Hey you two,
thanks for picking this one up after such a long time.

@Michal - while you are right that the particular config file does not have any changes, the reasoning for "Ubuntu currently doesn't make any changes over the Debian" is usually for auto-sync and apache clearly has changes in general (just not in that file). Therefore that is not a problem.

@Sergio - agreed, for an SRU this needs a test case anyway, which means Michal can start in Mantic and testing it through all releases.

@All
While looking at it quickly I found that there are two files with such a config

From upstream we have this for DAV related usage in
apache2-doc: /usr/share/doc/apache2/examples/apache2/extra/httpd-dav.conf

$ cat docs/conf/extra/httpd-dav.conf.in
...
BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
BrowserMatch "MS FrontPage" redirect-carefully
BrowserMatch "^WebDrive" redirect-carefully
BrowserMatch "^WebDAVFS/1.[01234]" redirect-carefully
BrowserMatch "^gnome-vfs/1.0" redirect-carefully
BrowserMatch "^XML Spy" redirect-carefully
BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully
BrowserMatch " Konqueror/4" redirect-carefully

Then the file we got asked here is in
apache2: /etc/apache2/mods-available/setenvif.conf

$ cat /etc/apache2/mods-available/setenvif.conf
BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
BrowserMatch "MS FrontPage" redirect-carefully
BrowserMatch "^WebDrive" redirect-carefully
BrowserMatch "^WebDAVFS/1\.[012]" redirect-carefully
BrowserMatch "^gnome-vfs/1\.0" redirect-carefully
BrowserMatch "^gvfs/1" redirect-carefully
BrowserMatch "^XML Spy" redirect-carefully
BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully
BrowserMatch " Konqueror/4" redirect-carefull

This is already diverging.
The latter is Ubuntu/Debian delta over upstream.


Now those two are out of sync a lot IMHO
1. [1] fixed escaping, but not upstream?
2. gvfs [2] was added in Debian but never upstream AFAICS
3. Konquerer/4 was added upstream [3] and in Debian [4]

Now here in the bug we have the report of
a) Konqueror/5
b) dolphin/
which both are missing.

I conclude from the findings that:

I. All Debian changes [1][2] not yet there should also get upstream [in docs/conf/extra/httpd-dav.conf.in] (that way we also ensure to get their opinion in about the change in general)

II. The suggestions here seem right, that should go upstream to the same file as well

III. Once discussed accepted there we can be sure this does not back-fire, bring it up with Debian [for docs/conf/extra/httpd-dav.conf.in but there also debian/config-dir/mods-available/setenvif.conf]

IV. At the same time you can start to bring it into mantic [for docs/conf/extra/httpd-dav.conf.in but there also debian/config-dir/mods-available/setenvif.conf] and from there SRU

[1]: https://salsa.debian.org/apache-team/apache2/-/commit/6645d3763038a344f7baa6cb7206d52e7a3b1f5f
[2]: https://salsa.debian.org/apache-team/apache2/-/commit/0d38509c2338f0006130d8d41c334c44d5a98b25
[3]: https://github.com/apache/httpd/commit/c4471432a3925208238473189b4b6f981946a722
[4]: https://salsa.debian.org/apache-team/apache2/-/commit/bfa73b18cd795759f647b7f54ff20ad8ea3f1534