(ev.buf, '"')
+    local last_cursor_line = mark_pos[1]
+
+    local max_line = vim.fn.line("$")
+    local buf_filetype = api.nvim_get_option_value("filetype", { buf = ev.buf })
+    local buftype = api.nvim_get_option_value("buftype", { buf = ev.buf })
+
+    -- only handle normal files
+    if buf_filetype == "" or buftype ~= "" then
+      return
+    end
+
+    -- Only resume last cursor position when there is no go-to-line command (something like '+23').
+    if vim.fn.match(vim.v.argv, [[\v^\+(\d){1,}$]]) ~= -1 then
+      return
+    end
+
+    if last_cursor_line > 1 and last_cursor_line <= max_line then
+      -- vim.print(string.format("mark_pos: %s", vim.inspect(mark_pos)))
+      -- it seems that without vim.schedule, the cursor position can not be set correctly
+      vim.schedule(function()
+        api.nvim_win_set_cursor(0, mark_pos)
+      end)
+    end
+  end,
+})
+
+local number_toggle_group = api.nvim_create_augroup("numbertoggle", { clear = true })
+api.nvim_create_autocmd({ "BufEnter", "FocusGained", "InsertLeave", "WinEnter" }, {
+  pattern = "*",
+  group = number_toggle_group,
+  desc = "togger line number",
+  callback = function()
+    if vim.wo.number then
+      vim.wo.relativenumber = true
+    end
+  end,
+})
+
+api.nvim_create_autocmd({ "BufLeave", "FocusLost", "InsertEnter", "WinLeave" }, {
+  group = number_toggle_group,
+  desc = "togger line number",
+  callback = function()
+    if vim.wo.number then
+      vim.wo.relativenumber = false
+    end
+  end,
+})
+
+api.nvim_create_autocmd("ColorScheme", {
+  group = api.nvim_create_augroup("custom_highlight", { clear = true }),
+  pattern = "*",
+  desc = "Define or overrride some highlight groups",
+  callback = function()
+    vim.cmd([[
+      " For yank highlight
+      highlight YankColor ctermfg=59 ctermbg=41 guifg=#34495E guibg=#2ECC71
+
+      " For cursor colors
+      highlight Cursor cterm=bold gui=bold guibg=#00c918 guifg=black
+      highlight Cursor2 guifg=red guibg=red
+
+      " For floating windows border highlight
+      highlight FloatBorder guifg=LightGreen guibg=NONE
+
+      " highlight for matching parentheses
+      highlight MatchParen cterm=bold,underline gui=bold,underline
+    ]])
+  end,
+})
+
+api.nvim_create_autocmd("BufEnter", {
+  pattern = "*",
+  group = api.nvim_create_augroup("auto_close_win", { clear = true }),
+  desc = "Quit Nvim if we have only one window, and its filetype match our pattern",
+  callback = function(ev)
+    local quit_filetypes = {'qf', 'vista', 'NvimTree'}
+
+    local should_quit = true
+    local tabwins = api.nvim_tabpage_list_wins(0)
+
+    for _, win in pairs(tabwins) do
+      local buf = api.nvim_win_get_buf(win)
+      local bf = fn.getbufvar(buf, '&filetype')
+
+      if fn.index(quit_filetypes, bf) == -1 then
+        should_quit = false
+      end
+    end
+
+    if should_quit then
+      vim.cmd("qall")
+    end
+  end
+})
+
+api.nvim_create_autocmd({"VimEnter", "DirChanged"}, {
+  group = api.nvim_create_augroup("git_repo_check", { clear = true }),
+  pattern = "*",
+  desc = "check if we are inside Git repo",
+  command = "call utils#Inside_git_repo()"
+})
+
+-- ref: https://vi.stackexchange.com/a/169/15292
+api.nvim_create_autocmd("BufReadPre", {
+  group = api.nvim_create_augroup("large_file", { clear = true }),
+  pattern = "*",
+  desc = "check if we are inside Git repo",
+  callback = function (ev)
+    local file_size_limit =524288 -- 0.5MB
+    local f = ev.file
+
+    if fn.getfsize(f) > file_size_limit or fn.getfsize(f) == -2 then
+      vim.o.eventignore = "all"
+      --  turning off relative number helps a lot
+      vim.bo.relativenumber = false
+
+      vim.bo.swapfile = false
+      vim.bo.bufhidden = "unload"
+      vim.bo.undolevels = -1
+    end
+  end
+})

viml_conf/autocommands.vim

@@ -1,121 +0,0 @@
-" Do not use smart case in command line mode, extracted from https://vi.stackexchange.com/a/16511/15292.
-augroup dynamic_smartcase
-  autocmd!
-  autocmd CmdLineEnter : set nosmartcase
-  autocmd CmdLineLeave : set smartcase
-augroup END
-
-augroup term_settings
-  autocmd!
-  " Do not use number and relative number for terminal inside nvim
-  autocmd TermOpen * setlocal norelativenumber nonumber
-  " Go to insert mode by default to start typing command
-  autocmd TermOpen * startinsert
-augroup END
-
-" More accurate syntax highlighting? (see `:h syn-sync`)
-augroup accurate_syn_highlight
-  autocmd!
-  autocmd BufEnter * :syntax sync fromstart
-augroup END
-
-" Return to last cursor position when opening a file
-augroup resume_cursor_position
-  autocmd!
-  autocmd BufReadPost * call s:resume_cursor_position()
-augroup END
-
-" Only resume last cursor position when there is no go-to-line command (something like '+23').
-function s:resume_cursor_position() abort
-  if line("'\"") > 1 && line("'\"") <= line("$") && &ft !~# 'commit'
-    let l:args = v:argv  " command line arguments
-    for l:cur_arg in l:args
-      " Check if a go-to-line command is given.
-      let idx = match(l:cur_arg, '\v^\+(\d){1,}$')
-      if idx != -1
-        return
-      endif
-    endfor
-
-    execute "normal! g`\"zvzz"
-  endif
-endfunction
-
-augroup numbertoggle
-  autocmd!
-  autocmd BufEnter,FocusGained,InsertLeave,WinEnter * if &nu | set rnu   | endif
-  autocmd BufLeave,FocusLost,InsertEnter,WinLeave   * if &nu | set nornu | endif
-augroup END
-
-" Define or override some highlight groups
-augroup custom_highlight
-  autocmd!
-  autocmd ColorScheme * call s:custom_highlight()
-augroup END
-
-function! s:custom_highlight() abort
-  " For yank highlight
-  highlight YankColor ctermfg=59 ctermbg=41 guifg=#34495E guibg=#2ECC71
-
-  " For cursor colors
-  highlight Cursor cterm=bold gui=bold guibg=#00c918 guifg=black
-  highlight Cursor2 guifg=red guibg=red
-
-  " For floating windows border highlight
-  highlight FloatBorder guifg=LightGreen guibg=NONE
-
-  " highlight for matching parentheses
-  highlight MatchParen cterm=bold,underline gui=bold,underline
-endfunction
-
-augroup auto_close_win
-  autocmd!
-  autocmd BufEnter * call s:quit_current_win()
-augroup END
-
-" Quit Nvim if we have only one window, and its filetype match our pattern.
-function! s:quit_current_win() abort
-  let l:quit_filetypes = ['qf', 'vista', 'NvimTree']
-
-  let l:should_quit = v:true
-
-  let l:tabwins = nvim_tabpage_list_wins(0)
-  for w in l:tabwins
-    let l:buf = nvim_win_get_buf(w)
-    let l:bf = getbufvar(l:buf, '&filetype')
-
-    if index(l:quit_filetypes, l:bf) == -1
-      let l:should_quit = v:false
-    endif
-  endfor
-
-  if l:should_quit
-    qall
-  endif
-endfunction
-
-augroup git_repo_check
-  autocmd!
-  autocmd VimEnter,DirChanged * call utils#Inside_git_repo()
-augroup END
-
-" ref: https://vi.stackexchange.com/a/169/15292
-function! s:handle_large_file() abort
-  let g:file_size_limit = 524288 " 0.5MB
-  let f = expand("<afile>")
-
-  if getfsize(f) > g:file_size_limit || getfsize(f) == -2
-    setlocal eventignore=all
-    " turning off relative number helps a lot
-    setlocal norelativenumber
-    setlocal noswapfile bufhidden=unload undolevels=-1
-  endif
-endfunction
-
-augroup LargeFile
-  autocmd!
-  autocmd BufReadPre * call s:handle_large_file()
-augroup END
-
-" Load auto-command defined in Lua
-lua require("custom-autocmd")