**Describe the unexpected behaviour**
```
milovidov-desktop :) SET output_format_pretty_row_numbers = 1

SET output_format_pretty_row_numbers = 1

Query id: bb15ca27-5a3c-48ac-814a-a3cfea42deda

Ok.

0 rows in set. Elapsed: 0.000 sec. 

milovidov-desktop :) SELECT 1 UNION ALL SELECT 2

SELECT 1
UNION ALL
SELECT 2

Query id: d940f566-7188-4d17-83d6-8421975791a9

   ┌─1─┐
1. │ 2 │
   └───┘
   ┌─1─┐
1. │ 1 │
   └───┘

2 rows in set. Elapsed: 0.001 sec.
```
{
namespace ErrorCodes
{
}
namespace
{
struct GridSymbols
{
    const char * left_top_corner = "┌";
    const char * right_top_corner = "┐";
    const char * left_bottom_corner = "└";
    const char * right_bottom_corner = "┘";
    const char * top_separator = "┬";
    const char * bottom_separator = "┴";
    const char * dash = "─";
    const char * bar = "│";
};
GridSymbols utf8_grid_symbols;
GridSymbols ascii_grid_symbols {
    "+",
    "+",
    "+",
    "+",
    "+",
    "+",
    "-",
    "|"
};
}
PrettyCompactBlockOutputFormat::PrettyCompactBlockOutputFormat(WriteBuffer & out_, const Block & header, const FormatSettings & format_settings_, bool mono_block_)