From 5247de4a0bb6eea640f0535b8ff1e7ca02d753dc Mon Sep 17 00:00:00 2001
From: Ivan Tishchenko <ivan.tishchenko@dsr-company.com>
Date: Fri, 27 Nov 2015 03:20:44 +0300
Subject: [PATCH] Prevent scrolling of large folds while filesave updates TOC.

During TOC update, screen sometimes scrolls -- most often I've seen this
when I'm working inside large enough fold (does not fit in one screen).

Fix uses winsaveview()/winrestview() instead of getpos()/setpos().
Winview pair would also manage scroll position on screen, not just
cursor position in text.
---
 autoload/vimwiki/base.vim | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/autoload/vimwiki/base.vim b/autoload/vimwiki/base.vim
index 2b8cabd..7968f86 100644
--- a/autoload/vimwiki/base.vim
+++ b/autoload/vimwiki/base.vim
@@ -1143,8 +1143,8 @@ function! vimwiki#base#update_listing_in_buffer(strings, start_header,
     return
   endif
 
-  let old_cursor_pos = getpos('.')
-  let cursor_line = old_cursor_pos[1]
+  let winview_save = winsaveview()
+  let cursor_line = winview_save.lnum
   let is_cursor_after_listing = 0
 
   let is_fold_closed = 1
@@ -1199,9 +1199,9 @@ function! vimwiki#base#update_listing_in_buffer(strings, start_header,
   endif
 
   if is_cursor_after_listing
-    let old_cursor_pos[1] += lines_diff
+    let winview_save.lnum += lines_diff
   endif
-  call setpos('.', old_cursor_pos)
+  call winrestview(winview_save)
 endfunction "}}}
 
 " WIKI link following functions {{{