PCRE is a library of functions to support regular expressions whose syntax and semantics are as close as possible to those of the Perl 5 language. Written by: Philip Hazel University of Cambridge Computing Service, Cambridge, England. Phone: +44 1223 334714. Copyright (c) 1997-2022 University of Cambridge Also, see AUTHORS and LICENCE files. --------------------------------------------------------------------------- Modifications: May 2002. Ported to NCBI C++ Toolkit. Vladimir Ivanov (ivanov@ncbi.nlm.nih.gov) May 2009. Updated to v7.9. Vladimir Ivanov (ivanov@ncbi.nlm.nih.gov) July 2018. Updated to v8.42. Vladimir Ivanov (ivanov@ncbi.nlm.nih.gov) February 2023. Updated to PCRE2 10.42. Aaron Ucko (ucko@ncbi.nlm.nih.gov)