MIT License
The PCRE2.jl package is licensed under the MIT "Expat" License:
Copyright (c) 2018: Gandalf Software, Inc. (Scott Paul Jones), and other contributors (see below)
Parts are derived from the header file pcre2.h, in order to access the pcre2 library (which is distributed under the "BSD" license, see PCRE2 License) A few functions are derived from julia/base/pcre.jl (part of the open source Julia project, see https://github.com/JuliaLang/julia/blob/master/LICENSE.md (since not all contributors to Julia are not displayed by https://github.com/JuliaLang/julia/contributors, instead use git (git log | grep "Author:" | sort -u) to get a full list)).
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.