From da47e6ee561a282e9844918e9e2bcf4cc6e2be41 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Fri, 10 Oct 2014 04:39:38 +0900
Subject: [PATCH] Avoid unnecessary tab/window switch

---
 plug.vim | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/plug.vim b/plug.vim
index d41c6c5..30221db 100644
--- a/plug.vim
+++ b/plug.vim
@@ -506,23 +506,29 @@ function! s:switch_in()
     return 0
   endif
 
-  let s:pos = [tabpagenr(), winnr(), winsaveview()]
-  execute 'normal!' s:plug_tab.'gt'
-  let winnr = bufwinnr(s:plug_buf)
-  execute winnr 'wincmd w'
+  if winbufnr(0) != s:plug_buf
+    let s:pos = [tabpagenr(), winnr(), winsaveview()]
+    execute 'normal!' s:plug_tab.'gt'
+    let winnr = bufwinnr(s:plug_buf)
+    execute winnr.'wincmd w'
+    call add(s:pos, winsaveview())
+  else
+    let s:pos = [winsaveview()]
+  endif
 
-  call add(s:pos, winsaveview())
   setlocal modifiable
   return 1
 endfunction
 
 function! s:switch_out()
-  call winrestview(s:pos[3])
+  call winrestview(s:pos[-1])
   setlocal nomodifiable
 
-  execute 'normal!' s:pos[0].'gt'
-  execute s:pos[1] 'wincmd w'
-  call winrestview(s:pos[2])
+  if len(s:pos) > 1
+    execute 'normal!' s:pos[0].'gt'
+    execute s:pos[1] 'wincmd w'
+    call winrestview(s:pos[2])
+  endif
 endfunction
 
 function! s:prepare()