runtime(go): add recommended indent options to ftplugin

related: #15264

Signed-off-by: markmacode <code@mamo.aleeas.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/ftplugin/go.vim

@@ -2,6 +2,7 @@
 " Language:	Go
 " Maintainer:	David Barnett (https://github.com/google/vim-ft-go)
 " Last Change:	2014 Aug 16
+" 2024 Jul 16 by Vim Project (add recommended indent style)
 
 if exists('b:did_ftplugin')
   finish
@@ -15,4 +16,9 @@ setlocal commentstring=//\ %s
 
 let b:undo_ftplugin = 'setl fo< com< cms<'
 
+if get(g:, 'go_recommended_style', 1)
+  setlocal noexpandtab softtabstop=0 shiftwidth=0
+  let b:undo_ftplugin ..= ' | setl et< sts< sw<'
+endif
+
 " vim: sw=2 sts=2 et