Make the custom.plugins loading cross-platform

Author: oriori1703

lua/custom/plugins/init.lua

@@ -4,10 +4,10 @@
 -- See the kickstart.nvim README for more information
 
 -- Iterate over all Lua files in the plugins directory and load them
-local plugins_dir = vim.fn.stdpath 'config' .. '/lua/custom/plugins'
-for _, file in ipairs(vim.fn.readdir(plugins_dir)) do
-  if file:match '%.lua$' and file ~= 'init.lua' then
-    local module = file:gsub('%.lua$', '')
+local plugins_dir = vim.fs.joinpath(vim.fn.stdpath 'config', 'lua', 'custom', 'plugins')
+for file_name, type in vim.fs.dir(plugins_dir) do
+  if type == 'file' and file_name:match '%.lua$' and file_name ~= 'init.lua' then
+    local module = file_name:gsub('%.lua$', '')
     require('custom.plugins.' .. module)
   end
 end