re the working directory revision or the
argument to --rev if given) is printed.

This command is equivalent to::

    hg log -r "p1()+p2()" or
    hg log -r "p1(REV)+p2(REV)" or
    hg log -r "max(::p1() and file(FILE))+max(::p2() and file(FILE))" or
    hg log -r "max(::p1(REV) and file(FILE))+max(::p2(REV) and file(FILE))"

See :hg:`summary` and :hg:`help revsets` for related information.

Returns 0 on success.
rs