regression introduced by MDEV-14448

client/mysql.cc

@@ -2136,10 +2136,7 @@ static int read_and_execute(bool interactive)
         the readline/libedit library.
       */
       if (line)
-      {
         free(line);
-        glob_buffer.length(0);
-      }
       line= readline(prompt);
 #ifdef USE_LIBEDIT_INTERFACE
       /*

mysql-test/main/mysql-interactive.result

@@ -0,0 +1,24 @@
+#
+# regression introduced by MDEV-14448
+#
+delimiter $
+select 1;
+$
+Welcome to the MariaDB monitor.  Commands end with ; or \g.
+Your MariaDB connection id is X
+Server version: Y
+Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
+
+Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
+
+MariaDB [(none)]> delimiter $
+MariaDB [(none)]> select 1;
+    -> $
++---+
+| 1 |
++---+
+| 1 |
++---+
+1 row in set
+
+MariaDB [(none)]> 

mysql-test/main/mysql-interactive.test

@@ -0,0 +1,29 @@
+--echo #
+--echo # regression introduced by MDEV-14448
+--echo #
+source include/not_embedded.inc;
+source include/not_windows.inc;
+
+error 0,1;
+exec $MYSQL -V|grep -q readline;
+if ($sys_errno == 1)
+{
+  # strangely enough
+  skip does not work with libedit;
+}
+
+write_file $MYSQL_TMP_DIR/mysql_in;
+delimiter $
+select 1;
+$
+EOF
+let TERM=dumb;
+replace_regex /id is \d+/id is X/ /Server version: .*/Server version: Y/ / \(\d+\.\d+ sec\)//;
+error 0,127;
+exec socat EXEC:"$MYSQL",pty STDIO < $MYSQL_TMP_DIR/mysql_in;
+if ($sys_errno == 127)
+{
+  remove_file $MYSQL_TMP_DIR/mysql_in;
+  skip no socat;
+}
+remove_file $MYSQL_TMP_DIR/mysql_in;