vim-patch:8.1.0648: custom operators can't act upon forced motion

Problem:    Custom operators can't act upon a forced motion. (Christian
            Wellenbrock)
Solution:   Add the forced motion to the mode() result. (Christian Brabandt,
            closes vim/vim#3490)
https://github.com/vim/vim/commit/5976f8ff00efcb3e155a89346e44f2ad43d2405a

closes #8667
closes #9476

Christian Wellenbrock:

> For (most) built in text objects it's possible to force operation on
> them to be linewise, for example by using `dVab` (`:h o_V`,
> `motion_force`). When using custom text objects (defined as mappings
> by plugins for example), this doesn't currently work.
>
> Example:
>
>     onoremap x viw
>
> Open a file with a few lines each containing some words. With the
> cursor on any word, try:
>
> 1. `dw` (builtin) deletes some characters
> 2. `dVw` (builtin) deletes linewise
> 3. `dx` (from mapping) deletes some characters
> 4. `dVx` (from mapping) deletes some characters, but should delete
>    linewise

ref: https://github.com/wellle/targets.vim/issues/214
ref: https://gitter.im/neovim/neovim?at=5b379ff7f1664406610e7483

1 files changed, 7 insertions, 4 deletions

diff --git a/src/nvim/normal.c b/src/nvim/normal.c
index 705dea4e88..29c5d27258 100644
--- a/src/nvim/normal.c
+++ b/src/nvim/normal.c
@@ -1445,8 +1445,10 @@ void do_pending_operator(cmdarg_T *cap, int old_col, bool gui_yank)
       oap->motion_type = kMTCharWise;
     } 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;
@@ -2039,6 +2041,7 @@ void do_pending_operator(cmdarg_T *cap, int old_col, bool gui_yank)
       curwin->w_cursor = old_cursor;
     }
     clearop(oap);
+    motion_force = NUL;
   }
   curwin->w_p_lbr = lbr_saved;
 }
@@ -6389,8 +6392,8 @@ static void nv_visual(cmdarg_T *cap)
   /* 'v', 'V' and CTRL-V can be used while an operator is pending to make it
    * characterwise, linewise, or blockwise. */
   if (cap->oap->op_type != OP_NOP) {
-    cap->oap->motion_force = cap->cmdchar;
-    finish_op = false;          /* operator doesn't finish now but later */
+    motion_force = cap->oap->motion_force = cap->cmdchar;
+    finish_op = false;          // operator doesn't finish now but later
     return;
   }