[ANNOUNCEMENT] Updated: libidn2{, _0, -devel, -doc} mingw64-{x86_64, i686}-libidn2 2.3.1

Cygwin libidn2 Maintainer Brian.Inglis@SystematicSW.ab.ca
Sat May 22 02:32:41 GMT 2021

The following packages have been upgraded in the Cygwin distribution:

* libidn2			2.3.1
* libidn2_0			2.3.1
* libidn2-devel			2.3.1
* libidn2-doc			2.3.1
* mingw64-x86_64-libidn2	2.3.1
* mingw64-i686-libidn2		2.3.1

International Domain Name library encodes and decodes Internationalized
Domain Names implementing IETF IDN WG Stringprep, Punycode, IDNA2008,
and Unicode TR46 specifications.

Mingw packages provide MS VC RT-linked binaries, NOT Cygwin binaries,
for use with the mingw64-{x86_64,i686}-gcc cross compiler, installed in

For more information see the project home page:


or the repo README:


Please see below or read /usr/share/doc/libidn2/NEWS after installation
for details of changes:


Noteworthy changes in release 2.3.1 (2021-05-12) [stable]

* Implement full roundtrip for lookup functionality
* Fix domain too long error
* doc: idn2.1 and libidn2.texi automatically get idn2 --help output.
* Updated gnulib files and various build fixes.

Noteworthy changes in release 2.3.0 (2019-11-14) [stable]

* Mitre assigned CVE-2019-12290 fixed by roundtrip feature in 2.2.0 (commit 241e8f48)
* Update the data tables from Unicode 6.3.0 to Unicode 11.0
* Turn _idn2_punycode_encode, _idn2_punycode_decode into compat symbols (Fixes #74)

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