diff --git a/runtime/ftplugin/man.vim b/runtime/ftplugin/man.vim
index 43f343a..6939493 100644
--- a/runtime/ftplugin/man.vim
+++ b/runtime/ftplugin/man.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin file
 " Language:	man
 " Maintainer:	SungHyun Nam <goweol@gmail.com>
-" Last Change: 	2016 Feb 04
+" Last Change: 	2016 Jun 20
 
 " To make the ":Man" command available before editing a manual page, source
 " this script from your startup vimrc file.
@@ -150,7 +150,17 @@
       endwhile
     endif
     if &filetype != "man"
-      new
+      if exists("g:ft_man_open_mode")
+        if g:ft_man_open_mode == "vert"
+          vnew
+        elseif g:ft_man_open_mode == "tab"
+          tabnew
+        else
+          new
+        endif
+      else
+        new
+      endif
       setl nonu fdc=0
     endif
   endif
@@ -160,10 +170,15 @@
 
   setl ma nonu nornu nofen
   silent exec "norm 1GdG"
+  let unsetwidth = 0
   if empty($MANWIDTH)
     let $MANWIDTH = winwidth(0)
+    let unsetwidth = 1
   endif
   silent exec "r!/usr/bin/man ".s:GetCmdArg(sect, page)." | col -b"
+  if unsetwidth
+    let $MANWIDTH = ''
+  endif
   " Remove blank lines from top and bottom.
   while getline(1) =~ '^\s*$'
     silent keepj norm ggdd
@@ -175,6 +190,7 @@
   setl ft=man nomod
   setl bufhidden=hide
   setl nobuflisted
+  setl noma
 endfunc
 
 func <SID>PopPage()
@@ -195,4 +211,4 @@
 
 endif
 
-" vim: set sw=2:
+" vim: set sw=2 ts=8 noet:
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 57f8283..2dbdc32 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -175,6 +175,7 @@
 	    test_increment.res \
 	    test_json.res \
 	    test_langmap.res \
+	    test_man.res \
 	    test_matchadd_conceal.res \
 	    test_packadd.res \
 	    test_perl.res \
diff --git a/src/testdir/test_man.vim b/src/testdir/test_man.vim
new file mode 100644
index 0000000..f2c48a4
--- /dev/null
+++ b/src/testdir/test_man.vim
@@ -0,0 +1,59 @@
+runtime ftplugin/man.vim
+
+function Test_g_ft_man_open_mode()
+  let l:w = winwidth(1)
+  vnew
+  let l:h = winheight(1)
+  q
+
+  " split horizontally
+  let wincnt = winnr('$')
+  Man 'vim'
+  if wincnt == winnr('$')
+    " Vim manual page cannot be found.
+    return
+  endif
+  call assert_equal(l:w, winwidth(1))
+  call assert_true(l:h > winheight(1))
+  call assert_equal(1, tabpagenr('$'))
+  call assert_equal(1, tabpagenr())
+  q
+
+  " split horizontally
+  let g:ft_man_open_mode = "horz"
+  Man 'vim'
+  call assert_equal(l:w, winwidth(1))
+  call assert_true(l:h > winheight(1))
+  call assert_equal(1, tabpagenr('$'))
+  call assert_equal(1, tabpagenr())
+  q
+
+  " split vertically
+  let g:ft_man_open_mode = "vert"
+  Man 'vim'
+  call assert_true(l:w > winwidth(1))
+  call assert_equal(l:h, winheight(1))
+  call assert_equal(1, tabpagenr('$'))
+  call assert_equal(1, tabpagenr())
+  q
+
+  " separate tab
+  let g:ft_man_open_mode = "tab"
+  Man 'vim'
+  call assert_equal(l:w, winwidth(1))
+  call assert_equal(l:h, winheight(1))
+  call assert_equal(2, tabpagenr('$'))
+  call assert_equal(2, tabpagenr())
+  q
+endfunction
+
+function Test_nomodifiable()
+  let wincnt = winnr('$')
+  Man 'vim'
+  if wincnt == winnr('$')
+    " Vim manual page cannot be found.
+    return
+  endif
+  call assert_false(&l:modifiable)
+  q
+endfunction
diff --git a/src/version.c b/src/version.c
index d1683fe..bef210a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1945,
+/**/
     1944,
 /**/
     1943,