log: slowpath: only walk specified revision range during preparation
Even with --removed, it does not make sense to examine changesets outside
of the revision range that was specified by the user: the last phase only
yields a subset of (revs), preparation phase hence only has to examine
(revs) to fill correctly fncache.
%% default queue
patches (active)
%% applied patches in default queue
somestuff
%% try to change patch (create succeeds, switch fails)
abort: patches applied - cannot set new queue active
foo
patches (active)
%% empty default queue
popping somestuff
patch queue now empty
%% switch queue
foo (active)
patches
%% fail creating queue with already existing name
abort: queue "foo" already exists
foo (active)
patches
%% unapplied patches
%% fail switching back
abort: patches applied - cannot set new queue active
%% fail deleting current
abort: cannot delete currently active queue
%% switch back and delete foo
popping otherstuff
patch queue now empty
patches (active)
%% tricky cases
patches
store (active)
popping journal
patch queue now empty
somestuff
%% invalid names
abort: invalid queue name, may not contain the characters ":\/."
abort: invalid queue name, may not contain the characters ":\/."