Briefly looking at the symlink syscall in Linux at http://lxr.linux.no/linux+v2.6.26.5/fs/namei.c#L2447 it appears that the 'Right Thing' is done in that the first path is just passed 'as is' to the VFS layer meaning buggy behaviour can be blamed on the FS driver. This all assumes that GNU's libc doesn't 'sanitise' the input.
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Date: 2008-09-15 16:31 (UTC)