GEOMETRYCOLLECTION EMPTY is not recognized by ASTEXT()

[Philip Stoev]

MariaDB [test]> SELECT ASTEXT(GEOMETRYFROMTEXT('GEOMETRYCOLLECTION EMPTY'));
+------------------------------------------------------+
| ASTEXT(GEOMETRYFROMTEXT('GEOMETRYCOLLECTION EMPTY')) |
+------------------------------------------------------+
| NULL |
+------------------------------------------------------+
1 row in set (0.00 sec)

whereas one would expect "GEOMETRYCOLLECTION EMPTY" to be returned if GEOMETRYFROMTEXT() and ASTEXT() are mirror functions.

 bzr version-info
revision-id: <email address hidden>
date: 2011-09-21 09:29:37 +0500
build-date: 2011-09-21 10:52:23 +0300
revno: 3003
branch-nick: maria-5.3-gis