initial attempt at BundleCommand

autoload/vundle.vim

@@ -7,6 +7,9 @@
 com! -nargs=+         Bundle
 \ call vundle#config#bundle(<args>)
 
+com! -nargs=1 BundleCommand
+\ call vundle#installer#command(<args>)
+
 com! -nargs=? -bang -complete=custom,vundle#scripts#complete BundleInstall
 \ call vundle#installer#new('!' == '<bang>', <q-args>)
 

autoload/vundle/installer.vim

@@ -11,6 +11,10 @@ func! vundle#installer#new(bang, ...) abort
   call vundle#config#require(bundles)
 endf
 
+func! vundle#installer#command(cmd)
+  silent execute '!cd ~/.vim/bundle && ' . a:cmd
+  redraw!
+endf
 
 func! s:process(bang, cmd)
   let msg = ''