Add i_CTRL-R state to mode(1) for after [ctrl_v_mode.patch](https://gist.github.com/presuku/fa7f351e792a9e74bfbd61684f0139ab) #vim

ctrl_r_mode.patch

diff --git a/src/edit.c b/src/edit.c
index d7486a31d..a7c17515e 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -1103,7 +1103,9 @@ doESCkey:
 	    break;
 
 	case Ctrl_R:	/* insert the contents of a register */
+	    ctrl_r_mode = 1;
 	    ins_reg();
+	    ctrl_r_mode = 0;
 	    auto_format(FALSE, TRUE);
 	    inserted_space = FALSE;
 	    break;
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 72a14e129..bb6c386d2 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -7884,6 +7884,8 @@ f_mode(typval_T *argvars, typval_T *rettv)
 	}
 	if (ctrl_v_mode == 1)
 	    buf[1] = 'V';
+	if (ctrl_r_mode == 1)
+	    buf[1] = 'r';
     }
     else if ((State & CMDLINE) || exmode_active)
     {
@@ -7894,6 +7896,8 @@ f_mode(typval_T *argvars, typval_T *rettv)
 	    buf[1] = 'e';
 	if (ctrl_v_mode == 1)
 	    buf[1] = 'V';
+	if (ctrl_r_mode == 1)
+	    buf[1] = 'r';
     }
     else
     {
diff --git a/src/ex_getln.c b/src/ex_getln.c
index 8bcaad575..cf5149e76 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -1483,6 +1483,7 @@ getcmdline(
 		goto returncmd;		/* back to cmd mode */
 
 	case Ctrl_R:			/* insert register */
+		ctrl_r_mode = 1;
 #ifdef USE_ON_FLY_SCROLL
 		dont_scroll = TRUE;	/* disallow scrolling here */
 #endif
@@ -1527,6 +1528,7 @@ getcmdline(
 		    {
 			gotesc = TRUE;  /* will free ccline.cmdbuff after
 					   putting it in history */
+			ctrl_r_mode = 0;
 			goto returncmd; /* back to cmd mode */
 		    }
 #endif
@@ -1543,6 +1545,7 @@ getcmdline(
 #endif
 		}
 		redrawcmd();
+		ctrl_r_mode = 0;
 		goto cmdline_changed;
 
 	case Ctrl_D:
diff --git a/src/globals.h b/src/globals.h
index 344d0776a..ed7e08a2f 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -986,6 +986,8 @@ EXTERN int	ctrl_x_mode INIT(= 0);	/* Which Ctrl-X mode are we in? */
 
 EXTERN int	ctrl_v_mode INIT(= 0);	/* Which Ctrl-V mode are we in? */
 
+EXTERN int	ctrl_r_mode INIT(= 0);	/* Which Ctrl-R mode are we in? */
+
 EXTERN int	no_abbr INIT(= TRUE);	/* TRUE when no abbreviations loaded */
 
 #ifdef USE_EXE_NAME