Update very old example file:

	formatting

	safe use of @aliases (don't expect registry to make copy of the list)

	quote argument names and values

modules/Bio/EnsEMBL/Utils/ensembl_init.example

 #
-# Example of configuration file used by Bio::EnsEMBL::Registry::load_all method
-# to store/register all kind of Adaptors.
+# Example of configuration file used by Bio::EnsEMBL::Registry::load_all
+# method to store/register all kind of Adaptors.
 
 use strict;
+use warnings;
+
 use Bio::EnsEMBL::Utils::ConfigRegistry;
 use Bio::EnsEMBL::DBSQL::DBAdaptor;
 use Bio::EnsEMBL::Compara::DBSQL::DBAdaptor;
 
 my @aliases;
- 
-new Bio::EnsEMBL::DBSQL::DBAdaptor(-host => 'ensembldb.ensembl.org',
-                                   -user => 'anonymous',
-                                   -port => 3306,
-                                   -species => 'Homo sapiens',
-                                   -group => 'core',
-                                   -dbname => 'homo_sapiens_core_23_34e');
 
-@aliases = ('H_Sapiens', 'homo sapiens', 'Homo_Sapiens','Homo_sapiens', 'Homo', 'homo', 'human');
+new Bio::EnsEMBL::DBSQL::DBAdaptor(
+                                 '-host'    => 'ensembldb.ensembl.org',
+                                 '-user'    => 'anonymous',
+                                 '-port'    => '3306',
+                                 '-species' => 'Homo sapiens',
+                                 '-group'   => 'core',
+                                 '-dbname' => 'homo_sapiens_core_23_34e'
+);
 
-Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(-species => "Homo sapiens",
-                                               -alias => \@aliases);
+@aliases = ( 'H_Sapiens',    'homo sapiens',
+             'Homo_Sapiens', 'Homo_sapiens',
+             'Homo',         'homo',
+             'human' );
 
+Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(
+                                           '-species' => 'Homo sapiens',
+                                           '-alias'   => [@aliases] );
 
-new Bio::EnsEMBL::DBSQL::DBAdaptor(-host => 'ensembldb.ensembl.org',
-                                   -user => 'anonymous',
-                                   -port => 3306,
-                                   -species => 'Mus musculus',
-                                   -group => 'core',
-                                   -dbname => 'mus_musculus_core_23_32c');
+new Bio::EnsEMBL::DBSQL::DBAdaptor(
+                                 '-host'    => 'ensembldb.ensembl.org',
+                                 '-user'    => 'anonymous',
+                                 '-port'    => '3306',
+                                 '-species' => 'Mus musculus',
+                                 '-group'   => 'core',
+                                 '-dbname' => 'mus_musculus_core_23_32c'
+);
 
-@aliases = ('M_Musculus', 'mus musculus', 'Mus_Musculus','Mus_musculus', 'Mus', 'mus', 'mouse');
+@aliases = ( 'M_Musculus',   'mus musculus',
+             'Mus_Musculus', 'Mus_musculus',
+             'Mus',          'mus',
+             'mouse' );
 
-Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(-species => "Mus musculus",
-                                               -alias => \@aliases);
+Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(
+                                           '-species' => 'Mus musculus',
+                                           '-alias'   => [@aliases] );
 
-new Bio::EnsEMBL::DBSQL::DBAdaptor(-host => 'ensembldb.ensembl.org',
-                                   -user => 'anonymous',
-                                   -port => 3306,
-                                   -species => 'Rattus norvegicus',
-                                   -group => 'core',
-                                   -dbname => 'rattus_norvegicus_core_23_3c');
+new Bio::EnsEMBL::DBSQL::DBAdaptor(
+                             '-host'    => 'ensembldb.ensembl.org',
+                             '-user'    => 'anonymous',
+                             '-port'    => '3306',
+                             '-species' => 'Rattus norvegicus',
+                             '-group'   => 'core',
+                             '-dbname' => 'rattus_norvegicus_core_23_3c'
+);
 
-@aliases = ('R_Norvegicus', 'rattus norvegicus', 'Rattus_Norvegicus','Rattus_norvegicus', 'Rattus', 'rattus', 'rat');
+@aliases = ( 'R_Norvegicus',      'rattus norvegicus',
+             'Rattus_Norvegicus', 'Rattus_norvegicus',
+             'Rattus',            'rattus',
+             'rat' );
 
-Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(-species => "Rattus norvegicus",
-                                               -alias => \@aliases);
+Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(
+                                      '-species' => 'Rattus norvegicus',
+                                      '-alias'   => [@aliases] );
 
-new Bio::EnsEMBL::Compara::DBSQL::DBAdaptor(-host => 'ensembldb.ensembl.org',
-                                            -user => 'anonymous',
-                                            -port => 3306,
-                                            -species => 'Compara23',
-                                            -dbname => 'ensembl_compara_23_1');
+new Bio::EnsEMBL::Compara::DBSQL::DBAdaptor(
+                                     '-host' => 'ensembldb.ensembl.org',
+                                     '-user' => 'anonymous',
+                                     '-port' => '3306',
+                                     '-species' => 'Compara23',
+                                     '-dbname' => 'ensembl_compara_23_1'
+);
 
-@aliases = ('ensembl_compara_23_1', 'compara23');
+@aliases = ( 'ensembl_compara_23_1', 'compara23' );
 
-Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(-species => "Compara23",
-                                               -alias => \@aliases);
+Bio::EnsEMBL::Utils::ConfigRegistry->add_alias(
+                                              '-species' => 'Compara23',
+                                              '-alias'   => [@aliases]
+);
 
-1;
\ No newline at end of file
+1;