patch 8.2.3466: completion submode not indicated for virtual replace

Problem:    Completion submode not indicated for virtual replace.
Solution:   Add submode to "Rv". (closes #8945)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 588f511..c3d39d5 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -8074,22 +8074,23 @@
 		   niV	    Normal using |i_CTRL-O| in |Virtual-Replace-mode|
 		   nt	    Terminal-Normal (insert goes to Terminal-Job mode)
 		   v	    Visual by character
+		   vs	    Visual by character using |v_CTRL-O| in Select mode
 		   V	    Visual by line
+		   Vs	    Visual by line using |v_CTRL-O| in Select mode
 		   CTRL-V   Visual blockwise
+		   CTRL-Vs  Visual blockwise using |v_CTRL-O| in Select mode
 		   s	    Select by character
 		   S	    Select by line
 		   CTRL-S   Select blockwise
-		   vs	    Visual by character using |v_CTRL-O| from
-				Select mode
-		   Vs	    Visual by line using |v_CTRL-O| from Select mode
-		   CTRL-Vs  Visual blockwise using |v_CTRL-O| from Select mode
 		   i	    Insert
 		   ic	    Insert mode completion |compl-generic|
 		   ix	    Insert mode |i_CTRL-X| completion
 		   R	    Replace |R|
 		   Rc	    Replace mode completion |compl-generic|
-		   Rv	    Virtual Replace |gR|
 		   Rx	    Replace mode |i_CTRL-X| completion
+		   Rv	    Virtual Replace |gR|
+		   Rvc	    Virtual Replace mode completion |compl-generic|
+		   Rvx	    Virtual Replace mode |i_CTRL-X| completion
 		   c	    Command-line editing
 		   cv	    Vim Ex mode |gQ|
 		   ce	    Normal Ex mode |Q|
@@ -8098,6 +8099,7 @@
 		   r?	    A |:confirm| query of some sort
 		   !	    Shell or external command is executing
 		   t	    Terminal-Job mode: keys go to the job
+
 		This is useful in the 'statusline' option or when used
 		with |remote_expr()| In most other places it always returns
 		"c" or "n".
diff --git a/src/misc1.c b/src/misc1.c
index 8e21f1e..62eba02 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -675,6 +675,11 @@
 	{
 	    buf[0] = 'R';
 	    buf[1] = 'v';
+
+	    if (ins_compl_active())
+		buf[2] = 'c';
+	    else if (ctrl_x_mode_not_defined_yet())
+		buf[2] = 'x';
 	}
 	else
 	{
@@ -682,6 +687,7 @@
 		buf[0] = 'R';
 	    else
 		buf[0] = 'i';
+
 	    if (ins_compl_active())
 		buf[1] = 'c';
 	    else if (ctrl_x_mode_not_defined_yet())
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index e8762aa..d060ac4 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -785,6 +785,8 @@
   exe "normal iabc\<C-X>\<C-L>\<F2>\<Esc>u"
   call assert_equal('i-ic', g:current_modes)
 
+  exe "normal R\<F2>\<Esc>"
+  call assert_equal('R-R', g:current_modes)
   " R_CTRL-P: Multiple matches
   exe "normal RBa\<C-P>\<F2>\<Esc>u"
   call assert_equal('R-Rc', g:current_modes)
@@ -819,6 +821,42 @@
   exe "normal Rabc\<C-X>\<C-L>\<F2>\<Esc>u"
   call assert_equal('R-Rc', g:current_modes)
 
+  exe "normal gR\<F2>\<Esc>"
+  call assert_equal('R-Rv', g:current_modes)
+  " gR_CTRL-P: Multiple matches
+  exe "normal gRBa\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-P: Single match
+  exe "normal gRBro\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X
+  exe "normal gRBa\<C-X>\<F2>\<Esc>u"
+  call assert_equal('R-Rvx', g:current_modes)
+  " gR_CTRL-X CTRL-P: Multiple matches
+  exe "normal gRBa\<C-X>\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-P: Single match
+  exe "normal gRBro\<C-X>\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-P + CTRL-P: Single match
+  exe "normal gRBro\<C-X>\<C-P>\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-L: Multiple matches
+  exe "normal gR\<C-X>\<C-L>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-L: Single match
+  exe "normal gRBlu\<C-X>\<C-L>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-P: No match
+  exe "normal gRCom\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-P: No match
+  exe "normal gRCom\<C-X>\<C-P>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+  " gR_CTRL-X CTRL-L: No match
+  exe "normal gRabc\<C-X>\<C-L>\<F2>\<Esc>u"
+  call assert_equal('R-Rvc', g:current_modes)
+
   call assert_equal('n', 0->mode())
   call assert_equal('n', 1->mode())
 
diff --git a/src/version.c b/src/version.c
index 79f88eb..0801704 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3466,
+/**/
     3465,
 /**/
     3464,