The tag is present in Lintian version 2.113.26. That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit 43a81d7. For merge requests, please use the latest version in the Lintian check group-checks.
The debug package appear to be containing debug symbols for a "Multi-Arch: same" package, but the debug package itself is not "Multi-Arch: same". If so, it is not possible to have the debug symbols for all architecture variants of the binaries available at the same time.
Making a debug package co-installable with itself is very trivial,
when installing the debug symbols beneath:
dh_strip does this in debhelper compat 9. Otherwise, the expected location of the debug symbols of a given ELF binary can be determined by using:
readelf -n <binary-elf> | \ perl -ne 'print if s,^\s*Build ID:\s*(\S\S)(\S+),/usr/lib/debug/.build-id/$1/$2.debug,'