diff --git a/src/evalfunc.c b/src/evalfunc.c
index a29f0ff..d94bf8d 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -8506,7 +8506,11 @@
     {
 	buf[0] = 'n';
 	if (finish_op)
+	{
 	    buf[1] = 'o';
+	    // to be able to detect force-linewise/blockwise/characterwise operations
+	    buf[2] = motion_force;
+	}
 	else if (restart_edit == 'I' || restart_edit == 'R'
 							|| restart_edit == 'V')
 	{
diff --git a/src/globals.h b/src/globals.h
index 71400ca..eaced2a 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -928,6 +928,7 @@
  * "Visual_mode"    When State is NORMAL or INSERT.
  * "finish_op"	    When State is NORMAL, after typing the operator and before
  *		    typing the motion command.
+ * "motion_force"   Last motion_force  from do_pending_operator()
  * "debug_mode"	    Debug mode.
  */
 EXTERN int	State INIT(= NORMAL);	/* This is the current state of the
@@ -938,6 +939,7 @@
 
 EXTERN int	finish_op INIT(= FALSE);/* TRUE while an operator is pending */
 EXTERN long	opcount INIT(= 0);	/* count for pending operator */
+EXTERN int	motion_force INIT(= 0); // motion force for pending operator
 
 /*
  * Ex mode (Q) state
diff --git a/src/normal.c b/src/normal.c
index 78e3f20..77191c6 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -1395,8 +1395,11 @@
 	else if (oap->motion_force == Ctrl_V)
 	{
 	    /* Change line- or characterwise motion into Visual block mode. */
-	    VIsual_active = TRUE;
-	    VIsual = oap->start;
+	    if (!VIsual_active)
+	    {
+		VIsual_active = TRUE;
+		VIsual = oap->start;
+	    }
 	    VIsual_mode = Ctrl_V;
 	    VIsual_select = FALSE;
 	    VIsual_reselect = FALSE;
@@ -2129,6 +2132,7 @@
 	}
 	oap->block_mode = FALSE;
 	clearop(oap);
+	motion_force = NUL;
     }
 #ifdef FEAT_LINEBREAK
     curwin->w_p_lbr = lbr_saved;
@@ -7689,7 +7693,7 @@
      * characterwise, linewise, or blockwise. */
     if (cap->oap->op_type != OP_NOP)
     {
-	cap->oap->motion_force = cap->cmdchar;
+	motion_force = cap->oap->motion_force = cap->cmdchar;
 	finish_op = FALSE;	/* operator doesn't finish now but later */
 	return;
     }
diff --git a/src/testdir/test_mapping.vim b/src/testdir/test_mapping.vim
index fd7e28f..4ac06a1 100644
--- a/src/testdir/test_mapping.vim
+++ b/src/testdir/test_mapping.vim
@@ -230,3 +230,57 @@
   call assert_equal(expected, getreg(':'))
   cunabbr s
 endfunc
+
+func Test_motionforce_omap()
+  func GetCommand()
+    let g:m=mode(1)
+    let [g:lnum1, g:col1] = searchpos('-', 'Wb')
+    if g:lnum1 == 0
+        return "\<Esc>"
+    endif
+    let [g:lnum2, g:col2] = searchpos('-', 'W')
+    if g:lnum2 == 0
+        return "\<Esc>"
+    endif
+    return ":call Select()\<CR>"
+  endfunc
+  func Select()
+    call cursor([g:lnum1, g:col1])
+    exe "normal! 1 ". (strlen(g:m) == 2 ? 'v' : g:m[2])
+    call cursor([g:lnum2, g:col2])
+    execute "normal! \<BS>"
+  endfunc
+  new
+  onoremap <buffer><expr> i- GetCommand()
+  " 1) default omap mapping
+  %d_
+  call setline(1, ['aaa - bbb', 'x', 'ddd - eee'])
+  call cursor(2, 1)
+  norm di-
+  call assert_equal('no', g:m)
+  call assert_equal(['aaa -- eee'], getline(1, '$'))
+  " 2) forced characterwise operation
+  %d_
+  call setline(1, ['aaa - bbb', 'x', 'ddd - eee'])
+  call cursor(2, 1)
+  norm dvi-
+  call assert_equal('nov', g:m)
+  call assert_equal(['aaa -- eee'], getline(1, '$'))
+  " 3) forced linewise operation
+  %d_
+  call setline(1, ['aaa - bbb', 'x', 'ddd - eee'])
+  call cursor(2, 1)
+  norm dVi-
+  call assert_equal('noV', g:m)
+  call assert_equal([''], getline(1, '$'))
+  " 4) forced blockwise operation
+  %d_
+  call setline(1, ['aaa - bbb', 'x', 'ddd - eee'])
+  call cursor(2, 1)
+  exe "norm d\<C-V>i-"
+  call assert_equal("no\<C-V>", g:m)
+  call assert_equal(['aaabbb', 'x', 'dddeee'], getline(1, '$'))
+  bwipe!
+  delfunc Select
+  delfunc GetCommand
+endfunc
diff --git a/src/version.c b/src/version.c
index 6178a84..9ea9fc1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    648,
+/**/
     647,
 /**/
     646,