From b624d3a4396972e87ffa62a2f32407fd71c16d14 Mon Sep 17 00:00:00 2001
From: Marco Hinz <mh.codebro@gmail.com>
Date: Tue, 13 Aug 2013 11:10:41 +0200
Subject: [PATCH] New option: g:startify_session_persistence

Whenever you load/save a session, v:this_session is set automatically.
If this option is enabled and v:this_session exists, the session file
will be updated before exiting Vim.

References #32.
---
 autoload/startify.vim | 9 +++++++++
 doc/startify.txt      | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/autoload/startify.vim b/autoload/startify.vim
index ae91b11..7d285ac 100644
--- a/autoload/startify.vim
+++ b/autoload/startify.vim
@@ -15,6 +15,15 @@ let s:restore_position = get(g:, 'startify_restore_position')
 let s:session_dir      = resolve(expand(get(g:, 'startify_session_dir',
       \ has('win32') ? '$HOME\vimfiles\session' : '~/.vim/session')))
 
+" Init: autocmds {{{1
+
+if get(g:, 'startify_session_persistence')
+  autocmd startify VimLeave *
+        \ if exists('v:this_session') && filewritable(v:this_session) |
+        \   execute 'mksession!' fnameescape(v:this_session) |
+        \ endif
+endif
+
 " Function: #get_separator {{{1
 function! startify#get_separator() abort
   return !exists('+shellslash') || &shellslash ? '/' : '\'
diff --git a/doc/startify.txt b/doc/startify.txt
index d38aa85..0abeff6 100644
--- a/doc/startify.txt
+++ b/doc/startify.txt
@@ -142,6 +142,7 @@ The number of files to list.
 When the file Session.vim is found in the current directory, it will be shown at
 the top of all lists as entry [0].
 
+
 ============-
 
     let g:startify_session_autoload = 0
@@ -152,6 +153,14 @@ directory.
 
 Great way to create a portable project folder.
 
+
+============-
+
+    let g:startify_session_persistence = 0
+
+Automatically update sessions before exiting Vim.
+
+
 ============-
 
     let g:startify_change_to_dir = 1