Allow updating specific plugins.

autoload/vundle.vim

@@ -8,8 +8,8 @@
 com! -nargs=+  -bar   Plugin
 \ call vundle#config#bundle(<args>)
 
-com! -nargs=? -bang -complete=custom,vundle#scripts#complete PluginInstall
-\ call vundle#installer#new('!' == '<bang>', <q-args>)
+com! -nargs=* -bang -complete=custom,vundle#scripts#complete PluginInstall
+\ call vundle#installer#new('!' == '<bang>', <f-args>)
 
 com! -nargs=? -bang -complete=custom,vundle#scripts#complete PluginSearch
 \ call vundle#scripts#all('!' == '<bang>', <q-args>)
@@ -24,7 +24,7 @@ com! -nargs=0         PluginDocs
 \ call vundle#installer#helptags(g:bundles)
 
 " Aliases
-com! PluginUpdate PluginInstall!
+com! -nargs=* -complete=custom,vundle#scripts#complete PluginUpdate PluginInstall! <args>
 
 " Vundle Aliases
 com! -nargs=? -bang -complete=custom,vundle#scripts#complete VundleInstall PluginInstall<bang> <args>

autoload/vundle/installer.vim

@@ -6,9 +6,21 @@
 " ...    -- any number of bundle specifications (separate arguments)
 " ---------------------------------------------------------------------------
 func! vundle#installer#new(bang, ...) abort
-  let bundles = (a:1 == '') ?
-        \ g:bundles :
-        \ map(copy(a:000), 'vundle#config#bundle(v:val, {})')
+  " No specific plugins are specified. Operate on all plugins.
+  if a:0 == 0
+    let bundles = g:bundles
+  " Specific plugins are specified for update. Update them.
+  elseif (a:bang)
+    let bundles = filter(copy(g:bundles), 'index(a:000, v:val.name) > -1')
+  " Specific plugins are specified for installation. Install them.
+  else
+    let bundles = map(copy(a:000), 'vundle#config#bundle(v:val, {})')
+  endif
+
+  if empty(bundles)
+    echoerr 'No bundles were selected for operation'
+    return
+  endif
 
   let names = vundle#scripts#bundle_names(map(copy(bundles), 'v:val.name_spec'))
   call vundle#scripts#view('Installer',['" Installing plugins to '.expand(g:bundle_dir, 1)], names +  ['Helptags'])

autoload/vundle/scripts.vim

@@ -39,7 +39,12 @@ endf
 "            candidates, see also :h command-completion-custom
 " ---------------------------------------------------------------------------
 func! vundle#scripts#complete(a,c,d)
+  " Return only installed plugins if updating
+  if match(a:c, '\v^Plugin%(Install!|Update)') == 0
+    return join(map(copy(g:bundles), 'v:val.name'), "\n")
+  else
     return join(s:load_scripts(0),"\n")
+  endif
 endf
 
 

doc/vundle.txt

@@ -244,8 +244,16 @@ PluginInstall allows installation of plugins by name:
 >
   :PluginInstall unite.vim
 
-Installs and activates unite.vim. You can use Tab to auto-complete known
-script names. Note that the installation just described isn't permanent. To
+Installs and activates unite.vim.
+
+PluginInstall also allows installation of several plugins separated by space.
+>
+  :PluginInstall tpope/vim-surround tpope/vim-fugitive
+
+Installs both tpope/vim-surround and tpope/vim-fugitive from GitHub.
+
+You can use Tab to auto-complete known script names.
+Note that the installation just described isn't permanent. To
 finish, you must put `Plugin 'unite.vim'` at the appropriate place in your
 `.vimrc` to tell Vundle to load the plugin at startup.
 
@@ -263,6 +271,12 @@ Installs or updates the configured plugins. Press 'u' after updates complete
 to see the change log of all updated bundles. Press 'l' (lowercase 'L') to
 see the log of commands if any errors occurred.
 
+To update specific plugins, write their names separated by space:
+>
+  :PluginInstall! vim-surround vim-fugitive
+or >
+  :PluginUpdate vim-surround vim-fugitive
+
 3.5 SEARCHING PLUGINS ~
                                       *vundle-plugins-search* *:PluginSearch*
 >