Pause autocmd functionality with :TagbarPause

tagbar#PauseAutocommands :TagbarPause

:TagbarPause pauses autocmds, effectively freezing Tagbar on the last
file.  Useful for keeping a tag reference for a file open whilst working
in a different file.

autoload/tagbar.vim

@@ -45,6 +45,7 @@ let s:icon_open   = g:tagbar_iconchars[1]
 
 let s:type_init_done      = 0
 let s:autocommands_done   = 0
+let s:autocommands_enable = 0
 " 0: not checked yet; 1: checked and found; 2: checked and not found
 let s:checked_ctags       = 0
 let s:checked_ctags_types = 0
@@ -971,6 +972,19 @@ function! s:CreateAutocommands() abort
     augroup END
 
     let s:autocommands_done = 1
+    let s:autocommands_enable = 1
+endfunction
+
+" s:PauseAutocommands() {{{2
+" Toggle autocommands 
+function! s:PauseAutocommands() abort
+    if s:autocommands_enable == 1
+        autocmd! TagbarAutoCmds
+        let s:autocommands_enable = 0
+    else
+        call s:CreateAutocommands()
+        call s:AutoUpdate(fnamemodify(expand('%'), ':p'), 0)
+    endif
 endfunction
 
 " s:CheckForExCtags() {{{2
@@ -3456,6 +3470,11 @@ endfunction
 function! tagbar#RestoreSession() abort
     call s:RestoreSession()
 endfunction
+
+function! tagbar#PauseAutocommands() abort
+    call s:PauseAutocommands() 
+endfunction
+
 " }}}2
 
 " tagbar#getusertypes() {{{2