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 a1e47cb. For merge requests, please use the latest version in the Lintian check files/devhelp.
This package contains a *.devhelp or *.devhelp2 file which is not in
the devhelp search path (
/usr/share/gtk-doc/html) and is apparently not in a directory
linked into the devhelp search path. This will prevent devhelp from
finding the documentation.
If the devhelp documentation is installed in a path outside the devhelp
search path (such as
/usr/share/doc), create a symlink in
/usr/share/gtk-doc/html pointing to the documentation directory.