Do not rely on English return string of git status -uno

[kiryph]

$ git status -uno returns if the locale language is e.g. German

:!git status -uno
Auf Branch master
Ihr Branch ist auf demselben Stand wie 'origin/master'.

nichts zu committen (benutzen Sie die Option -u, um unversionierte Dateien anzuzeigen) 

The current regexif (join(a:data) =~ "is behind") does not catch this .

IMHO it is better to use git to return the actual number of commits behind upstream on the current branch. This does for example following command

$ git rev-list HEAD..origin --count

(from https://stackoverflow.com/questions/29035858/git-show-number-of-commits-behind-upstream#comment79656552_29039305)

The correspending change to plugin/vim-outdated-plugins.vim would be

❯ git diff
diff --git a/plugin/vim-outdated-plugins.vim b/plugin/vim-outdated-plugins.vim
index 8d12f4d..0cb843f 100644
--- a/plugin/vim-outdated-plugins.vim
+++ b/plugin/vim-outdated-plugins.vim
@@ -1,5 +1,5 @@
 function! s:JobHandler(job_id, data, event) dict
-  if (str2nr(join(a:data)) =~ "is behind")
+  if (str2nr(join(a:data)) != 0)
     let g:pluginsToUpdate += 1
   endif
 endfunction
@@ -22,7 +22,7 @@ function! CheckForUpdates()

   " TODO check only activated plugins and not all downloaded
   for key in keys(g:plugs)
-    let job = async#job#start([ 'bash', '-c', "cd " . g:plugs[key].dir ." && git remote update && git status -uno"], s:callbacks)
+    let job = async#job#start([ 'bash', '-c', "cd " . g:plugs[key].dir ." && git remote update > /dev/null && git rev-list HEAD..origin --count"], s:callbacks)
   endfor
 endfunction

[semanser]

Thanks, @kiryph! I really like your suggestion. It's done.