patch 8.2.3454: using a count with "gp" leave cursor in wrong position

Problem:    Using a count with "gp" leave cursor in wrong position. (Naohiro
            Ono)
Solution:   Count the inserted lines. (closes #8899)

src/register.c

@@ -2065,6 +2065,8 @@ do_put(
 	}
 	else
 	{
+	    linenr_T	new_lnum = new_cursor.lnum;
+
 	    // Insert at least one line.  When y_type is MCHAR, break the first
 	    // line in two.
 	    for (cnt = 1; cnt <= count; ++cnt)
@@ -2085,6 +2087,7 @@ do_put(
 		    STRCAT(newp, ptr);
 		    // insert second line
 		    ml_append(lnum, newp, (colnr_T)0, FALSE);
+		    ++new_lnum;
 		    vim_free(newp);
 
 		    oldp = ml_get(lnum);
@@ -2103,10 +2106,13 @@ do_put(
 
 		for (; i < y_size; ++i)
 		{
-		    if ((y_type != MCHAR || i < y_size - 1)
-			    && ml_append(lnum, y_array[i], (colnr_T)0, FALSE)
+		    if (y_type != MCHAR || i < y_size - 1)
+		    {
+			if (ml_append(lnum, y_array[i], (colnr_T)0, FALSE)
 								      == FAIL)
 			    goto error;
+			new_lnum++;
+		    }
 		    lnum++;
 		    ++nr_lines;
 		    if (flags & PUT_FIXINDENT)
@@ -2138,6 +2144,8 @@ do_put(
 			    lendiff -= (int)STRLEN(ml_get(lnum));
 		    }
 		}
+		if (cnt == 1)
+		    new_lnum = lnum;
 	    }
 
 error:
@@ -2195,7 +2203,7 @@ error:
 		}
 		else
 		{
-		    curwin->w_cursor.lnum = lnum;
+		    curwin->w_cursor.lnum = new_lnum;
 		    curwin->w_cursor.col = col;
 		}
 	    }

src/testdir/test_put.vim

@@ -122,4 +122,14 @@ func Test_put_visual_delete_all_lines()
   close!
 endfunc
 
+func Test_gp_with_count_leaves_cursor_at_end()
+  new
+  call setline(1, '<---->')
+  call setreg('@', "foo\nbar", 'c')
+  exe "normal 1G3|3gpix\<Esc>"
+  call assert_equal(['<--foo', 'barfoo', 'barfoo', 'barx-->'], getline(1, '$'))
+
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3454,
 /**/
     3453,
 /**/