PCRE package naming
PCRE has been in Debian for some time; the current packages correspond
to upstream 8.35 (with a pile of backported security fixes, which I hope
will end up as an 8.38 release some time soon). These packages are
called pcre3 (and libpcre3 ships libpcre.so.3).
Upstream has a new PCRE library, which they hope everyone will
eventually migrate to, which is called PCRE2. It is currently version
10.20. It ships things named like libpcre2-8.so.0, and its pcregrep is
The natural thing to call the PCRE2 packages is pcre2, but that's going
to lead to confusion - ISTM that something that makes it clear that
PCRE2 is newer than PCRE is desirable. And, obviously, PCRE & PCRE2 need
to be co-installable.