diff --git a/src/testdir/test_cursor_func.vim b/src/testdir/test_cursor_func.vim
index 0ddfcda..bfb908d 100644
--- a/src/testdir/test_cursor_func.vim
+++ b/src/testdir/test_cursor_func.vim
@@ -99,6 +99,7 @@
 	\ 'curscol': wincol + 9,
 	\ 'endcol': wincol + 9}, screenpos(winid, 2, 22))
   close
+  call assert_equal({}, screenpos(999, 1, 1))
   bwipe!
 endfunc
 
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index 6e54095..1c463f0 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -475,6 +475,11 @@
   call assert_equal('./file',      simplify('./dir/../file'))
   call assert_equal('../dir/file', simplify('dir/../../dir/file'))
   call assert_equal('./file',      simplify('dir/.././file'))
+  call assert_equal('../dir',      simplify('./../dir'))
+  call assert_equal('..',          simplify('../testdir/..'))
+  call mkdir('Xdir')
+  call assert_equal('.',           simplify('Xdir/../.'))
+  call delete('Xdir', 'd')
 
   call assert_fails('call simplify({->0})', 'E729:')
   call assert_fails('call simplify([])', 'E730:')
diff --git a/src/testdir/test_gf.vim b/src/testdir/test_gf.vim
index 736a315..3fa8511 100644
--- a/src/testdir/test_gf.vim
+++ b/src/testdir/test_gf.vim
@@ -1,3 +1,4 @@
+" Test for the gf and gF (goto file) commands
 
 " This is a test if a URL is recognized by "gf", with the cursor before and
 " after the "://".  Also test ":\\".
@@ -38,6 +39,13 @@
   call search("URL")
   call assert_equal("URL://machine.name:1234?q=vim", expand("<cfile>"))
 
+  %d
+  call setline(1, "demo://remote_file")
+  wincmd f
+  call assert_equal('demo://remote_file', @%)
+  call assert_equal(2, winnr('$'))
+  close!
+
   set isf&vim
   enew!
 endfunc
@@ -118,6 +126,11 @@
   norm! ttvtXgf
   call assert_equal('Xtest_gf_visual', bufname('%'))
 
+  " if multiple lines are selected, then gf should fail
+  call setline(1, ["one", "two"])
+  normal VGgf
+  call assert_equal('Xtest_gf_visual', @%)
+
   bwipe!
   call delete('Xtest_gf_visual')
   set hidden&
@@ -146,4 +159,21 @@
   bwipe!
 endfunc
 
+" If a file is not found by 'gf', then 'includeexpr' should be used to locate
+" the file.
+func Test_gf_includeexpr()
+  new
+  let g:Inc_fname = ''
+  func IncFunc()
+    let g:Inc_fname = v:fname
+    return v:fname
+  endfunc
+  setlocal includeexpr=IncFunc()
+  call setline(1, 'somefile.java')
+  call assert_fails('normal gf', 'E447:')
+  call assert_equal('somefile.java', g:Inc_fname)
+  close!
+  delfunc IncFunc
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 1760da4..2a06bb5 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -754,8 +754,9 @@
   bw!
 endfunc
 
-" Test for H, M and L commands with folds
-func Test_scroll_cmds()
+" Test for commands that scroll the window horizontally. Test with folds.
+"   H, M, L, CTRL-E, CTRL-Y, CTRL-U, CTRL-D, PageUp, PageDown commands
+func Test_vert_scroll_cmds()
   15new
   call setline(1, range(1, 100))
   exe "normal! 30ggz\<CR>"
@@ -764,6 +765,8 @@
   40,43fold
   46,49fold
   let h = winheight(0)
+
+  " Test for H, M and L commands
   " Top of the screen = 30
   " Folded lines = 9
   " Bottom of the screen = 30 + h + 9 - 1
@@ -771,10 +774,104 @@
   call assert_equal(35 + h, line('.'))
   normal! 4H
   call assert_equal(33, line('.'))
+
+  " Test for the CTRL-E and CTRL-Y commands with folds
+  %d
+  call setline(1, range(1, 10))
+  3,5fold
+  exe "normal 6G3\<C-E>"
+  call assert_equal(6, line('w0'))
+  exe "normal 2\<C-Y>"
+  call assert_equal(2, line('w0'))
+
+  " Test for CTRL-Y on a folded line
+  %d
+  call setline(1, range(1, 100))
+  exe (h + 2) .. "," .. (h + 4) .. "fold"
+  exe h + 5
+  normal z-
+  exe "normal \<C-Y>\<C-Y>"
+  call assert_equal(h + 1, line('w$'))
+
+  " Using <PageUp> and <PageDown> in an empty buffer should beep
+  %d
+  call assert_beeps('exe "normal \<PageUp>"')
+  call assert_beeps('exe "normal \<C-B>"')
+  call assert_beeps('exe "normal \<PageDown>"')
+  call assert_beeps('exe "normal \<C-F>"')
+
+  " Test for <C-U> and <C-D> with fold
+  %d
+  call setline(1, range(1, 100))
+  10,35fold
+  set scroll=10
+  exe "normal \<C-D>"
+  call assert_equal(36, line('.'))
+  exe "normal \<C-D>"
+  call assert_equal(46, line('.'))
+  exe "normal \<C-U>"
+  call assert_equal(36, line('.'))
+  exe "normal \<C-U>"
+  call assert_equal(10, line('.'))
+  exe "normal \<C-U>"
+  call assert_equal(1, line('.'))
+  set scroll&
+
+  " Test for scrolling to the top of the file with <C-U> and a fold
+  10
+  normal ztL
+  exe "normal \<C-U>\<C-U>"
+  call assert_equal(1, line('w0'))
+
+  " Test for CTRL-D on a folded line
+  %d
+  call setline(1, range(1, 100))
+  50,100fold
+  75
+  normal z-
+  exe "normal \<C-D>"
+  call assert_equal(50, line('.'))
+  call assert_equal(100, line('w$'))
+  normal z.
+  let lnum = winline()
+  exe "normal \<C-D>"
+  call assert_equal(lnum, winline())
+  call assert_equal(50, line('.'))
+  normal zt
+  exe "normal \<C-D>"
+  call assert_equal(50, line('w0'))
+
   set foldenable&
   close!
 endfunc
 
+" Test for the 'sidescroll' option
+func Test_sidescroll_opt()
+  new
+  20vnew
+
+  " scroll by 2 characters horizontally
+  set sidescroll=2 nowrap
+  call setline(1, repeat('a', 40))
+  normal g$l
+  call assert_equal(19, screenpos(0, 1, 21).col)
+  normal l
+  call assert_equal(20, screenpos(0, 1, 22).col)
+  normal g0h
+  call assert_equal(2, screenpos(0, 1, 2).col)
+  call assert_equal(20, screenpos(0, 1, 20).col)
+
+  " when 'sidescroll' is 0, cursor positioned at the center
+  set sidescroll=0
+  normal g$l
+  call assert_equal(11, screenpos(0, 1, 21).col)
+  normal g0h
+  call assert_equal(10, screenpos(0, 1, 10).col)
+
+  %bw!
+  set wrap& sidescroll&
+endfunc
+
 " basic tests for foldopen/folddelete
 func Test_normal18_z_fold()
   CheckFeature folding
@@ -2962,4 +3059,40 @@
   close!
 endfunc
 
+" Test for 'scrolloff' with a long line that doesn't fit in the screen
+func Test_normal_scroloff()
+  10new
+  80vnew
+  call setline(1, repeat('a', 1000))
+  set scrolloff=10
+  normal gg10gj
+  call assert_equal(8, winline())
+  normal 10gj
+  call assert_equal(10, winline())
+  normal 10gk
+  call assert_equal(3, winline())
+  set scrolloff&
+  close!
+endfunc
+
+" Test for vertical scrolling with CTRL-F and CTRL-B with a long line
+func Test_normal_vert_scroll_longline()
+  10new
+  80vnew
+  call setline(1, range(1, 10))
+  call append(5, repeat('a', 1000))
+  exe "normal gg\<C-F>"
+  call assert_equal(6, line('.'))
+  exe "normal \<C-F>\<C-F>"
+  call assert_equal(11, line('.'))
+  call assert_equal(1, winline())
+  exe "normal \<C-B>"
+  call assert_equal(10, line('.'))
+  call assert_equal(3, winline())
+  exe "normal \<C-B>\<C-B>"
+  call assert_equal(5, line('.'))
+  call assert_equal(5, winline())
+  close!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index d18b15f..a57f3c7 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -513,6 +513,7 @@
 endfunc
 
 func Test_set_values()
+  " opt_test.vim is generated from ../optiondefs.h using gen_opt_test.vim
   if filereadable('opt_test.vim')
     source opt_test.vim
   else
@@ -921,4 +922,35 @@
   set number&
 endfunc
 
+" Test for the 'window' option
+func Test_window_opt()
+  " Needs only one open widow
+  %bw!
+  call setline(1, range(1, 8))
+  set window=5
+  exe "normal \<C-F>"
+  call assert_equal(4, line('w0'))
+  exe "normal \<C-F>"
+  call assert_equal(7, line('w0'))
+  exe "normal \<C-F>"
+  call assert_equal(8, line('w0'))
+  exe "normal \<C-B>"
+  call assert_equal(5, line('w0'))
+  exe "normal \<C-B>"
+  call assert_equal(2, line('w0'))
+  exe "normal \<C-B>"
+  call assert_equal(1, line('w0'))
+  set window=1
+  exe "normal gg\<C-F>"
+  call assert_equal(2, line('w0'))
+  exe "normal \<C-F>"
+  call assert_equal(3, line('w0'))
+  exe "normal \<C-B>"
+  call assert_equal(2, line('w0'))
+  exe "normal \<C-B>"
+  call assert_equal(1, line('w0'))
+  enew!
+  set window&
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index d3b9127..669060a 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -488,10 +488,10 @@
   call assert_fails('Xprev', 'E553')
   call assert_fails('Xpfile', 'E553')
   Xnfile
-  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal('Xqftestfile2', @%)
   call assert_equal(10, line('.'))
   Xpfile
-  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal('Xqftestfile1', @%)
   call assert_equal(6, line('.'))
   5Xcc
   call assert_equal(5, g:Xgetlist({'idx':0}).idx)
@@ -507,7 +507,7 @@
   call assert_equal(6, g:Xgetlist({'idx':0}).idx)
   Xlast
   Xprev
-  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal('Xqftestfile2', @%)
   call assert_equal(11, line('.'))
   call assert_fails('Xnext', 'E553')
   call assert_fails('Xnfile', 'E553')
@@ -520,14 +520,14 @@
   endif
   call assert_equal(6, g:Xgetlist({'idx':0}).idx)
   Xrewind
-  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal('Xqftestfile1', @%)
   call assert_equal(5, line('.'))
 
   10Xnext
-  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal('Xqftestfile2', @%)
   call assert_equal(11, line('.'))
   10Xprev
-  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal('Xqftestfile1', @%)
   call assert_equal(5, line('.'))
 
   " Jumping to an error from the error window using cc command
@@ -538,7 +538,7 @@
   Xopen
   10Xcc
   call assert_equal(11, line('.'))
-  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal('Xqftestfile2', @%)
   Xopen
   call cursor(2, 1)
   if a:cchar == 'c'
@@ -547,14 +547,14 @@
     .ll
   endif
   call assert_equal(6, line('.'))
-  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal('Xqftestfile1', @%)
 
   " Jumping to an error from the error window (when only the error window is
   " present)
   Xopen | only
   Xlast 1
   call assert_equal(5, line('.'))
-  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal('Xqftestfile1', @%)
 
   Xexpr ""
   call assert_fails('Xnext', 'E42:')
@@ -1859,7 +1859,7 @@
   copen | only
   cfirst
   call assert_equal(1, tabpagenr())
-  call assert_equal('Xqftestfile1', bufname(''))
+  call assert_equal('Xqftestfile1', @%)
 
   " If opening a file changes 'switchbuf', then the new value should be
   " retained.
@@ -2679,7 +2679,7 @@
   wincmd b
   cfirst
   call assert_equal(2, winnr())
-  call assert_equal('F1', bufname(''))
+  call assert_equal('F1', @%)
   enew | only
   exe 'sb' bnum
   exe 'botright sb' bnum
@@ -2768,7 +2768,7 @@
   edit +3 Xtestfile2
   Xvimgrep +\cemacs+j Xtestfile1
   let l = g:Xgetlist()
-  call assert_equal('Xtestfile2', bufname(''))
+  call assert_equal('Xtestfile2', @%)
   call assert_equal('Editor:Emacs EmAcS', l[0].text)
 
   " Test for unloading a buffer after vimgrep searched the buffer
@@ -3394,7 +3394,7 @@
   Xopen | only
   2Xnext
   call assert_equal(3, g:Xgetlist({'idx' : 0}).idx)
-  call assert_equal('F3', bufname('%'))
+  call assert_equal('F3', @%)
   Xnext
   call assert_equal(7, col('.'))
   Xnext
@@ -4043,20 +4043,20 @@
   " Test for cexpr/lexpr
   enew
   Xexpr l
-  call assert_equal('Xtestfile1', bufname(''))
+  call assert_equal('Xtestfile1', @%)
   call assert_equal(2, line('.'))
 
   " Test for cfile/lfile
   enew
   call writefile(l, 'Xerr')
   Xfile Xerr
-  call assert_equal('Xtestfile1', bufname(''))
+  call assert_equal('Xtestfile1', @%)
   call assert_equal(2, line('.'))
 
   " Test for cbuffer/lbuffer
   edit Xerr
   Xbuffer
-  call assert_equal('Xtestfile1', bufname(''))
+  call assert_equal('Xtestfile1', @%)
   call assert_equal(2, line('.'))
 
   call delete('Xerr')
@@ -4081,7 +4081,7 @@
   autocmd QuickFixCmdPost * Xolder
   call writefile(['Xtestfile2:4:Line4'], 'Xerr')
   Xfile Xerr
-  call assert_equal('Xtestfile2', bufname(''))
+  call assert_equal('Xtestfile2', @%)
   call assert_equal(4, line('.'))
   autocmd! QuickFixCmdPost
 
@@ -4092,7 +4092,7 @@
   call writefile(['Xtestfile2:4:Line4'], 'Xerr')
   edit Xerr
   Xbuffer
-  call assert_equal('Xtestfile2', bufname(''))
+  call assert_equal('Xtestfile2', @%)
   call assert_equal(4, line('.'))
   autocmd! QuickFixCmdPost
 
@@ -4101,7 +4101,7 @@
   Xexpr 'Xtestfile1:2:Line2'
   autocmd QuickFixCmdPost * Xolder
   Xexpr 'Xtestfile2:4:Line4'
-  call assert_equal('Xtestfile2', bufname(''))
+  call assert_equal('Xtestfile2', @%)
   call assert_equal(4, line('.'))
   autocmd! QuickFixCmdPost
 
@@ -4112,7 +4112,7 @@
     Xexpr 'Xtestfile1:2:Line2'
     autocmd QuickFixCmdPost * Xolder
     silent Xgrep Line5 Xtestfile2
-    call assert_equal('Xtestfile2', bufname(''))
+    call assert_equal('Xtestfile2', @%)
     call assert_equal(5, line('.'))
     autocmd! QuickFixCmdPost
   endif
@@ -4122,7 +4122,7 @@
   Xexpr 'Xtestfile1:2:Line2'
   autocmd QuickFixCmdPost * Xolder
   silent Xvimgrep Line5 Xtestfile2
-  call assert_equal('Xtestfile2', bufname(''))
+  call assert_equal('Xtestfile2', @%)
   call assert_equal(5, line('.'))
   autocmd! QuickFixCmdPost
 
@@ -4415,7 +4415,7 @@
   " positioned correctly.
   ll 3
   call assert_equal(loclistid, getloclist(0, {'id' : 0}).id)
-  call assert_equal('Xtest1', bufname(''))
+  call assert_equal('Xtest1', @%)
   call assert_equal(15, line('.'))
   " Cleanup
   autocmd! WinEnter
@@ -4476,51 +4476,51 @@
   Xexpr ["X1:5:3:L5", "X2:5:2:L5", "X2:10:3:L10", "X2:15:4:L15", "X3:3:5:L3"]
   edit +7 X2
   Xabove
-  call assert_equal(['X2', 5], [bufname(''), line('.')])
+  call assert_equal(['X2', 5], [@%, line('.')])
   call assert_fails('Xabove', 'E553:')
   normal 7G
   Xbefore
-  call assert_equal(['X2', 5, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 2], [@%, line('.'), col('.')])
   call assert_fails('Xbefore', 'E553:')
 
   normal 2j
   Xbelow
-  call assert_equal(['X2', 10], [bufname(''), line('.')])
+  call assert_equal(['X2', 10], [@%, line('.')])
   normal 7G
   Xafter
-  call assert_equal(['X2', 10, 3], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 3], [@%, line('.'), col('.')])
 
   " Last error in this file
   Xbelow 99
-  call assert_equal(['X2', 15], [bufname(''), line('.')])
+  call assert_equal(['X2', 15], [@%, line('.')])
   call assert_fails('Xbelow', 'E553:')
   normal gg
   Xafter 99
-  call assert_equal(['X2', 15, 4], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 4], [@%, line('.'), col('.')])
   call assert_fails('Xafter', 'E553:')
 
   " First error in this file
   Xabove 99
-  call assert_equal(['X2', 5], [bufname(''), line('.')])
+  call assert_equal(['X2', 5], [@%, line('.')])
   call assert_fails('Xabove', 'E553:')
   normal G
   Xbefore 99
-  call assert_equal(['X2', 5, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 2], [@%, line('.'), col('.')])
   call assert_fails('Xbefore', 'E553:')
 
   normal gg
   Xbelow 2
-  call assert_equal(['X2', 10], [bufname(''), line('.')])
+  call assert_equal(['X2', 10], [@%, line('.')])
   normal gg
   Xafter 2
-  call assert_equal(['X2', 10, 3], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 3], [@%, line('.'), col('.')])
 
   normal G
   Xabove 2
-  call assert_equal(['X2', 10], [bufname(''), line('.')])
+  call assert_equal(['X2', 10], [@%, line('.')])
   normal G
   Xbefore 2
-  call assert_equal(['X2', 10, 3], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 3], [@%, line('.'), col('.')])
 
   edit X4
   call assert_fails('Xabove', 'E42:')
@@ -4544,45 +4544,45 @@
 	      \ "X2:15:1:L15_1", "X2:15:2:L15_2", "X2:15:3:L15_3", "X3:3:L3"]
   edit +1 X2
   Xbelow 2
-  call assert_equal(['X2', 10, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 1], [@%, line('.'), col('.')])
   normal 1G
   Xafter 2
-  call assert_equal(['X2', 5, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 2], [@%, line('.'), col('.')])
 
   normal gg
   Xbelow 99
-  call assert_equal(['X2', 15, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 1], [@%, line('.'), col('.')])
   normal gg
   Xafter 99
-  call assert_equal(['X2', 15, 3], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 3], [@%, line('.'), col('.')])
 
   normal G
   Xabove 2
-  call assert_equal(['X2', 10, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 1], [@%, line('.'), col('.')])
   normal G
   Xbefore 2
-  call assert_equal(['X2', 15, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 2], [@%, line('.'), col('.')])
 
   normal G
   Xabove 99
-  call assert_equal(['X2', 5, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 1], [@%, line('.'), col('.')])
   normal G
   Xbefore 99
-  call assert_equal(['X2', 5, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 1], [@%, line('.'), col('.')])
 
   normal 10G
   Xabove
-  call assert_equal(['X2', 5, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 5, 1], [@%, line('.'), col('.')])
   normal 10G$
   2Xbefore
-  call assert_equal(['X2', 10, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 10, 2], [@%, line('.'), col('.')])
 
   normal 10G
   Xbelow
-  call assert_equal(['X2', 15, 1], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 1], [@%, line('.'), col('.')])
   normal 9G
   5Xafter
-  call assert_equal(['X2', 15, 2], [bufname(''), line('.'), col('.')])
+  call assert_equal(['X2', 15, 2], [@%, line('.'), col('.')])
 
   " Invalid range
   if a:cchar == 'c'
diff --git a/src/version.c b/src/version.c
index d6ed2cd..de54b21 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1040,
+/**/
     1039,
 /**/
     1038,