Hi,
grub-common has recently become a transitional package. Somehow before
that, the grub-common package lost its contents in
/usr/share/doc/grub-common, but that conten is still in the filesystem:
[6/4758]mh@swivel:~ $ ls -al /usr/share/doc/grub-common/
total 416K
drwxr-xr-x 1 root root 184 Nov 4 10:40 ./
drwxr-xr-x 1 root root 108K Nov 21 07:45 ../
-rw-r--r-- 1 root root 669 Jul 18 16:39 AUTHORS
-rw-r--r-- 1 root root 17K Nov 2 12:08 changelog.Debian.gz
-rw-r--r-- 1 root root 336K Jul 18 16:39 changelog.gz
-rw-r--r-- 1 root root 23K Nov 2 12:08 copyright
drwxr-xr-x 1 root root 16 Nov 4 10:40 examples/
-rw-r--r-- 1 root root 242 Nov 2 12:08 NEWS.Debian.gz
-rw-r--r-- 1 root root 9,2K Jul 18 16:39 NEWS.gz
-rw-r--r-- 1 root root 1,1K Jul 18 16:39 README
-rw-r--r-- 1 root root 1,4K Jul 18 16:39 THANKS
-rw-r--r-- 1 root root 318 Jul 18 16:39 TODO
[7/4759]mh@swivel:~ $ dpkg --listfiles grub-common
/.
/usr
/usr/share
/usr/share/bug
/usr/share/bug/grub-common
/usr/share/bug/grub-common/presubj
/usr/share/bug/grub-common/script
/usr/share/doc
/usr/share/doc/grub-common
[8/4760]mh@swivel:~ $
This leaves the docs around even after purging grub-common.
I can see this on four unstable installations. I didn't try a fifth.
Frankly, I do not understand how this could happen, dpkg is supposed to
delete files that were in the installed version of a package and are no
longer in the new version of a package. So this might as well be a dpkg
bug. I am sorry that I don't have enough time these days to investigate
this further.
Greetings
Marc