If you want to build statements (say for restoring from a backup, or creating the same UDFs on another system) you can use this
select concat('create function`',`name`,'`returns ',if(`ret`=0,'string','integer'),' soname\'',`dl`,'\';')from mysql.func;
Should return something like
create function`preg_position`returns integer soname'lib_mysqludf_preg.so';
create function`preg_rlike`returns integer soname'lib_mysqludf_preg.so';
create function`preg_replace`returns string soname'lib_mysqludf_preg.so';
create function`lib_mysqludf_preg_info`returns string soname'lib_mysqludf_preg.so';
create function`preg_capture`returns string soname'lib_mysqludf_preg.so';
create function`preg_check`returns integer soname'lib_mysqludf_preg.so';
create function`unhtml`returns string soname'unhtml.so';