Print Current Mercurial Revision Hash?

Question

Is there a better way extract the current revision hash in Mercurial than

hg log -l1|grep changeset|cut -d: -f3

?

Part of my webapp depl

Answer 1

The most specific non-DEPRECATED command which due to the presence of --template can print only revision information if that conciseness is required (as implied by the question):

hg log -l 1 -b . -T '{rev}:{node|short}\n'

Or for unique long form of hash:

hg log -l 1 -r . -T '{node}\n'

The -b . or branch(.) (dot for branch name) means the current working directory branch and -r . means the current working directory revision, which is documented in hg help revsets and hg help revisions.

Note if there is an uncommitted merge, the . (dot) only displays the first parent of two parents of the working group.