Does after folder have some special meaning in config file? Is there some doc about it? and its difference to ftplugin?
you can’t just rtfm when the :h of after-directory is
after-directory 7, 8, 9, 10. In after/ subdirectories of 1, 2, 3 and 4, with reverse
ordering. This is for preferences to overrule or add to the
distributed defaults or system-wide settings (rarely needed).
I think that says it all, the
after/ loaded after the ones outside it, so for example if you have
-- ftplugin/go.lua vim.bo.tabstop = 4
-- after/ftplugin/go.lua vim.bo.tabstop = 8
'tabstop' for a
go file will be 8 because