Update on save for smaller files, closes #40

autoload/tagbar.vim

@@ -887,6 +887,10 @@ function! s:CreateAutocommands()
         autocmd BufUnload  __Tagbar__ call s:CleanUp()
         autocmd CursorHold __Tagbar__ call s:ShowPrototype()
 
+        autocmd BufWritePost *
+            \ if line('$') < g:tagbar_updateonsave_maxlines |
+                \ call s:AutoUpdate(fnamemodify(expand('<afile>'), ':p')) |
+            \ endif
         autocmd BufEnter,CursorHold * call
                     \ s:AutoUpdate(fnamemodify(expand('<afile>'), ':p'))
         autocmd BufDelete * call

doc/tagbar.txt

@@ -432,6 +432,22 @@ Example:
 	let g:tagbar_autoshowtag = 1
 <
 
+						*g:tagbar_updateonsave_maxlines*
+g:tagbar_updateonsave_maxlines~
+Default: 5000
+
+If the current file has fewer lines than the value of this variable, Tagbar
+will update immediately after saving the file. If it is longer then the update
+will only happen on the |CursorHold| event and when switching buffers (or
+windows). This is to prevent the time it takes to save a large file from
+becoming annoying in case you have a slow computer. If you have a fast
+computer you can set it to a higher value.
+
+Example:
+>
+	let g:tagbar_updateonsave_maxlines = 10000
+<
+
 							*g:tagbar_systemenc*
 g:tagbar_systemenc~
 Default: value of 'encoding'

plugin/tagbar.vim

@@ -70,6 +70,10 @@ if !exists('g:tagbar_autoshowtag')
     let g:tagbar_autoshowtag = 0
 endif
 
+if !exists('g:tagbar_updateonsave_maxlines')
+    let g:tagbar_updateonsave_maxlines = 5000
+endif
+
 if !exists('g:tagbar_systemenc')
     let g:tagbar_systemenc = &encoding
 endif