$ echo "[extensions]" >> $HGRCPATH

  $ echo "mq=" >> $HGRCPATH

  $ hg init

  $ echo qqq>qqq.txt

rollback dry run without rollback information

  $ hg rollback

  no rollback information available

  [1]

add file

  $ hg add

  adding qqq.txt

commit first revision

  $ hg ci -m 1

set bookmark

  $ hg book test

  $ echo www>>qqq.txt

commit second revision

  $ hg ci -m 2

set bookmark

  $ hg book test2

update to -2 (deactivates the active bookmark)

  $ hg update -r -2

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

  (leaving bookmark test2)

  $ echo eee>>qqq.txt

commit new head

  $ hg ci -m 3

  created new head

bookmarks updated?

  $ hg book

     test                      1:25e1ee7a0081

     test2                     1:25e1ee7a0081

strip to revision 1

  $ hg strip 1

  saved backup bundle to $TESTTMP/.hg/strip-backup/*-backup.hg (glob)

list bookmarks

  $ hg book

     test                      0:5c9ad3787638

     test2                     0:5c9ad3787638

immediate rollback and reentrancy issue

  $ echo "mq=!" >> $HGRCPATH

  $ hg init repo

  $ cd repo

  $ echo a > a

  $ hg ci -Am adda

  adding a

  $ echo b > b

  $ hg ci -Am addb

  adding b

  $ hg bookmarks markb

  $ hg rollback

  repository tip rolled back to revision 0 (undo commit)

  working directory now based on revision 0

are you there?

  $ hg bookmarks

  no bookmarks set

can we commit? (issue2692)

  $ echo c > c

  $ hg ci -Am rockon

  adding c

can you be added again?

  $ hg bookmarks markb

  $ hg bookmarks

   * markb                     1:fdb34407462c

rollback dry run with rollback information

  $ hg rollback -n

  repository tip rolled back to revision 0 (undo commit)

  $ hg bookmarks

   * markb                     1:fdb34407462c

rollback dry run with rollback information and no commit undo

  $ rm .hg/store/undo

  $ hg rollback -n

  no rollback information available

  [1]

  $ hg bookmarks

   * markb                     1:fdb34407462c

  $ cd ..