Add a test for #44816

tests/queries/0_stateless/02793_implicit_pretty_format_settings.expect

@@ -0,0 +1,27 @@
+#!/usr/bin/expect -f
+
+set basedir [file dirname $argv0]
+set basename [file tail $argv0]
+exp_internal -f $env(CLICKHOUSE_TMP)/$basename.debuglog 0
+set history_file $env(CLICKHOUSE_TMP)/$basename.history
+
+log_user 0
+set timeout 60
+match_max 100000
+expect_after {
+    # Do not ignore eof from expect
+    -i $any_spawn_id eof { exp_continue }
+    # A default timeout action is to do nothing, change it to fail
+    -i $any_spawn_id timeout { exit 1 }
+}
+
+spawn bash -c "source $basedir/../shell_config.sh ; \$CLICKHOUSE_CLIENT_BINARY \$CLICKHOUSE_CLIENT_OPT --disable_suggestion --history_file=$history_file"
+expect ":) "
+
+# Send a command
+send -- "SELECT 1 SETTINGS output_format_pretty_row_numbers = 1\r"
+expect "1. │ 1 │"
+expect ":) "
+
+send -- "\4"
+expect eof