fix(autosave): fix lua autosave plugin

lua/spacevim/plugin/autosave.lua

@@ -6,7 +6,6 @@
 -- License: GPLv3
 --=============================================================================
 
-
 local default_opt = {
   timeoutlen = 60 * 5 * 1000,
   backupdir = '~/.cache/SpaceVim/backup/',
@@ -15,47 +14,33 @@ local default_opt = {
   filetype = {},
   filetypeExclude = {},
   buftypeExclude = {},
-    bufNameExclude = {}
+  bufNameExclude = {},
 }
 
 local logger = require('spacevim.logger').derive('autosave')
 local f = require('spacevim.api').import('file')
-
-
 local autosave_timer = -1
-
 local M = {}
 
-function M.config(opt)
-    for option, value in ipairs(default_opt) do
-        if opt[option] ~= nil then
-            logger.debug('set option`' .. option .. '` to :' .. opt[option])
-            default_opt[option] = opt[option]
-            if option == 'timeoutlen' then
-                setup_timer(default_opt[option])
-            elseif option == 'event' then
-                setup_events()
-            end
-        end
-    end
-
-end
-
 local function location_path(bufname)
   if vim.fn.empty(default_opt.backupdir) == 1 then
     return bufname
   else
-        local pth = f.unify_path(default_opt.backupdir, ':p') .. f.path_to_fname(bufname, '+=') .. '.backup'
+    local pth = f.unify_path(default_opt.backupdir, ':p')
+      .. f.path_to_fname(bufname, '+=')
+      .. '.backup'
     logger.info('backup path is:' .. pth)
     return pth
   end
 end
 
 local function save_buffer(bufnr)
-    if vim.fn.getbufvar(bufnr, '&modified') == 1 and
+  if
-        vim.fn.empty(vim.fn.getbufvar(bufnr, '&buftype')) == 1 and
+    vim.fn.getbufvar(bufnr, '&modified') == 1
-        vim.fn.filewritable(vim.fn.bufname(bufnr)) == 1 and
+    and vim.fn.empty(vim.fn.getbufvar(bufnr, '&buftype')) == 1
-        vim.fn.empty(vim.fn.bufname(bufnr)) == 0 then
+    and vim.fn.filewritable(vim.fn.bufname(bufnr)) == 1
+    and vim.fn.empty(vim.fn.bufname(bufnr)) == 0
+  then
     local lines = vim.fn.getbufline(bufnr, 1, '$')
     local f = location_path(vim.fn.bufname(bufnr))
     local ok, rst = pcall(vim.fn.writefile, lines, f)
@@ -66,10 +51,8 @@ local function save_buffer(bufnr)
     if vim.fn.empty(default_opt.backupdir) == 1 then
       vim.fn.setbufvar(bufnr, '&modified', 0)
       vim.cmd('silent checktime ' .. bufnr)
-
     end
   end
-
 end
 
 local function auto_dosave(...)
@@ -77,13 +60,10 @@ local function auto_dosave(...)
     for _, nr in ipairs(vim.fn.range(1, vim.fn.bufnr('$'))) do
       save_buffer(nr)
     end
-
   else
     save_buffer(vim.fn.bufnr('%'))
   end
-
 end
-
 local function setup_timer(_timeoutlen)
   if vim.fn.has('timers') == 0 then
     logger.warn('failed to setup timer, needs `+timers` feature!')
@@ -94,7 +74,8 @@ local function setup_timer(_timeoutlen)
     logger.debug('disabled autosave timer!')
   end
   if _timeoutlen < 1000 or _timeoutlen > 60 * 100 * 1000 then
-        local msg = "timeoutlen must be given in millisecods and can't be > 100*60*1000 (100 minutes) or < 1000 (1 second)"
+    local msg =
+      "timeoutlen must be given in millisecods and can't be > 100*60*1000 (100 minutes) or < 1000 (1 second)"
     logger.warn(msg)
     return
   end
@@ -103,18 +84,26 @@ local function setup_timer(_timeoutlen)
   if vim.fn.empty(autosave_timer) == 0 then
     logger.debug('setup new autosave timer, timeoutlen:' .. _timeoutlen)
   end
-
 end
 
-
 local function setup_events()
+  if #default_opt.event > 0 then
     vim.api.nvim_create_autocmd(default_opt.event, {
       pattern = { '*' },
       callback = auto_dosave,
     })
   end
+end
 
+function M.config(opt)
+  for option, value in pairs(default_opt) do
+    if opt[option] ~= nil then
+      logger.debug('set option`' .. option .. '` to :' .. vim.inspect(value))
+      default_opt[option] = value
+    end
+  end
   setup_timer(default_opt.timeoutlen)
   setup_events()
+end
 
 return M