patch 8.2.3644: count for 'operatorfunc' in Visual mode is not redone

Problem:    Count for 'operatorfunc' in Visual mode is not redone.
Solution:   Add the count to the redo buffer. (closes #9174)

src/normal.c

@@ -380,8 +380,10 @@ static const struct nv_cmd
 // Number of commands in nv_cmds[].
 #define NV_CMDS_SIZE ARRAY_LENGTH(nv_cmds)
 
+#ifndef PROTO  // cproto doesn't like this
 // Sorted index of commands in nv_cmds[].
 static short nv_cmd_idx[NV_CMDS_SIZE];
+#endif
 
 // The highest index for which
 // nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char]
@@ -1696,6 +1698,23 @@ prep_redo(
     int	    cmd3,
     int	    cmd4,
     int	    cmd5)
+{
+    prep_redo_num2(regname, num, cmd1, cmd2, 0L, cmd3, cmd4, cmd5);
+}
+
+/*
+ * Prepare for redo of any command with extra count after "cmd2".
+ */
+    void
+prep_redo_num2(
+    int	    regname,
+    long    num1,
+    int	    cmd1,
+    int	    cmd2,
+    long    num2,
+    int	    cmd3,
+    int	    cmd4,
+    int	    cmd5)
 {
     ResetRedobuff();
     if (regname != 0)	// yank from specified buffer
@@ -1703,13 +1722,14 @@ prep_redo(
 	AppendCharToRedobuff('"');
 	AppendCharToRedobuff(regname);
     }
-    if (num)
+    if (num1 != 0)
-	AppendNumberToRedobuff(num);
+	AppendNumberToRedobuff(num1);
-
     if (cmd1 != NUL)
 	AppendCharToRedobuff(cmd1);
     if (cmd2 != NUL)
 	AppendCharToRedobuff(cmd2);
+    if (num2 != 0)
+	AppendNumberToRedobuff(num2);
     if (cmd3 != NUL)
 	AppendCharToRedobuff(cmd3);
     if (cmd4 != NUL)

src/ops.c

@@ -3764,6 +3764,8 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 			    oap->motion_force, cap->cmdchar, cap->nchar);
 		else if (cap->cmdchar != ':' && cap->cmdchar != K_COMMAND)
 		{
+		    int opchar = get_op_char(oap->op_type);
+		    int extra_opchar = get_extra_op_char(oap->op_type);
 		    int nchar = oap->op_type == OP_REPLACE ? cap->nchar : NUL;
 
 		    // reverse what nv_replace() did
@@ -3771,10 +3773,14 @@ do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
 			nchar = CAR;
 		    else if (nchar == REPLACE_NL_NCHAR)
 			nchar = NL;
-		    prep_redo(oap->regname, 0L, NUL, 'v',
+
-					get_op_char(oap->op_type),
+		    if (opchar == 'g' && extra_opchar == '@')
-					get_extra_op_char(oap->op_type),
+			// also repeat the count for 'operatorfunc'
-					nchar);
+			prep_redo_num2(oap->regname, 0L, NUL, 'v',
+				     cap->count0, opchar, extra_opchar, nchar);
+		    else
+			prep_redo(oap->regname, 0L, NUL, 'v',
+						  opchar, extra_opchar, nchar);
 		}
 		if (!redo_VIsual_busy)
 		{

src/proto/normal.pro

@@ -10,6 +10,7 @@ void restore_visual_mode(void);
 int find_ident_under_cursor(char_u **text, int find_type);
 int find_ident_at_pos(win_T *wp, linenr_T lnum, colnr_T startcol, char_u **text, int *textcol, int find_type);
 void prep_redo(int regname, long num, int cmd1, int cmd2, int cmd3, int cmd4, int cmd5);
+void prep_redo_num2(int regname, long num1, int cmd1, int cmd2, long num2, int cmd3, int cmd4, int cmd5);
 void clearop(oparg_T *oap);
 void clearopbeep(oparg_T *oap);
 void may_clear_cmdline(void);

src/testdir/test_normal.vim

@@ -363,7 +363,7 @@ func Test_normal08_fold()
   bw!
 endfunc
 
-func Test_normal09_operatorfunc()
+func Test_normal09a_operatorfunc()
   " Test operatorfunc
   call Setup_NewWindow()
   " Add some spaces for counting
@@ -457,7 +457,7 @@ func Test_normal09_operatorfunc()
   bw!
 endfunc
 
-func Test_normal09a_operatorfunc()
+func Test_normal09b_operatorfunc()
   " Test operatorfunc
   call Setup_NewWindow()
   " Add some spaces for counting
@@ -484,6 +484,26 @@ func Test_normal09a_operatorfunc()
   unlet! g:opt
 endfunc
 
+func OperatorfuncRedo(_)
+  let g:opfunc_count = v:count
+endfunc
+
+func Test_normal09c_operatorfunc()
+  " Test redoing operatorfunc
+  new
+  call setline(1, 'some text')
+  set operatorfunc=OperatorfuncRedo
+  normal v3g@
+  call assert_equal(3, g:opfunc_count)
+  let g:opfunc_count = 0
+  normal .
+  call assert_equal(3, g:opfunc_count)
+
+  bw!
+  unlet g:opfunc_count
+  set operatorfunc=
+endfunc
+
 func Test_normal10_expand()
   " Test for expand()
   10new

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3644,
 /**/
     3643,
 /**/