Package: grep Version: 3.1-2 Severity: wishlist Tags: upstream grep currently uses libpcre.so.3 (pcre3) for its -P option. That library is deprecated in favour of libpcre2-8.so.0 (and its 16-bit equivalent, but I think the 8-bit flavour is the one you'd want); please consider switching to that one.
Note that the API and ABI are not necessarily the same: pcre2 is a separate parallel-installable library, like the difference between GTK+ 2 and GTK+ 3, or Qt 4 and Qt 5. smcv