contrib/fuzzystrmatch/dmetaphone.c says this:
/***************************** COPYRIGHT NOTICES ***********************
Most of this code is directly from the Text::DoubleMetaphone perl module
version 0.05 available from http://www.cpan.org.
It bears this copyright notice:
Copyright 2000, Maurice Aubrey <maur...@hevanet.com>.
All rights reserved.
This code is based heavily on the C++ implementation by
Lawrence Philips and incorporates several bug fixes courtesy
of Kevin Atkinson <kev...@users.sourceforge.net>.
This module is free software; you may redistribute it and/or
modify it under the same terms as Perl itself.
Is that OK? Perl is dual-licensed under the GPL and the "Artistic
License", so the question is whether the Artistic License is compatible
with the PostgreSQL license. IANAL, but I couldn't immediately figure
out what the Artistic License requires, when you pick a piece of code
and modify and embed it in another project.
- Heikki
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