Easy:

use strict;
use warnings;

$_ = join '', <DATA>;
push @_, "$2 $1" while m|<name><surname>(.*?)</surname><given-names>(.
+*?)</given-names></name>|g;
print '<P_contrib-author>' . join(', ', @_) . '</P_contrib-author>';

__DATA__
<contrib-group>
<name><surname>Wigfield</surname><given-names>Allan</given-names></nam
+e>
<name><surname>Klauda</surname><given-names>Susan L.</given-names></na
+me>
<name><surname>Cambria</surname><given-names>Jenna</given-names></name
+>
</contrib-group>

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In reply to Re: split function using multiple delimiters by TJPride
in thread split function using multiple delimiters by maha

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