If ``DIRECTORY`` is a relative path, all the paths in the ``$CDPATH`` will be tried as prefixes for it, in addition to ``$PWD``. It is recommended to keep ``.`` as the first element of ``$CDPATH``, or ``$PWD`` will be tried last.
Fish will also try to change directory if given a command that looks like a directory (starting with ``.``, ``/`` or ``~``, or ending with ``/``), without explicitly requiring ``cd``.
Fish also ships a wrapper function around the builtin ``cd`` that understands ``cd -`` as changing to the previous directory. See also :ref:`prevd <cmd-prevd>`. This wrapper function maintains a history of the 25 most recently visited directories in the ``$dirprev`` and ``$dirnext`` global variables. If you make those universal variables your ``cd`` history is shared among all fish instances.
As a special case, ``cd .`` is equivalent to ``cd $PWD``, which is useful in cases where a mountpoint has been recycled or a directory has been removed and recreated.
