diff --git a/src/normal.c b/src/normal.c
index f83cbb3803..b6fc3e2a2c 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -1995,6 +1995,11 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 	    break;
 
 	case OP_FUNCTION:
+#ifdef FEAT_LINEBREAK
+	    /* Restore linebreak, so that when the user edits it looks as
+	     * before. */
+	    curwin->w_p_lbr = lbr_saved;
+#endif
 	    op_function(oap);		/* call 'operatorfunc' */
 	    break;
 
diff --git a/src/option.c b/src/option.c
index af559d296b..ba21bdc731 100644
--- a/src/option.c
+++ b/src/option.c
@@ -5907,6 +5907,7 @@ set_string_option(
     return r;
 }
 
+#if defined(FEAT_KEYMAP) || defined(FEAT_AUTOCMD) || defined(FEAT_SYN_HL)
 /*
  * Return TRUE if "val" is a valid 'filetype' name.
  * Also used for 'syntax' and 'keymap'.
@@ -5921,6 +5922,7 @@ valid_filetype(char_u *val)
 	    return FALSE;
     return TRUE;
 }
+#endif
 
 /*
  * Handle string options that need some action to perform when changed.
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 20cbaa00f0..29bd783ebc 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -35,8 +35,20 @@ func! CountSpaces(type, ...)
   let @@ = reg_save
 endfunc
 
-func! IsWindows()
-  return has("win32") || has("win64") || has("win95")
+func! OpfuncDummy(type, ...)
+  " for testing operatorfunc
+  let g:opt=&linebreak
+
+  if a:0  " Invoked from Visual mode, use gv command.
+    silent exe "normal! gvy"
+  elseif a:type == 'line'
+    silent exe "normal! '[V']y"
+  else
+    silent exe "normal! `[v`]y"
+  endif
+  " Create a new dummy window
+  new
+  let g:bufnr=bufnr('%')
 endfunc
 
 fun! Test_normal00_optrans()
@@ -147,7 +159,7 @@ endfunc
 func! Test_normal04_filter()
   " basic filter test
   " only test on non windows platform
-  if IsWindows()
+  if has('win32')
     return
   endif
   call Setup_NewWindow()
@@ -210,7 +222,7 @@ endfunc
 func! Test_normal06_formatprg()
   " basic test for formatprg
   " only test on non windows platform
-  if IsWindows()
+  if has('win32')
     return
   else
     " uses sed to number non-empty lines
@@ -328,9 +340,36 @@ func! Test_normal09_operatorfunc()
   " clean up
   unmap <buffer> ,,
   set opfunc=
+  unlet! g:a
   bw!
 endfunc
 
+func! Test_normal09a_operatorfunc()
+  " Test operatorfunc
+  call Setup_NewWindow()
+  " Add some spaces for counting
+  50,60s/$/  /
+  unlet! g:opt
+  set linebreak
+  nmap <buffer><silent> ,, :set opfunc=OpfuncDummy<CR>g@
+  50
+  norm ,,j
+  exe "bd!" g:bufnr
+  call assert_true(&linebreak)
+  call assert_equal(g:opt, &linebreak)
+  set nolinebreak
+  norm ,,j
+  exe "bd!" g:bufnr
+  call assert_false(&linebreak)
+  call assert_equal(g:opt, &linebreak)
+
+  " clean up
+  unmap <buffer> ,,
+  set opfunc=
+  bw!
+  unlet! g:opt
+endfunc
+
 func! Test_normal10_expand()
   " Test for expand()
   10new
@@ -1248,10 +1287,12 @@ func! Test_normal23_K()
   norm! K
   call assert_equal('aa%bb', fnamemodify(bufname('%'), ':t'))
   bwipe!
-  4
-  norm! K
-  call assert_equal('cc|dd', fnamemodify(bufname('%'), ':t'))
-  bwipe!
+  if !has('win32')
+    4
+    norm! K
+    call assert_equal('cc|dd', fnamemodify(bufname('%'), ':t'))
+    bwipe!
+  endif
   set iskeyword-=%
   set iskeyword-=\|
 
diff --git a/src/version.c b/src/version.c
index fbc841234c..b1f75771bf 100644
--- a/src/version.c
+++ b/src/version.c
@@ -779,6 +779,12 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    66,
+/**/
+    65,
+/**/
+    64,
 /**/
     63,
 /**/