How can I find my working revision in mercurial

Question

In a mercurial repo I can run hg up {revision} to change the revision of my working directory, but what command can I run to discover what revision I\'m looking at?

Answer 1

In addition to hg parents, you can use hg summary to get the most important summary information about your current state. It looks like this:

% hg summary
parent: 13051:120eccaaa522 tip
 encoding: fix typo in variable name
branch: default
commit: 2 unknown (clean)
update: (current)
mq:     20 unapplied

and tells me at a glance that I'm at revision 13051, that I'm on the default branch with a clean working copy (though there are 2 untracked files). This is the tip revision in my repository, so an update wont do anything. Finally, I have 20 unapplied MQ patches.