- Qt 6.4
- Qt Core
- PCRE2, version 10.40
- Qt 6.4.2 Reference Documentation

# PCRE2, version 10.40

The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5.

Optionally used in Qt Core (QRegularExpression). Configure with -system-pcre or -no-pcre to avoid.

The sources can be found in qt6-base-6.4.2+dfsg/src/3rdparty/pcre2.

Project Homepage, upstream version: 10.40

     Copyright (c) 1997-2022 University of Cambridge
     Copyright (c) 2010-2020 Zoltan Herczeg

BSD 3-clause "New" or "Revised" License.

     PCRE2 LICENCE
     -------------

     PCRE2 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.

     Releases 10.00 and above of PCRE2 are distributed under the terms of the "BSD"
     licence, as specified below, with one exemption for certain binary
     redistributions. The documentation for PCRE2, supplied in the "doc" directory,
     is distributed under the same terms as the software itself. The data in the
     testdata directory is not copyrighted and is in the public domain.

     The basic library functions are written in C and are freestanding. Also
     included in the distribution is a just-in-time compiler that can be used to
     optimize pattern matching. This is an optional feature that can be omitted when
     the library is built.

     THE BASIC LIBRARY FUNCTIONS
     ---------------------------

     Written by:       Philip Hazel
     Email local part: Philip.Hazel
     Email domain:     gmail.com

     Retired from University of Cambridge Computing Service,
     Cambridge, England.

     Copyright (c) 1997-2022 University of Cambridge
     All rights reserved.

     PCRE2 JUST-IN-TIME COMPILATION SUPPORT
     --------------------------------------

     Written by:       Zoltan Herczeg
     Email local part: hzmester
     Email domain:     freemail.hu

     Copyright(c) 2010-2022 Zoltan Herczeg
     All rights reserved.

     STACK-LESS JUST-IN-TIME COMPILER
     --------------------------------

     Written by:       Zoltan Herczeg
     Email local part: hzmester
     Email domain:     freemail.hu

     Copyright(c) 2009-2022 Zoltan Herczeg
     All rights reserved.

     THE "BSD" LICENCE
     -----------------

     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are met:

         * Redistributions of source code must retain the above copyright notices,
           this list of conditions and the following disclaimer.

         * Redistributions in binary form must reproduce the above copyright
           notices, this list of conditions and the following disclaimer in the
           documentation and/or other materials provided with the distribution.

         * Neither the name of the University of Cambridge nor the names of any
           contributors may be used to endorse or promote products derived from this
           software without specific prior written permission.

     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.

     EXEMPTION FOR BINARY LIBRARY-LIKE PACKAGES
     ------------------------------------------

     The second condition in the BSD licence (covering binary redistributions) does
     not apply all the way down a chain of software. If binary package A includes
     PCRE2, it must respect the condition, but if package B is software that
     includes package A, the condition is not imposed on package B unless it uses
     PCRE2 independently.

     End