mark@mark-desktop2:~$ apt-cache show libpcre2-dev
Package: libpcre2-dev
Priority: optional
Section: universe/libdevel
Installed-Size: 2182
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Matthew Vernon <matthew@debian.org>
Architecture: amd64
Source: pcre2
Version: 10.21-1
Depends: libc6-dev, libpcre2-8-0 (= 10.21-1), libpcre2-16-0 (= 10.21-1), libpcre2-32-0 (= 10.21-1), libpcre2-posix0 (= 10.21-1)
Conflicts: libpcre3-dev (<< 2:8.35-8)
Filename: pool/universe/p/pcre2/libpcre2-dev_10.21-1_amd64.deb
Size: 566090
MD5sum: 747c7405cfb5422bfbe2f49f31d36905
SHA1: 88c4e2c697e0650aebaa9a6056553a7aaa9b5770
SHA256: 7bfd7df02310d13ef8fcfbaccb239f0c24de8b5917112d878407cfe87dc43bdd
Description-en: New Perl Compatible Regular Expression Library - development files
 This is PCRE2, the new implementation of PCRE, a library of functions
 to support regular expressions whose syntax and semantics are as
 close as possible to those of the Perl 5 language. New projects
 should use this library in preference to the older library,
 confusingly called pcre3 in Debian.
 .
 This package contains the development files, including headers,
 static libraries, and documentation.
Description-md5: 83cd6126abdeb5c5410938130ac41e86
Multi-Arch: same
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu

mark@mark-desktop2:~$ apt-cache show libpcre3-dev
Package: libpcre3-dev
Priority: optional
Section: libdevel
Installed-Size: 2211
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Matthew Vernon <matthew@debian.org>
Architecture: amd64
Source: pcre3
Version: 2:8.38-3.1
Depends: libc6-dev, libpcre3 (= 2:8.38-3.1), libpcre16-3 (= 2:8.38-3.1), libpcre32-3 (= 2:8.38-3.1), libpcrecpp0v5 (= 2:8.38-3.1)
Filename: pool/main/p/pcre3/libpcre3-dev_8.38-3.1_amd64.deb
Size: 525214
MD5sum: 727c30cb41f0dae33f16d3188808918a
SHA1: 57f1747b06c52bb2edaf8bdfbe7fad4840e61305
SHA256: dec512261c1aaeb4fb6dee31431df9e64d13697b09bbaf4a2df90c458cc2a2db
Description-en_GB: Perl 5 Compatible Regular Expression Library - development files
 This 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.
 .
 This package contains the development files, including headers, static
 libraries, and documentation.
Description-md5: 3841aaec6be821ceb04646f8f92bb95c
Multi-Arch: same
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 9m