http://mercurial.selenic.com/bts/issue1502

Initialize repository

  $ hg init foo

  $ touch foo/a && hg -R foo commit -A -m "added a"

  adding a

  $ hg clone foo foo1

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo "bar" > foo1/a && hg -R foo1 commit -m "edit a in foo1"

  $ echo "hi" > foo/a && hg -R foo commit -m "edited a foo"

  $ hg -R foo1 pull -u

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files (+1 heads)

  not updating: crosses branches (merge branches or update --check to force update)

  $ hg -R foo1 book branchy

  $ hg -R foo1 book

   * branchy                   1:e3e522925eff

Pull. Bookmark should not jump to new head.

  $ echo "there" >> foo/a && hg -R foo commit -m "edited a again"

  $ hg -R foo1 pull

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  (run 'hg update' to get a working copy)

  $ hg -R foo1 book

   * branchy                   1:e3e522925eff