mark command does not accept full path on windows #1844
Description
In restore mode, the mark command does not accept a full path including drive letter.
After chaning into the drive letter first, the full path is accepted:
$ mark C:/src/binary/systemtests/tests/restore/tmp/data/build/src/tests/bregtest
No files marked.
$ cd C:
cwd is: C:/
$ mark src/binary/systemtests/tests/restore/tmp/data/build/src/tests/bregtest
1 file marked.
It would make sense to also accept the full path here.